Answers
When chlorine react in ionic form, it gain one electron as its electronegativity is very high. chlorine form mostly ionic compound.
What is ion?An atom or molecule is said to be an ion if a number of its electron pairs have been acquired or lost, giving it a net negative or positive electrical charge.
In other terms, a chemical species has an unbalanced ratio of proton (positively charged particles) to electrons (negatively charged particles). When chlorine react in ionic form, it gain one electron as its electronegativity is very high. chlorine form mostly ionic compound.
Therefore, when chlorine react in ionic form, it gain one electron as its electronegativity is very high.
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Related Questions
The head of a golf club might contain 250 grams of titanium. How many atoms are present in this? (Show work please)
Answers
Answer:15.22
Explanation:
Animals inherit behaviors from their parents. describe an example of an inherited behavior of a bird ?
Answers
Answer:
Process of migration.
Explanation:
One example of an inherited behavior in birds is the process of migration. Many bird species have the innate ability to navigate long distances to migrate to warmer climates during the winter months. This behavior is passed down genetically from parents to their offspring, and young birds are able to migrate successfully without prior experience or training. This behavior is thought to be controlled by a combination of genetic and environmental cues, such as changes in daylight and temperature. Examples of migratory bird species include the Arctic Tern, which flies from the Arctic to the Antarctic each year, and the Monarch Butterfly, which migrates to Mexico for the winter.
4. CF₂0
Lewis Structure:
Number of electron groups on central atom:
Number of lone pairs on the central atom:
Electron Geometry:
Shape:
Answers
CF2Cl2 (Carbon difluoride) has the following Lewis structure:
F
/ \
C = Cl - Cl
\ /
F
1. Number of electron groups on the central atom (Carbon, C): 4 (2 single bonds to Fluorine and 2 double bonds to Chlorine), 2. Number of lone pairs on the central atom (Carbon, C): 0, 3. Electron geometry: tetrahedral, 4. Shape: bent or angular.
What is CF2Cl2 Lewis Structure?A central carbon atom is joined to two fluorine and two chlorine atoms to form the chemical compound CF2Cl2. We can depict this molecule's bonding using its Lewis structure, which displays the location of its electrons.
1. The actions listed below must be taken in order to ascertain the Lewis structure of CF2Cl2:
Calculate the molecule's valence electron count. The number of valence electrons for each element in the molecule can be added to achieve this. With 4 valence electrons for carbon, 7 for fluorine, and 7 for chlorine, a total of 25 valence electrons are present.
2. Position the atoms in the molecule so that the other atoms are positioned around the core atom (carbon, C). In this case, we have C surrounded by 2 F and 2 Cl atoms.
3. Where double bonds are required, connect the core atom to the outside atoms using single bonds. Since a double bond consists of two pairs of electrons, the chlorine atoms form double bonds with the central carbon atom since they each have seven valence electrons. Since a single bond consists of one pair of electrons and the fluorine atoms each have seven valence electrons, they can only form single bonds with the center carbon atom.
4. Assign the remaining electrons in lone pairs to the center atom. Since all 25 valence electrons in this situation have been spent in bonding, there are no more electrons to designate as lone pairs.
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The energy E of the electron in a hydrogen atom can be calculated from the Bohr formula: E= Ry In this equation Ry stands for the Rydberg energy, and n stands for the principal quantum number of the orbital that holds the electron. (You can find the value of the Rydberg energy using the Data button on the ALEKS toolbar) Calculate the wavelength of the line in the absorption line spectrum of hydrogen caused by the transition of the electron from an orbital with n=1to an orbital with n =7. Round your answer to 3 significant digits.
Ry=2.17987x10^-18 J
Answers
Answer: So to solve, for this we're going to use the equation 1 over the wave length is equivalent to reitberg's constant multiplied by 1, over n, lower energy level square that and then 1 over n h, higher energy level and then square that also so plugging the information That we have our is rydberg's constant, 1.097 times 10 to the 7 per meter. Then lower energy level is 7 square and then the higher energy level is 12 square, also calculating this we'll get 147696.995. This is me, then. We still have here 1 over the wave. Blank so we'll take the inverse of outside of the equation to solve, for the wave length will get 6.7 times centene 6. This is the mess there's no specific unit. In our final answer, there's no required specific unit, so i will leave our final answer in terms of me. That'S it done.
Explanation: Research im middle schooler :)
Please answer my question.
Answers
Answer:
To calculate the rate of water flow in tons of water per day, you would need to first convert cubic feet per second to cubic feet per day, then multiply that number by the weight of one cubic foot of water in tons.
First, convert cubic feet per second to cubic feet per day by multiplying by the number of seconds per day:
2.03 x 10^6 cubic feet per second x (60 seconds/minute x 60 minutes/hour x 24 hours/day) = 3.66 x 10^9 cubic feet per day
Next, multiply the number of cubic feet per day by the weight of one cubic foot of water in tons:
3.66 x 10^9 cubic feet per day x (62.4 lb/cubic foot / 2200 lb/ton) = 8.34 x 10^6 tons per day
So, on average, water flows over the waterfall at a rate of approximately 8.34 x 10^6 tons per day.
Explanation:
ABOVE
Calculate the standard enthalpy change for the reaction at 25 ∘
C. Standard enthalpy of formation values can be found in this list of thermodynamic properties.
H2O(g)+C(graphite)(s)⟶H2(g)+CO(g)
Answers
The standard enthalpy change for the thermodynamic properties of this reaction is 131.33 kJ/mol.
How to find enthalpy change?The standard enthalpy change for the reaction can be calculated using the standard enthalpies of formation of the reactants and products. The standard enthalpy of formation is the change in enthalpy that occurs when one mole of a substance is formed from its constituent elements in their standard states.
ΔH° = ΔH°f (products) - ΔH°f (reactants)
The standard enthalpies of formation for H2O(g), C(graphite)(s), H2(g) and CO(g) are:
ΔH°f (H2O(g)) = -241.83 kJ/mol
ΔH°f (C(graphite)(s)) = 0 kJ/mol
ΔH°f (H2(g)) = 0 kJ/mol
ΔH°f (CO(g)) = -110.5 kJ/mol
Substituting these values into the equation for ΔH°, we have:
ΔH° = ΔH°f (H2(g)) + ΔH°f (CO(g)) - ΔH°f (H2O(g)) - ΔH°f (C(graphite)(s))
= 0 + (-110.5 kJ/mol) - (-241.83 kJ/mol) - 0
= 131.33 kJ/mol
Therefore, the standard enthalpy change for the reaction at 25°C is 131.33 kJ/mol.
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Pair each cation on the left with an anion on the right that will form a soluble compound and write a formula for the soluble compound. Use each anion only once.Na+ NO3-Sr2+ SO4 2-C02+ S2-Pb2+ CO3 2-For Na+ Express your answer as an ion. Then express it as a chemical formula. You got to do the same thing for the other cations on the left.
Answers
Na+ and NO3- form NaNO3, a soluble compound.
Sr2+ and SO4 2- form SrSO4, a soluble compound.
CO2+ and S2- form CO2S, a soluble compound.
Pb2+ and CO3 2- form PbCO3, a non- soluble compound.
Na+ and NO3- form NaNO3:
This substance, sometimes known as "Chile saltpetre," is made up of a sodium cation (Na+) and a nitrate anion (NO3–). Sodium nitrate is a white, crystalline solid at ambient temperature that is very soluble in water.
Sr2+ and SO4 2- form SrSO4
Strontium sulphate is produced when the strontium ion reacts with the sulphate ion. This reaction falls under the category of an acid-base reaction. Cation and anion interaction. Cation and anion precipitation reaction
CO2+ and S2- form CO2S, a soluble compound.
Typically, CO2, or carbon dioxide, is a gas. Both people and animals exhale it, while plants utilise it to make oxygen. It is dry ice when it is solid.
Such compounds are soluble in water at normal temperatures.
Pb2+ and CO3 2- form PbCO3, a soluble compound.
Pb2+ and CO3 2- do not form a soluble compound.
PbCO3 is a sparingly soluble compound, meaning it has low solubility in water.
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Reaction 1:
Al+S - ALS,
Reaction 2:
If 6 grams of aluminum reacts with 12 grams of sulfur, 15 grams of products are formed.
2 KI + CI, - 2 KCI + 1,
If 6 grams of potassium iodide reacts with 6 grams of chlorine, 12 grams of products are formed.
Choose the reaction above that is the best example of this law, and use evidence to support your choice.
Answers
Sulfur is reduced and aluminium is oxidised in the stoichiometric process.
How many grams of solid aluminum sulfide can be prepared by the reaction of 15.5 grams of aluminum and 22.5 gram of sulfur?
The balanced chemical equation is shown below.
2Al + 3S = Al2S3
2 moles of aluminium are equal to 2g plus 27g, or 54g.
3 moles of S are equal to 3 32 grammes, or 96 grammes.
Al2S3 is equal to 150g (227+332)g per mole.
With 54g of Al, 96g of S responds.
So,22.5g…………………..22.5×54/96
= 12.66 g of Al
Al is present in excess to (15.5-12.66)g.
= 2.84g, meaning that S is an unbounded reactant.
96g of S produced 150g of Al2S3 at this time.
So,22.5g..,
150×22.5/96
= 35.16g Al2S3
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5. Lea's chemistry teacher gave her two 100-ml samples of clear liquid and instructed
her to mix the samples together in a large Erlenmeyer flask, shown below.
500 ml
500
400
200
After vigorously shaking the combined samples, Lea immediately concluded that
each sample contained a different chemical. Which of the following observations
would justify Lea's conclusion?
O
CLEAR ALL
Bubbles formed on the surface of the liquid after it was shaken.
The temperature of the liquid increased slightly as it was shaken.
The liquids mixed together completely and remained clear.
The liquids separated into two distinct layers after they were
shaken.
F
Answers
The observation that would justify Lea's conclusion is that the liquids separated into two distinct layers after they were shaken.
The correct option is D.
What is a chemical reaction?A chemical reaction is a procedure that causes one group of chemical components to change chemically into another.
Chemical reactions, which can frequently be described by a chemical equation, traditionally include changes that only affect the locations of electrons in the formation and dissolution of chemical bonds between atoms, with no change to the nuclei (no change to the elements present.
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Please answer my question.
Answers
Chemical reactions that don't happen on their own are referred to as non-spontaneous reactions. At 324K, the chemical reaction becomes non spontaneous.
What is non spontaneous reaction?Chemical reactions that don't happen on their own are referred to as non-spontaneous reactions. To continue, it needs the impact of outside forces in the form of energy or heat. Reactants do not exchange electrons to form bonds when they are combined together. The response has to be given energy to move forward.
ΔG=ΔH-TΔS
for process to be non spontaneous ΔG=+ve value
substituting all the given values in the above equation, we get
TΔS=ΔH
T= ΔH/ ΔS
=-30.1/-58.3
=324K
Therefore, At 324K, the chemical reaction becomes non spontaneous.
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Ethyl chloride, CH3CH2Cl, used to produce tetraethyllead gasoline additive, decomposes when heated, to give ethylene and hydrogen chloride.
CH3CH2Cl(g) → C2H4(g) + HCl(g)
The reaction is first order. In an experiment, the initial concentration was 0.00100 M. After heating at 500ºC for 155 seconds, the concentration of ethyl chloride was reduced to 0.00083 M. What is the concentration of ethyl chloride consumed after a total of 400 seconds?
Answers
The amount of the ethyl chloride is 7.8 * 10^-4 M.
What is the first order reaction?A first order reaction is a type of chemical reaction in which the reaction rate is proportional to the concentration of only one reactant. The rate law for a first order reaction is given by the equation: rate = k[reactant]
Given that;
ln[A] = ln[A]o - kt
[A] = concentration at time t
[A]o = Initial concentration
k = Rate constant
t = time taken
Then;
k =ln[A] - ln [A]o/t
k = ln(0.00083 ) - ln(0.00100)/155
k = -(-7.1 - (-6.9)/155)
k = 6.45 * 10^-4
Then;
ln[A] =ln(0.00100) - (6.45 * 10^-4 * 400)
= -6.9 - 0.258
= -7.158
[A] = e^(-7.158)
= 7.8 * 10^-4 M
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True or False, a skeleton equation shows the formulas of the compounds participating in a chemical reaction and their states of matter but not the ratio in which they react.
Answers
The given statement is true. A skeleton equation shows the formulas of the compounds participating in a chemical reaction and their states of matter but not the ratio in which they react.
What does a skeleton equation show?A skeleton equation defines the chemical formulas and physical states of the reactants and products, yet it does not account for the relative amounts of the reactants and products. Chemical reactions result simply from the rearrangement of atoms, thus the law of conservation of mass have to be observed.
Skeleton Equations are the equations where there is only chemical formula of reactants and products but no state mentioned and no balancing of atoms on either side of the equation done. For example: Mg + O2 → MgO, it is a skeleton equation. In the equation, the only thing mentioned is the chemical formula of reactant.
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Calculate the pH for the following concentration: [H3O+] = 2.19 x 10-5 M
Answers
pH = -log([H3O+])
[H3O+] = 2.19 x 10^-5 M
pH = -log(2.19 x 10^-5)
pH = -log(2.19) - log(10^-5)
pH = -log(2.19) + 5
pH = 5 - log(2.19)
Approximating log(2.19) to 2 decimal places, we have:
pH = 5 - log(2.19) = 5 - 0.345 = 4.655
So the pH of the solution is approximately 4.655
What is formed when flerovium-289 undergoes decay by emission of a single beta particle?
Answers
When flerovium-289 undergoes decay by emission of a single beta particle, it forms copernicium-289.
Flerovium-289 is an unstable isotope that can undergo beta decay, which is a type of radioactive decay in which a neutron inside the nucleus of an atom is converted into a proton, an electron and an electron antineutrino. This process increases the atomic number of the atom by one and leaves the mass number unchanged.
What is the difference between greenhouse gases and global warming?
Answers
Global warming is the change in the climate of the earth causing it to heat up whereas the greenhouse effect is a naturally occurring phenomena, constantly occurring due to the atmosphere and sunlight.
I hope this helps you! <3 (so sorry if this is wrong :C)
The following reaction takes place in a 1.00 liter container at 750.0 °C.
H2(g) + CO2(g) ⇌ H2O(g) + CO(g)
At equilibrium there are 0.106 moles of H2, 0.106 moles of CO2, 0.094 moles of water and 0.094 moles of CO. What is the Keq for this reaction?
Answers
The Keq for this reaction is 0.857.
What is keq?The equilibrium constant Keq of a chemical reaction is described as the value of its reaction quotient at chemical equilibrium, a state approached by a dynamic chemical system after sufficient time has elapsed at which its composition has no measurable tendency towards further change.
The Keq can be calculated using the ratio of the product concentrations to the reactant concentrations at equilibrium:
Keq = (H2O)(CO) / (H2)(CO2) = (0.094 mol) (0.094 mol) / (0.106 mol) (0.106 mol) = 0.857.
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Write the empirical formula for at least four ionic compounds that could be formed from the following ions:
OH, Fe²+, MnO4, NH
n
Answers
The empirical formula for at least four ionic compounds that could be formed from the following ions is given below":
Fe(OH)2Fe(NH4)2(SO4)2Mn(OH)2NH4Fe(SO4)2Their Empirical FormulasFe(OH)2: The empirical formula for this ionic compound is Fe(OH)2. It is formed from the combination of iron (Fe²+) and hydroxide (OH-) ions.
Fe(NH4)2(SO4)2: The empirical formula for this ionic compound is Fe(NH4)2(SO4)2. It is formed from the combination of iron (Fe²+), ammonium (NH4+) and sulfate (SO4²-) ions.
Mn(OH)2: The empirical formula for this ionic compound is Mn(OH)2. It is formed from the combination of manganese (MnO4-) and hydroxide (OH-) ions.
NH4Fe(SO4)2: The empirical formula for this ionic compound is NH4Fe(SO4)2. It is formed from the combination of ammonium (NH4+), iron (Fe²+) and sulfate (SO4²-) ions.
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What color will a solution of water, glucose, and Benedict's reagent turn?
Answers
Benedict's solution is blue, but if there are any simple carbohydrates, it will turn green or yellow if there are few, and red if there are many.
What exactly are carbohydrates?Polysaccharides are found in a wide range of both healthy and unhealthy foods, notably breads, legumes, cheese, corn, vegetables, chocolates, macaroni, soft drinks, as well as corn. They are also capable of changing forms. The most common and numerous forms include carbohydrates, fibers, and polysaccharides.
What use do carbohydrate molecules serve in the body?Carbohydrates, also thought to as "carbs," are crucial at every stage of life. They serve as the body's primary energy source and indeed the brain's chosen form of energy. The body transforms carbs into glucose, a type of sugar. Enzymes, tissue, and mechanisms in your body use carbohydrates as fuel.
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biodistribution and systemic effects in mice following intravenous administration of cadmium telluride quantum dot nanoparticles (2019)
Answers
Quantum dots (QDs) are created nanoparticles (NPs) with unique optical and electrical characteristics that are used extensively in biomedical applications.
The effects of single-dose intravenous injections of cadmium telluride quantum dots (CdTe-QDs) on tissue distribution and toxicity were examined in male BALB/c mice. Blood, lung, heart, liver, spleen, kidney, testis, and brain all contained CdTe-QDs.
The liver and spleen were the organs where CdTe-QDs accumulated most, then the kidney. Exposure to CdTe-QDs at high dosages caused body weight loss, lethargy, ruffled fur, and mild dehydration.
The total number of white blood cells, including monocytes and neutrophils, serum amyloid A levels, and a number of pro-inflammatory cytokines were all increased after exposure to CdTe-QD.
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Name the element in the fifth period of the periodic table with 6 valence electrons
Answers
Answer: Te Tellurium
Explanation:
All the elements under VlA (Group 16) contain 6 valence electrons, but it specifically asks for period 5 which is a row going left to right on the periodic table.
A photon with an energy of 2.96×10^-19 J is absorbed by Li+ ion. What is the wave length of this photon 
Answers
The wavelength of the photon with an energy of 2.96×10-¹⁹J is 6.71 × 10-⁸m.
How to calculate wavelength?Wavelength is the length of a single cycle of a wave, as measured by the distance between one peak or trough of a wave and the next.
It is often designated in physics as λ, and corresponds to the velocity of the wave divided by its frequency.
E = hν = hc/λ
Where;
E = energyh = Planck's constant ν = frequencyc = the speed of lightλ = wavelength2.96 × 10-¹⁹ = 6.623 × 10-³⁴ × 3 × 10⁸/λ
2.96 × 10-¹⁹λ = 1.9869 × 10-²⁶
λ = 6.71 × 10-⁸m
Therefore, 6.71 × 10-⁸m is the wavelength of the photon.
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When methane, CH4, is combusted, it produces carbon dioxide, CO2, according to the unbalanced equation: CH4 + O2 → CO2 + H2O.
Write the balanced equation for this reaction, and explain how it is possible for 10 grams of methane fuel to burn and emit 27 grams of carbon dioxide. Discuss whether or not this reaction obeys the law of conservation of mass.
answer choices
O The balanced equation is CH4(g)+2O2(g)→CO2(g)+2H2O(g) In the burning reaction, methane (CH₄) reacts with oxygen (O₂) to produce carbon dioxide (CO₂) and water (H₂O): CH₄ + 2 O₂ → CO₂ + 2 H₂O This reaction obeys the law of conservation of mass because nothing was created or destroyed just rearranged.
O Done reading
Answers
Answer:
The balanced equation for this reaction is CH4(g)+2O2(g)→CO2(g)+2H2O(g)
Explanation:
This reaction is possible because 10 grams of methane can react with 8 grams of oxygen to produce 27 grams of carbon dioxide and 18 grams of water. This reaction does obey the law of conservation of mass, as the total mass of the reactants is equal to the total mass of the products.
ences
A small hole in the wing of a space shuttle requires a 16.8 cm² patch.
(a) What is the patch's area in square kilometers (km2)? Enter your answer in scientific notation.
x 104
km²
3
(b) If the patching material costs NASA $3.30/in², what is the cost of the patch to the nearest cent?
$34
Solution
Guided Solut
Answers
Rounding to the nearest cent, the cost of the patch is $34.00.
What is the patch's area in square kilometers (km2)?(a) The patch's area in square kilometers (km2) is 0.0000168 km², which is 1.68 x 10-5 km² in scientific notation.(b) The cost of the patch is $34.00. To find this, we can use the following equation:Cost = (Area in in²) × ($3.30/in²)
Cost = (16.8 in²) × ($3.30/in²)
Cost = $54.24
This is called dimensional analysis, which is a method of problem solving that involves converting from one unit of measure to another.To solve this problem, we first need to convert the 16.8 cm² area into km².We can do this by dividing 16.8 cm² by 1000000 (1 million) to get 0.0000168 km².Then we need to multiply this value by 1000 to convert to square kilometers, which gives us 0.0168 km² in scientific notation (1.68 x 10-4 km²).To calculate the cost of the patch, we need to multiply 0.0168 km² by $3.30/in², which gives us $34.24.We can round this to the nearest cent, giving us a total cost of $34.To learn more about dimensional analysis refer to:
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Aspirin (C9H8O4) is synthesized by reacting salicylic acid (C7H6O3) with acetic anhydride (C4H6O3). The balanced equation is given below.
C7H6O3 + C4H6O3 C9H8O4 + HC2H3O2
(a) What mass of acetic anhydride is needed to completely consume 4.50 ✕ 102 g salicylic acid?
(b) What is the maximum mass of aspirin (the theoretical yield) that could be produced in this reaction?
Answers
A. The mass of acetic anhydride needed to completely consume the salicylic acid is 331.5g
B. The maximum mass of aspirin that could be produced in the reaction is 585.48g.
What is mass ?The term mass is defined as quantitative measure of inertia, a fundamental property of all matter.
A. We have to determine the mass of acetic anhydride that is needed to completely consume 4.50 × 10² g salicylic acid
The given balanced chemical equation for the reaction is
C₇H₆O₃ + C₄H₆O₃ → C₉H₈O₄ + HC₂H₃O₂
1 mole of salicylic acid (C₇H₆O₃) is required to completely react with 1 mole of acetic anhydride (C₄H₆O₃) to produce 1 mole of aspirin (C₉H₈O₄) and 1 mole of HC₂H₃O₂
Then, we will determine the number of moles of salicylic acid present
Mass of salicylic acid = 4.50 × 10² g
= 450 g
Molar mass of salicylic acid = 138.121 g/mol
∴ Number of moles of salicylic acid present = 450 /138.121
Number of moles of salicylic acid present = 3.25mole
1 mole of salicylic acid (C₇H₆O₃) is required to completely react with 1 mole of acetic anhydride (C₄H₆O₃)
So, 3.25 mole of salicylic acid (C₇H₆O₃) would be required to completely react with 0.724 mole of acetic anhydride (C₄H₆O₃)
∴ The number of moles of acetic anhydride needed is 3.25 mole
Now, for the mass of acetic anhydride needed
Molar mass of acetic anhydride = 102.09 g/mol
∴ Mass of acetic anhydride needed = 3.25× 102.09
Mass of acetic anhydride needed = 331.5g
Hence, the mass of acetic anhydride needed to completely consume the salicylic acid is 331.5g
B. We have to determine the maximum mass of aspirin that could be produced in this reaction,
1 mole of salicylic acid (C₇H₆O₃) is required to completely react with 1 mole of acetic anhydride (C₄H₆O₃) to produce 1 mole of aspirin (C₉H₈O₄)
3.25mole of salicylic acid (C₇H₆O₃) will react with 3.25 mole of acetic anhydride (C₄H₆O₃) to produce 0.724 mole of aspirin (C₉H₈O₄)
∴ The maximum number of mole of aspirin that could be produced is 3.25 mole
For the maximum mass of aspirin that could be produced in the reaction,
Molar mass of aspirin = 180.158 g/mol
∴ The maximum mass of aspirin that could be produced = 3.25 × 180.158
The maximum mass of aspirin that could be produced = 585.48g
Hence, The maximum mass of aspirin that could be produced in the reaction is 585.48g.
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HELP HELP HELP 40 POINTS
Answers
Option D is correct. If this reaction uses 6.55 MOLES of P4, it also needs 19.7 mol Mn.
What is Mole?In chemistry, a mole (mol) is a unit of measurement that is used to express how much a chemical substance is present. It is described as the volume of a substance containing 6.022 x 1023 individuals, or the Avogadro number, of entities.
In the reaction described, 5 moles of phosphorus and 12 moles of manganese combine to form 4 moles of Mn3P5. Therefore, 12 moles of Mn are required for every 5 moles of P4 employed in the reaction. Using the ratio of the reactant coefficients in the balanced chemical equation, we can determine how many moles of Mn are required if 6.55 moles of P4 are employed in the reaction:
6.55 moles P4 / 5 moles P4 = x moles Mn / 12 moles Mn
Solving for x, we get:
x = 12 * 6.55 / 5 = 19.7 moles Mn
So, 19.7 moles of Mn are needed if 6.55 moles of P4 is used in the reaction.
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how many inches are there in 110 yards
Answers
Answer: 3960 in
Explanation:
110 yards x 36 = 3960
1 yard = 3 feet or 36 inches
when compared at the same temperature, which of the following has the highest entropy,? group of answer choices h2o(l) c (graphite) f2(l) c (diamond) o2(g)
Answers
O₂ has highest entropy among all the others at the same temperature.
Entropy is defined as the measure of a system's thermal energy per unit temperature that is unavailable for doing useful work. As work is obtained from ordered molecular motion, the amount of entropy is also a measure of the molecular disorder, or randomness, of a system.
Generally, the degree of disorder or uncertainty in a system, the degradation of the matter and energy in the universe to an ultimate state of inert uniformity.
The solid has the lowest amount of entropy since it is a solid. The gas would have the highest amount. Therefore O₂ (g) has the highest entropy.
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What volume of water should be added to 20 mL of a 0.6 M HCl solution if a 0.1 M solution is needed for the lab experiment
Answers
Explanation:
To obtain a 0.1 M HCl solution from a 0.6 M HCl solution, the concentration of the original solution must be diluted. To dilute the solution, water is added.
The dilution formula is: C1 * V1 = C2 * V2, where C1 is the initial concentration, V1 is the initial volume, C2 is the final concentration, and V2 is the final volume.
Knowing the desired final concentration (C2 = 0.1 M) and volume (V2 = 20 mL), the initial concentration (C1 = 0.6 M) and volume (V1) can be calculated as follows:
0.1 * 20 = 0.6 * V1
Solving for V1:
V1 = 20 * 0.1 / 0.6
V1 = 3.33 mL
So, the volume of water that should be added to 20 mL of 0.6 M HCl to obtain a 0.1 M solution is 20 - 3.33 = 16.67 mL.
A copper wire is 39.57 cm long and weighs 1.863 g. The density of copper is 8.933 g/cm3.
What is the radius of the wire in millimeters?
What is the diameter of the wire?
Answers
Volume of the wire = mass / density = 1.863 g / 8.933 g/cm3 = 0.209 cm3
The formula for the volume of a cylinder is given by:
V = πr^2h
where r is the radius, h is the height (length of the wire in this case), and π is the mathematical constant pi (approximately equal to 3.14).
We can equate the two volumes:
0.209 cm3 = πr^2 * 39.57 cm
Dividing both sides by π * 39.57 cm:
r^2 = 0.209 / (π * 39.57) = 0.00067
Taking the square root of both sides:
r = 0.026 cm = 2.6 mm
So, the radius of the wire is 2.6 mm.
The diameter of the wire is equal to twice the radius, or 2 * 2.6 mm = 5.2 mm.
The radius of the copper wire is approximately 0.23 millimeters and the diameter is approximately 0.46 millimeters.
Explanation:To solve this problem, we need to apply some physics concepts together with a bit of geometry. We can use the formula for the volume of a cylinder, which is V = πr²h, where V is the volume, r is the radius, and h is the height (or in this case, the length of the wire). Also, we know that the density (ρ) of an object is mass (m) divided by volume (V), so ρ = m/V. We can use this information and the given data to solve for the radius of the wire.
First, rearrange the density equation to solve for the volume: V = m/ρ. Substituting the given values, we get V = (1.863 g) / (8.933 g/cm³) ≈ 0.208519 cm³.
Next, we substitute V = 0.208519 cm³ and h = 39.57 cm into our volume formula and solve for r: r = sqrt(V/πh) = sqrt(0.208519 cm³/(π*39.57 cm)) ≈ 0.023 cm. Because 1 cm = 10 mm, our answer is about 0.23 mm. The diameter is then simply twice the radius, or about 0.46 mm.
So, the copper wire has a radius of approx. 0.23 mm and a diameter of approx. 0.46 mm.
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Aqueous sodium hydroxide reacts with nitric acid according to the following equation. From this it can be deduced that 114 kJ of energy would be released when
1 mol NaOH reacts with 2 mol nitric acid
2 mol NaOH reacts with 1 mol nitric acid
2 mol NaOH reacts with 2 mol nitric acid
3 mol NaOH reacts with 2 mol nitric acid
Answers
Aqueous sodium hydroxide reacts with nitric acid according to the following equation. From the reaction it can be deduced that 114 kJ of energy would be released when 1 mol NaOH reacts with 2 mol nitric acid.
What do you know about nitric acid?
Nitric acid (HNO3) is an odorless liquid that gives out yellow or red odors. Nitric acid exposure can irritate the eyes, skin, and mucous membranes. It can also lead to dental erosion, delayed pulmonary edema, pneumonitis, and bronchitis. The acid nitric is quite corrosive.
A nitrogen oxoacid with the formula HNO3 is nitric acid, in which the nitrogen atom is linked to a hydroxyl group and the other two oxygen atoms by analogous bonds. It serves as a reagent and a protic solvent. It is a nitrate's conjugate acid.
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