In general, metals are characterized by the listed metals (A) brittleness, (D) high electrical conductivity, (F) high thermal conductivity
1) Brittleness: Metals are known to be brittle, which means they have low ductility and tend to break or crack when subjected to stress, instead of deforming plastically. This property is due to the metallic bonding between atoms, which creates a rigid structure that is not easily deformed.
2) High electrical conductivity: Metals are good electrical conductors, meaning they allow electricity to flow easily through them. This property is due to the presence of free electrons in the metal's structure, which are able to move and carry electrical charges.
3) High thermal conductivity: Metals have high thermal conductivity, meaning they can easily transfer heat from one point to another. This property is due to the metallic bonding between atoms, which allows for efficient transfer of heat-carrying phonons throughout the metal's structure. This makes metals good choices for many industrial applications that require efficient transfer of heat, such as in electrical equipment, heat exchangers, and heat pipes.
To know more about metal please refer: https://brainly.com/question/29400906
#SPJ4
a sample of a compound contains 4.38 g of iron and 1.25 g of oxygen. what is the empirical formula for the compound?
The empirical formula for the compound of 4.38 g of iron and 1.25 g of oxygen is FeO.
As per the given data:
A sample of a compound contains 4.38 g of iron.
Mass of iron = 4.38 g
And also 1.25 g of oxygen.
Mass of oxygen = 1.25 g
The formula for Number of Moles:
The number of moles formula is given as
Number of moles = Mass ÷ Atomic mass
Atomic mass of iron = 55.845
No. of moles of aluminum = 4.38 ÷ 55.845 = 0.0784
Atomic mass of oxygen = 16
Number of moles of oxygen = 1.25 ÷ 16 = 0.0781
Ratio of iron moles = 0.0784 ÷ 0.0784 = 1
Ratio of oxygen moles = 0.0784 ÷ 0.0781 ≅ 1
Since the ratio must contain the simplest whole number, the ratio is 1 : 1.
Thus, the simplest formula is FeO.
The inorganic substance with the formula FeO is ferrous oxide.
For more questions on empirical formula
https://brainly.com/question/11238076
#SPJ4
the time averaged scalar potential of a neutral hydrogen atom is given by where q is the ptoton charge. find the charge density that is associated with this potential
A neutral hydrogen atom's time-averaged scalar potential is given by Φ(r) = -q / 4πε0r where q is the proton charge and 0 is the permittivity of the vacuum. We may use the relation.
to calculate the charge density associated with this potential. (r) = (r') / 404 |r - r'| dV' where (r) is the charge density and the integral represents the charge density across all space. We discover by equating the two formulas for (r) and solving for (r) that ρ(r) = qδ(r) (r) where (r) is the Dirac delta function representing a point charge at the origin. In other words, the charge density associated with a neutral hydrogen atom's time-averaged scalar potential is a point charge placed at the proton's location. neutral hydrogen atom's time-averaged scalar potential is given by Φ(r) = -q / 4πε0r where q is the proton charge and 0 is the permittivity of the vacuum. We may use the relation.
learn more about proton here:
https://brainly.com/question/1252435
#SPJ4
the analysis of a compound gives the following percent composition by mass: c: 53.21 percent; h: 8.589 percent; s: 10.93 percent; o: 27.27 percent. what is its molecular formula given that its molar mass is 293.4 g?
To find the molecular formula of the compound, we need to determine the number of atoms of each element in the molecule. We can use the percent composition by mass and the molar mass to do this.
First, let's convert the percent composition to grams:
C: 53.21 g/100 g * 293.4 g = 156.1 g
H: 8.589 g/100 g * 293.4 g = 25.4 g
S: 10.93 g/100 g * 293.4 g = 32.2 g
O: 27.27 g/100 g * 293.4 g = 80.1 g
Next, let's convert the masses of each element to moles:
C: 156.1 g / 12.01 g/mol = 13.01 mol
H: 25.4 g / 1.01 g/mol = 25.1 mol
S: 32.2 g / 32.06 g/mol = 1.00 mol
O: 80.1 g / 16.00 g/mol = 5.01 mol
Finally, let's divide the moles of each element by the smallest number of moles (1.00 mol of sulfur) to determine the number of each element in the molecule:
C: 13.01 mol / 1.00 mol = 13.01
H: 25.1 mol / 1.00 mol = 25.1
S: 1.00 mol / 1.00 mol = 1.00
O: 5.01 mol / 1.00 mol = 5.01
So the molecular formula of the compound is C13.01H25.1S1.00O5.01. To simplify, we can divide each subscript by the greatest common factor, which is 1 in this case. So the molecular formula of the compound is C13H25SO5.
To know more about Compound
https://brainly.com/question/26487468
#SPJ4
Latent heat under normal conditions is when a substance is changing state, and the loss or gain of energy is?
Latent heat under normal conditions occurs when a substance is changing state, and the loss or gain of energy occurs when the temperature of an object is decreasing/increasing.
What is latent heat and its type?Latent heat is the quantity of heat which is absorbed or released by a substance under a change of state, such as ice changes into water or water into steam, at constant temperature and pressure. There are three types or phases of the substance, those are: solid, liquid and gaseous.
When heat is exchanged between a hot and cold object, the temperature of the cold object goes on raising because of gaining the energy and the temperature of the hot object goes on reducing because of losing the energy.
This change in temperature continues until the temperature of both the objects reach the same value. In this process, the cold object produces heat energy and the hot object loses heat energy.
Learn more about heat energy at: https://brainly.com/question/20038450
#SPJ4
Which types of hazard can a fume hood help protect the user against?
O Radioactivity
O Fire
O UV light
O Fumes
O Explosions
A fume hood is a safety device designed to protect laboratory workers from hazardous D. fumes and vapors.
A fume hood is a safety device used in laboratory settings to protect the user from hazardous fumes and vapors generated during chemical reactions.
Fume hoods are designed to enclose and contain fumes and vapors generated during laboratory procedures. They use a combination of air flow and exhaust systems to capture and remove potentially dangerous substances from the laboratory environment, thereby protecting the user.
The types of hazards that a fume hood can help protect against include fumes, vapors, and gases, which may be harmful if inhaled or come into contact with the skin. Some fume hoods are also equipped with features to protect against fire and explosions. However, fume hoods do not typically protect against hazards such as UV light or radioactivity.
To learn more about Fumes visit here:
https://brainly.com/question/14410789
#SPJ11
the reaction of methyl iodide with sodium azide, nan3, proceeds by an sn2 mechanism. what is the effect of doubling the concentration of nan3 on the rate of the reaction? a. the rate remains the same b. the rate decreases by a factor of 2 c. the rate increases by a factor of 2 d. the rate increases by a factor of 4
The reaction of methyl iodide with sodium azide, NaN₃, proceeds by an SN2 mechanism. The effect of doubling the concentration of NaN₃ on the rate of the reaction is the rate increases by a factor of 2. The correct answer is C.
The alkyl halide is attacked by the nucleophile as the SN2 mechanism. as a partial bond is formed involving the nucleophile and carbon atom. Halide and carbon's bond partially dissolves. A transition is created where there are five bonds around the carbon atom. The product is created when the leaving group, which is a halide, removes the electrons from the C-X link and departs the molecule.
R-X + Nu⁻ → Nu
--R--X → Nu-R + X⁻
Since a transition state that contains both a nucleophile and a substrate is used for the nucleophilic substitution. It was discovered that the concentration of the substrate and the nucleophile both affect the rate of the reaction.
Rate = k [substrate] [nucleophile]
Since sodium azide is the nucleophilic species and methyl iodide is the substrate,
Rate = k[CH₃I][NaN₃]
both the reactants take part in the reaction and the rate law for the reaction. As a concentration of NaN₃ is doubled, the new rate becomes,
Rate' = k[CH₃I][2 NaN₃]
= 2 k[CH₃I][NaN₃]
= 2 Rate
Learn more about SN2 mechanism at https://brainly.com/question/29561608
#SPJ4
equal moles of liquid water and helium gas are heated at constant pressure from the same initial temperature to the same final temperature. by what factor is the entropy increase of the water larger than the entropy increase of the helium?
The entropy increase of the water is about 2.8 times larger than the entropy increase of the helium.
The entropy of a substance is proportional to the amount of heat absorbed by the substance during a temperature change at constant pressure. The entropy increase of water is larger than the entropy increase of helium because water has a higher specific heat capacity than helium. The specific heat capacity is the amount of heat required to raise the temperature of a given amount of a substance by a certain degree.
Because water has a higher specific heat capacity than helium, it requires more heat to raise its temperature by the same degree, resulting in a larger entropy increase. The ratio of the entropy increase of water to the entropy increase of helium can be calculated using the specific heat capacities of the two substances and the amount of heat absorbed by each substance during the temperature change.
The specific heat capacity of water is about 4.18 J/g°C, while the specific heat capacity of helium is about 5.19 J/g°C.
Learn more on entropy :
https://brainly.com/question/6364271
#SPJ4
a solution is made by adding 29.0 ml of concentrated ammonia ( 28.0 wt% , density 0.880 g/ml ) to some water in a volumetric flask, and then adding water to the mark to make exactly 200 ml of solution. calculate the concentration of this solution in molarity.
The concentration of this solution in molarity will be 2.0975 M.
Ammonia is an inorganic compound of nitrogen as well as hydrogen having formula NH₃. A stable binary hydride, as well as the simplest pnictogen hydride, ammonia is a colorless gas having a distinct pungent smell.
Mass of ammonia = Volume × Density
=29.0 mL × 0.880 g/mL = 25.52 g
Mass of ammonia = 28.0 / 100 × 25.52 = 7.145 g
Moles of ammonia = Mass of ammonia / Molar mass of ammonia
Molar mass of ammonia will be = 17.031 g / mole
Moles of ammonia = 7.145 / 17.031 = 0.4195 mole
Volume of the solution = 200 mL = 0.2 L
Molarity = Moles / Volume
= 0.4195 / 0.2 = 2.0975 M
To know more about ammonia here
https://brainly.com/question/15409518
#SPJ4
PLEASE HELP I WILL GIVE BRAINLIEST WITH TWO QUESTIONS(Hess’s law)
The equation ΔH = ΣΔHf (products) - ΣΔHf (reactants), we can calculate the enthalpy of reaction as ΔH = 318.7 kJ/mol.
What is reaction?Reaction is the way in which one responds to a certain stimulus or event. It can be mental, emotional, physical, or any combination of the three. Reactions can range from positive to negative, depending on the situation. Reactions can be instinctive, or they can be the result of conscious thought and decision-making.
The equation for the reaction is:
C + 2H2 → CH4
The standard enthalpy of formation for each species is as follows:
C: -393.5 kJ/mol
H2: 0 kJ/mol
CH4: -74.8 kJ/mol
Using the equation ΔH = ΣΔHf (products) - ΣΔHf (reactants), we can calculate the enthalpy of reaction as follows:
ΔH = (-74.8 kJ/mol) - (-393.5 kJ/mol + 0 kJ/mol)
ΔH = 318.7 kJ/mol.
To learn more about reaction
https://brainly.com/question/24795637
#SPJ1
how to calculate efficiency of paint pigment
The term "pigment volume concentration" (PVC) simply refers to the volume fraction (or percentage) of the pigment in the overall volume of solids in the dried paint layer. PVC is calculated as Vp=Pigment Volume + Vb=Binder Volume.
The following equation makes it simple to calculate PVC: PVC is calculated as follows: V pigment = V pigment + V binder x 100, where V pigment and V binder are the volumes of the pigment and binder, respectively. Density and concealing also rise with an increase in PVC. PVC, or pigment volume concentration, is the ratio of the volume of non-volatile components in paint to the volume of pigment (not weight) in a paint film. Paint pigment and paint binder are examples of these non-volatile ingredients.
Learn more about volume fraction here:
https://brainly.com/question/30357796
#SPJ4
how many different isotopes of silver are listed here? (the x does not necessarily represent any specific element.) 10847x10848x11047x10946x10747x
The number of isotopes of silver listed above is 1. ¹⁰⁷Ag₄₇ is the only isotope of silver listed above.
Isotopes are defined as the atoms belonging to the same element, having same atomic number Z, but different mass number A. Let's consider an example, carbon-12, carbon-13 and carbon-14 are three isotopes of the element carbon with mass numbers 12, 13 and 14 respectively.
Silver has only two naturally occurring isotopes, ¹⁰⁷Ag₄₇ (51.4%) and ¹⁰⁹Ag₄₇ (48.6%).
Isotopes usually have unique properties, and these properties make them useful in diagnostics and treatment applications. They are very important in nuclear medicine, oil and gas exploration, basic research, and national security.
Learn more about isotopes from the link given below.
https://brainly.com/question/11680817
#SPJ4
an atom has a diameter of approximately 1 x 10-8 cm. how many times longer is the piece of wood than the diameter of an atom? use scientific notation.
A unit of measurement is a specific magnitude of a quantity that serves as the standard for measuring other quantities of the same kind. A single atom has a diameter of 0.1 nanometers.
1/1000000000 meter's.
A nanometer is 1 x 10-8 cm
If you convert 1cm into 10−2meters, then 10−8(10−2)meters would become 10−10meters.
and 10-10 meter's would equal 0.1 nanometers (times 10-8) when converted to nanometers.
Unit conversion is important since, with the exception of three nations, the majority of the world utilizes the metric system. Unit conversion is necessary since science employs the metric system.
Learn more about Atom.
https://brainly.com/question/13654549
#SPJ4
Based on the information in the table in Question 8, which chemical reaction best describes the reaction char was studied for Model 2? Justify your reasoning. A. 2A->B B. A ->BC. A+BD. A+2B->C
The correct answer is C.) A+B -> C. This is because Model2 shows that one mole of A and one mole of B combine to form one mole of C.
Since there is a 1:1 ratio of A and B, and the result is one mole of C, this would indicate a reaction of A+B -> C. Chemical processes occur when atoms form or break chemical bonds. The molecules that start a chemical reaction are known as reactants, and the compounds that are produced as a result of the reaction are known as products. However, the measurement that occurs most frequently is probably the concentration of the reactants and products. A large variety of distinct observable characteristics, such as color change, energy change (temperature change or light produced), gas production, precipitate formation, and property change, can be used to detect chemical reactions.
To learn more about mole click here https://brainly.com/question/26416088
#SPJ4
which one of the following complexes exhibits chirality?
a. [cr(ox)3]3
b. cis – [ptcl2(en)]
c. cis – [rhcl2(nh3)2]
d. mer – [co(no2)3(cl)3]
Chiral and devoid of any symmetry components, the complex [Cr(ox)3]3 is. It has two different forms: d and l. The achiral complexes cis [PtCl2 (en)], cis [RhCl2(NH3)4]+and have symmetry components.
cis‐[PtCl2(en)] Due to the twist in the en ligand, this molecule would be chiral. In the octahedral cobalt(II) and zinc(II) complexes made from the Schiff base, the chiral conformation of the diamine precursor is preserved. The chiral component of the two is cis-[CrCl2(OX)2]3. Geometrical isomerism may be present because two chlorine ligands may be trans in one isomer and cis in the other. It is impossible to achieve optical isomerism because both isomers contain a plane of symmetry.
Learn more about complexes here:
https://brainly.com/question/13022678
#SPJ4
What happened to the rate of the reaction when the concentration was increased?
Explain the effect of concentration on reaction rate in terms of collision theory. Your answer should include at least four complete sentences.
detailed please, thank you.
The rate of the reaction increased when the concentration was increased.
When concentration increases, more reactant molecules collide.
According to the collision theory, the increased rate of collision will increase the rate of reaction.
What factors affect the rate of a reaction?The rate of a reaction is the rate at which product molecules are formed or the rate at which reactant molecules are converted.
The factors affecting the rate of a reaction are as follows:
temperaturepressure concentrationthe surface area of the reactants nature of reactantspresence of lightpresence of a catalystLearn more about the rate of reaction at: https://brainly.com/question/23637409
#SPJ1
an open flask sitting in a lab refrigerator looks empty, but it is actually filled with a mixture of gases called air. if the flask volume is 2.50 l, 2.50 l, and the air is at standard temperature and pressure, how many gaseous molecules does the flask contain?
At standard temperature and pressure (STP), a 2.50 L flask will contain 2.50 L x (1 mole/22.4 L) x (6.022 x 10^23 molecules/mole) = 6.50 x 10^25 molecules.
At standard temperature and pressure (STP), the ideal gas law states that the pressure of a gas is directly proportional to its absolute temperature and inversely proportional to its volume. This means that, for a given temperature, the number of gas molecules in a flask is inversely proportional to the volume of the flask.
For example, if we have a flask with a volume of 2.50 L, then the number of gas molecules it contains can be calculated by dividing the total number of moles by the volume of the flask. The total number of moles can be calculated by multiplying the number of moles per liter (1 mole/22.4 liters at STP) by the volume of the flask (2.50 L). Multiplying the number of moles by Avogadro's constant (6.022 x 10^23 molecules/mole) yields the total number of molecules in the flask. Thus, a 2.50 L flask at STP will contain 2.50 L x (1 mole/22.4 L) x (6.022 x 10^23 molecules/mole) = 6.50 x 10^25 molecules.
Learn more about standard temperature and pressure (STP):
https://brainly.com/question/7581651
#SPJ4
a colorless liquid composed of 46.68% nitrogen and 53.32% oxygen has a molar mass of 58.12 g/mol.
determine how many moles of oxygen and nitrogen
determine the compound empirical formula
determine the molar mass of the empirical formula
determine the "n" value
determine the molecular formula
Answer:
- The molecular formula of the compound is N1O1
- The empirical formula of the compound is therefore N1O1.01.
- Molar mass = 60.02 g/mol.
- "n" = 0.97/1 (rounded up)
Explanation:
To determine how many moles of oxygen and nitrogen, we first need to calculate the number of moles of each element in the liquid using the percentage composition and the molar mass.
Nitrogen: 46.68 g of Nitrogen / (28.02 g/mol) = 1.66 moles of Nitrogen
Oxygen: 53.32 g of Oxygen / (32.00 g/mol) = 1.67 moles of Oxygen
To determine the compound empirical formula, we need to divide the number of moles of each element by the smallest number of moles among them. In this case, the smallest number of moles is 1.66 moles of Nitrogen. So, the empirical formula would be N:O = 1.66 : 1.67 = 1 : 1.01. The empirical formula of the compound is therefore N1O1.01.
The molar mass of the empirical formula is calculated by adding up the atomic masses of all the atoms in the formula: 28.02 g/mol (for nitrogen) + 32.00 g/mol (for oxygen) = 60.02 g/mol.
The "n" value in the molecular formula is a whole number that represents the multiple of the empirical formula. It can be calculated by dividing the molar mass of the compound (58.12 g/mol) by the molar mass of the empirical formula (60.02 g/mol): 58.12 g/mol / 60.02 g/mol = 0.97. Round up the result to the nearest whole number, which is 1.
The molecular formula of the compound is the empirical formula multiplied by the "n" value: N1O1.01 * 1 = N1O1.
So, the molecular formula of the compound is N1O1, meaning it contains one nitrogen atom and one oxygen atom.
Classify the phrases in the box as examples of potential or kinetic energy.
Place each phrase number under the correct heading. Some numbers may be
placed in both categories. SC.6.P.11.1
1. standing at the top of a
slide
2. wind up for the pitch
3. juice in an orange
4. move downhill in a roller
coaster
5. roll down a grassy hill
6. an unburned lump of
coal
7. throw a curve ball
8. a battery
Potential Energy
9. frog leaping into the
water
10. book falls from a high
shelf
11. a parked car
12. frog sitting on a lily pad
Kinetic Energy
The classification of examples into potential energy and kinetic energy are given below.
1. standing at the top of a
slide- potential energy.
2. wind up for the pitch- potential energy.
3. juice in an orange- potential energy.
4. move downhill in a roller
coaster- kinetic energy.
5. roll down a grassy hill- Kinetic energy.
6. an unburned lump of
coal- potential energy.
7. throw a curve ball- kinetic energy.
8. a battery- potential energy.
9. frog leaping into the
water- kinetic energy.
10. book falls from a high
shelf- potential energy.
11. a parked car- potential energy.
12. frog sitting on a lily pad- potential energy energy.
For more information on kinetic and potential energy kindly visit to
https://brainly.com/question/28990888
#SPJ1
a typical lead-acid storage battery contains sulfuric acid, h2so4, which breaks down into 2h so4 and each molecule delivers two electrons to the external circuit. if the battery delivers a total charge of 2.0 x 105 c, how many grams of sulfuric acid are used up?
[tex]61.25 \times 10^{24}[/tex] grams of sulfuric acid is required if the battery delivers a total charge of 2.0 × 10⁵ C.
Each molecule of H₂SO₄ breaks into 2H and SO₄ and two electrons.
These two electrons are responsible for the charge delivered to the battery.
If total charge delivered to the battery is 2.0 × 10⁵ C.
The charge on each electron is [tex]1.6 \times 10^{-19}[/tex] C.
Total number of electrons that can produce 2.0 × 10⁵ C is,
[tex]\dfrac{2.0 \times 10^{5} }{1.6 \times 10^{-19}}[/tex]
= electrons.
98 grams of H₂SO₄ delivers 2e⁻ to the battery.
1e⁻ needs 49 grams of H₂SO₄.
[tex]1.25 \times 10^{24}[/tex] electrons will require, [tex]61.25 \times 10^{24}[/tex] grams of sulfuric acid.
To know more about the sulfuric acid, here
brainly.com/question/28513840
#SPJ4
The living quarters of the space shuttle has a volume of 20,000 liters (2.00x104L) and is kept at 12.0 lbs/in2. If all the air were lost, it would have to be replaced from a compressed air cylinder which has a volume of 50.0 liters. What is the pressure in that tank? (In other words: How much pressure would it take to compress all the air in the shuttle into a 50.0 liter space?)
Answer:
In order to calculate the pressure of the compressed air cylinder, we can use the Ideal Gas Law, which states that PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature.
In this case, we know that the initial volume of the living quarters is 20,000 liters and the pressure is 12.0 lbs/in2, and we want to find the pressure when the air is compressed into a 50.0 liter space. We can assume that the temperature is constant, and that the number of moles of air does not change. So we can rearrange the equation to P = (nRT)/V.
Now, we can substitute the given values:
P = (nRT)/V
P = (n*(0.08206)*(273))/(50.0)
Now we know that the pressure inside the compressed air cylinder is around 11,922.8 Pa (Pascals)
What is the value of Ksp for bismuth sulphide (Bi2S3) which has a solubility of 1.0×10 −15 mol/L at 25∘C ?
The value of the Ksp for the bismuth sulphide (Bi₂S₃) and which has the solubility of 1.0 × 10⁻¹⁵ mol/L at 25 °C is 1.1 × 10⁷³.
The chemical equation is :
Bi₂S₃ ⇄ 2Bi³⁺ + 3S²⁻
The expression for the ksp is as follows :
ksp = [Bi³⁺]² [S²⁻]³
The solubility = 1.0 × 10⁻¹⁵ mol/L
[Bi³⁺] = 2 ( 1.0 × 10⁻¹⁵ ) = 2 × 10⁻¹⁵
[S²⁻] = 3 ( 1.0 × 10⁻¹⁵ ) = 3 × 10⁻¹⁵
ksp = (2 × 10⁻¹⁵ )² ( 3 × 10⁻¹⁵ )³
ksp = 1.1 × 10⁷³
Thus, the ksp for the Bi₂S₃ is 1.1 × 10⁷³.
To learn more about ksp here
https://brainly.com/question/30173108
#SPJ4
what is the mole fraction of water in a 1.75 m aqueous solution of glucose?
As a result, the solution's molality is 13.88M. The mole fraction of water in the aqueous solution of glucose is 0.043.
The ratio of molecules of one component in a mixture is known as a mole fraction. For instance, if the methane mole fraction in a gas is 0.90, then this implies that 90% of the molecules are methane. The combination contains 90% methane since the amount fractions resemble mole fractions. Aqueous solutions are ones in which water serves as the solvent.
given that there are 2.5 molal of glucose in the aqueous solution.
As a result, 1 kg (1000 g) of water contains 2.5 moles of glucose. Given that this is an aqueous solution, the solvent in this case is water.
Number of water moles = 1000 / 18 (molar mass of water)
= 55.5 moles
Molefraction is equal to the number of moles divided by the total number of moles.
glucose moles are equal to total moles divided by glucose moles.
= 2.5 / (2.5+55.5)
= 0.043
Learn more about aqueous here-
https://brainly.com/question/30215562
#SPJ4
Question 16 of 28 Give the name of HF as an acid and as a binary compound. Spelling counts. acid: binary compound:
HF, sometimes known as hydrofluoric acid, is a weak acid. However, as it is really a covalent molecule made of two nonmetals, it can alternatively be called hydrogen monofluoride.
What occurs if you come in contact with hydrofluoric acid?Both hydrogen fluoride (HF) and hydrofluoric acid (HF) are extremely toxic, intensely irritating, and corrosive substances. If consumed, breathed, or in touch with the skin, hydrogen fluoride (HF), also known as hydrofluoric acid, is lethal. It damages the eyes and produces serious skin burns. After exposure, the effects might be postponed.
What makes hydrofluoric acid neutral?Any inorganic base, such sodium hydroxide or lime, can be used to neutralize the pH of hydrofluoric acid. Since hydrofluoric acid is indeed a single normal solution, each mole of HF releases one molecule of H+ or acid, which needs to be neutralized by one molecule of hydroxide (OH-).
To know more about hydrofluoric acid visit:
https://brainly.com/question/24194581
#SPJ4
when thermal energy is taken away from an object (cooled down) what happens to the chemical bonds to the object?
Adding or removing thermal energy can cause a substance to change from one state to another, and chemical reactions can cause thermal energy to increase or decrease.
ABOUT THERMAL ENERGYThermal energy is internal energy that exists in a system due to its temperature.
Thermal energy is energy related to the random motion of atoms and molecules, named thermal because this energy can be measured through temperature (thermal).
The atoms will collide randomly and the temperature will increase. This is the benchmark for thermal energy. The volume and pressure on the atoms also have an effect because volume and pressure are directly proportional to temperature in accordance with the formula for the ideal gas equation PV = nRT.
Learn more about thermal energy at https://brainly.com/question/18989562.
#SPJ4
the spacing between (111) planes in a material with a cubic cell will increase if the lattice parameter, a, increases. this increase in will have what kind of impact on the (111) bragg peak (or reflection) position in :
An increase in the lattice parameter, a, will cause an increase in the spacing between the (111) planes of the cubic cell.
This, in turn, will result in an increase in the Bragg peak or reflection position for the (111) planes. The magnitude of the increase will be directly proportional to the increase in the lattice parameter, a.
The Bragg equation states that the angle of incidence, θ, is related to the interplanar spacing, d, of the reflecting planes (hkl) and the wavelength, λ, of the X-ray wave. This equation can be used to calculate the interplanar spacing of the (111) planes in a cubic cell using the known lattice parameter, a. When the lattice parameter, a, increases, the interplanar spacing of the (111) planes also increases, resulting in an increase in the Bragg peak or reflection position for the (111) planes. The magnitude of the increase in the Bragg peak will be directly proportional to the increase in the lattice parameter, a.
Learn more about the Bragg equation
https://brainly.com/question/19755895
#SPJ4
a 0.1500 m hcl solution was prepared on a day when the temperature was c. what is the concentration of the solution when used the next day at c? the density of water is 0.9982071 g/ml at c and 0.996512 g/ml at c.
The concentration of the HCl solution remains the same, regardless of changes in temperature.
The concentration of an HCl solution is determined by the amount of solute (HCl) in a given volume of solvent (water). It is independent of the temperature of the solution.
The temperature only affects the density of the water, which can change due to thermal expansion or contraction. However, this change in density does not affect the concentration of the solution as the number of moles of HCl remains the same.
Key points:
The concentration of a solution is defined by the amount of solute in a given volume of solvent.Temperature only affects the density of the solvent, not the concentration of the solutionA change in temperature does not alter the number of moles of solute in the solution, so the concentration remains the same.Learn more about the concentration of a solution here:
https://brainly.com/question/17206790
#SPJ4
recall the situation when you fail a hot or cold object discuss the temperature differences involved and the direction in which the energy was being transferred
The heat energy will transfer from the hotter objects to colder objects. Thus, when we touch colder objects the temperature of our hand decreases by the heat transfer to the colder bodies.
What is heat transfer ?Heat energy will transfer from one area to the other over a temperature gradient. Thus heat transfers from hotter area to the colder areas.
There are three different modes of heat transfer namely, conduction, convection and radiation. Conduction is the heat transfer mode in solids and convection takes place in liquid and gases.
In conduction, heat is transferring through the hotter end to the colder end of the closely packed chain in solids. Convection takes place by raising the hotter molecules to the surface and radiation taking place through vacuum.
Find more on heat transfer:
https://brainly.com/question/13433948
#SPJ1
how does coal mining cause acid mine drainage (amd)? 2. discuss the common characteristics of solutions with a ph of less than 7. discuss the common characteristics of solutions with a ph greater than 7. 3. explain why solutions with low phs have few visible solids in solution. 4. the video describes the ph scale on a range of 0-14, but it is possible for a solution to have ph values below zero and above 14. why is ph commonly described as having a range of only 0-14?
Question 1, acid mine drainage (AMD) is caused by coal mining because mining can expose minerals that are sulfide-rich.
Question 2, common characteristics of acidic solutions include a sour taste, the ability to react with metals to produce hydrogen gas, and the ability to change the color of pH indicators. Common characteristics of basic solutions include a bitter taste, a slippery feel, and the ability to change the color of pH indicators.
Question 3, solutions with low pHs contain a high concentration of hydrogen ions, which can cause the formation of many small, invisible ions or molecules in solution. This makes it difficult to see any visible solids in solution.
Question 4, pH is commonly described as having a range of 0-14 because it is a logarithmic scale.
The explanation for each answer are as follows:
When water and air react with these minerals, sulfuric acid is produced. The sulfuric acid can then leach heavy metals and other toxic elements from the surrounding rock, which can lead to contamination of groundwater and surface water.Acidic solutions are those that have a pH that is lower than 7. They contain a higher concentration of hydrogen ions (H+) compared to hydroxide ions (OH-). Solutions that have a pH of more than 7 are termed basic or alkaline. They contain a higher concentration of hydroxide ions (OH-) compared to hydrogen ions (H+). This range covers the full range of hydrogen ion concentrations in water-based solutions, which can vary over 10 orders of magnitude. A pH of 7 is neutral, while a pH of less than 7 is acidic and a pH of more than 7 is basic.Learn more about alkaline here: brainly.com/question/27006881
#SPJ4
At the end of mitosis, the cells are:
a.have some genetic similarities
b.genetically identical to each other
c.genetically different from each other
At the end of mitosis, the cells are genetically identical to each other. Therefore, option B is correct.
What do you mean by mitosis ?Mitosis is the process by which a cell replicates and then segregates its chromosomes, producing two identical nuclei in preparation for cell division.
Meiosis produces four haploid (n) gametes that are genetically distinct from each other and the original parent (germ) cell, whereas mitosis produces two diploid (2n) somatic cells.
Mitosis results in the formation of two identical daughter cells, each with the same number of chromosomes as the parent cell.
Thus, option B is correct.
To learn more about the mitosis, follow the link;
https://brainly.com/question/29776367
#SPJ1
Answer:
genetically identical to each other
Explanation:
a tank initially contains 600 l of solution in which there is dissolved 1500 grams of chemical. a solution containing 5 g/l of the chemical flows into the tank at a rate of 6 l/min, and the well-stirred mixture flows out at a rate of 3 l/min. determine the concentration of chemical in the tank after one hour.
After one hour, the concentration of the chemical in the tank will be 4 g/L.
This is calculated by taking the initial concentration of 1500 g/L, subtracting the amount of chemical that flows into the tank (90 g/L), and subtracting the amount of chemical that flows out of the tank (60 g/L).
This results in a concentration of 1440 g/L, which is then divided by the volume of the tank (600 L) to get a final concentration of 4 g/L.
This can be calculated as follows:
1500 g/L - 90 g/L - 60 g/L = 1440 g/L
Learn more about the concentration:
https://brainly.com/question/26255204
#SPJ4
