The original molarity of an aqueous solution of ammonia whose pH is 11. 02 at 25°C is 0.556 M
Calculation ,
Given : pH = 11.5
[tex][H^{+} ][/tex] = [tex]10^{-11.5}[/tex]
[tex][OH^{-} ][/tex] = [tex]K_{w} /[H^{+} ][/tex] = [tex]10^{-14}[/tex]/ [tex]10^{-11.5}[/tex] = [tex]10^{-2.5}[/tex] M
Kb = [tex][NH_{4}^{+} ][OH^{-} ]/[NH_{4} OH][/tex] = [tex](10^{-2.5})^{2} /C[/tex] = 1.8×[tex]10^{-5}[/tex] M
C = 1/1.8 = 0.566 M
So, molarity of an aqueous solution of ammonia is 0.566 M
pH ia a measure of hydrogen ion concentration , a measure of acidity or alkalinity of the solution .pH scale usually range from 0 to 14 Aqueous solutions at 25°C witha pH less rhan 7 are acidic , whereas , those with pH greater than 7 are basic or alkaline. pOH ia a measure of hydroxide ion concentration , a measure of alkalinity of the solution .
To learn more about molarity
https://brainly.com/question/8732513
#SPJ4
Calculate the approximate amount os sodium hydroxide needed to make 500ml if a. 3 naoh solution.
6 gram of sodium hydroxide (NaOH) needed to make 500ml if 0.3 NaOH solution.
What is molarity?Molarity (M) is the amount of a substance in a certain volume of solution.
Molarity is defined as the moles of a solute per liters of a solution.
The unit of molarity is mol/L.
Volume of NaOH = 500 mL
Molarity of the aqueous solution = 0.3 M
Molar mass of NaOH= (23+16+1) g = 40g
Let the mass of NaOH be X.
Now , according to formula number of moles of a given substance = given mass / molar mass
Therefore, no. of moles of NaOH = X/40
Since, molarity = number of moles of solute/ volume of solution in liter.
Hence, 0.3 = ( X /40) / (500 / 1000)
Solving this we get X= 6g
6 gram of sodium hydroxide (NaOH) needed to make 500ml if 0.3 NaOH solution.
Learn more about molarity, Here:
https://brainly.com/question/12127540
#SPJ4
Draw the mechanism for the interconversion of α-d-glucose and β-d-glucose in dilute hcl
The mechanism for the interconversion of α-d-glucose and β-d-glucose in dilute HCl include the proton transfer in first step and nucleophilic attack in second step.
What is Proton Transfer ?In the first step oxygen donates its lone pair of electron to hydrogen of HCl. There is removal of water molecule from the substance α-d-glucose.
What is Nucleophilic Substitution ?The organic reaction where one nucleophile replaces another is called nucleophilic substitution reaction. These reaction takes place in aromatic compounds, acyl compounds and aliphatic compounds. SN¹ reactions are nucleophilic substitution reaction.
Thus from the above conclusion we can say that The mechanism for the interconversion of α-d-glucose and β-d-glucose in dilute HCl include the proton transfer in first step and nucleophilic attack in second step.
Learn more about the Nucleophilic Substitution here: https://brainly.com/question/14052597
#SPJ4
Sodium hydrogen carbonate were disolved in 10cm cubed of water in a boiling tube . Lemon juice was then added dropwise with shaking until there was no further observable change. Explain the observation which was made in the boiling tube when the reaction was in progress.
The observation is the evolution of carbon dioxide gas.
Acid-base reactionSodium hydrogen carbonate is a base while lemon juice contains an acid known as citric acid.
Thus, the reaction in the illustration is involving an acid and a base.
Sodium hydrogen carbonate goes by the formula: NaHCO₃
Citric acid goes by the formula: C₆H₈O₇
The reaction between the two goes thus:
[tex]3 NaHCO_3 + C_6H_8O_7 --- > 3 H_2O + 3 CO_2 + Na_3C_6H_5O_7[/tex]
The carbon dioxide gas is evolved from the reaction vessel in the form of bubbles.
More on chemical reactions can be found here: https://brainly.com/question/22817140
#SPJ1
The _____ property allows the positioning of an element to the right or left of other elements.
Answer:
can u show the answer it give you for the question
The float property allows the positioning of an element to the right or left of other elements.
In the context of web development and CSS, the "float" property is used to control the positioning of elements within a container. It allows you to move an element to the left or right of its containing element, enabling other elements to flow around it.
When an element is floated, it is taken out of the normal flow of the document, allowing other elements to wrap around it. This can be particularly useful for creating layouts where you want elements to appear side by side or to create text flow around images.
The "float" property can take one of two values: "left" or "right". When an element is set to "float: left", it will move to the left of its containing element, and any subsequent elements will wrap around it on the right side. Conversely, when set to "float: right", the element will move to the right, and subsequent elements will wrap around it on the left side.
Learn more about web development from the link given below.
https://brainly.com/question/30403203
#SPJ2
How many bonds can one carbon atom form with another carbon atom?
Answer:
four
Explanation:
i said so
What type of bond is joining the two hydrogen atoms?
a. two hydrogen atoms sharing a pair of electrons.
b. covalent hydrogen hydrophobic ionic hydrophilic
Covalent hydrogen bond is joining the two hydrogen atoms.
The simplest material with a covalent hydrogen bond is the hydrogen molecule. Two hydrogen atoms, each with one electron in a 1s orbital, combine to produce it. The two electrons in the covalent link are shared by both hydrogen atoms, and each one takes on an electron configuration like that of helium.The hydrogen atom's single electron shell, which contains space for two electrons, is where the electrons are located. The same nature of the hydrogen atoms prevents either from stealing an electron from the other in order to complete its own electron shell and create an ionic bond. The two electrons are thus shared by the two hydrogen atoms in a covalent link.learn more about Covalent hydrogen bond here: https://brainly.com/question/20607646
#SPJ4
Draw the mechanism for the reaction of acetyl chloride (ethanoyl chloride) with the ethoxide anion to yield ethyl acetate (ethyl ethanoate)
Ethanoyl chloride is a common acyl chloride. Any other acyl chloride will function similarly. Similarly, ethanol is regarded as a typical alcoholic beverage. simply substitute the CH3CH2 group with an alkyl group.
The first stage of the reaction (the addition stage) includes a nucleophilic attack on the relatively positive carbon atom by one of the lone pairs on an ethanol molecule's oxygen.
The second stage (elimination) occurs in two stages. The carbon-oxygen double bond reforms in the first step, releasing a chloride ion.
The ethanoyl chloride then removes a hydrogen ion, yielding ethyl ethanoate and hydrogen chloride.
To learn more about ethanoyl chloride please visit -
https://brainly.com/question/13043444
#SPJ4
Maya prepared 0.50 liters of a solution by dissolving 2.0 moles of an unknown compound in water. What is the molarity of the solution Maya prepared
Answer:
4 M
Explanation:
Molarity can be represented by the following ratio:
Molarity = moles / volume (L)
Since you have been given both the mass and volume, you can plug the values into the equation and solve for molarity.
Molarity = moles / volumes
Molarity = 2.0 moles / 0.50 L
Molarity = 4 M
The normal boiling point of fingernail polish remover is 56℃. what is the vapor pressure of fingernail polish remover at the salon, which is kept at a temperature of 22℃ for the comfort of customers?
The normal boiling point of fingernail polish remover is 56℃ the vapor pressure of fingernail polish remover at the salon 0.027 atmospheric pressure
What is atmospheric pressure?The pressure exerted by the vapors due to the atmosphere as it is surrounded by it only is known as vapor pressure and its unit is atm.
As air have small molecules which forms multiple layers and create pressure.
vapor pressure = {1/T1 - 1/T2}
T1 = 56 c
T2 = 22 c
substituting the values,
vapor pressure = [ 1/ 56 - 1 / 22 ]
= 0.027 atm.
Therefore, the vapor pressure of nail paint remover is 0.027 atm
Learn more about vapor pressure , here:
https://brainly.com/question/8696772
#SPJ4
How many electrons are present in the nonbonding π molecular orbital of the allyl anion?
The number of electrons present in the nonbonding π molecular orbital of the allyl anion is 4 electrons . 2 in the pi bond of the allyl ion and the other two will be present as a lone pair on the carbon atom.
What is a nonbonding π molecular orbital?It is a type of orbital that does not affect the bond order or bond length and the bond order of the molecule and does not affect its energy too.
In allyl anion allyl anion occupies 4 pi electrons and ψ2 is the Highest Occupied Molecular Orbital whereas ψ3* is the Lowest Unoccupied Molecular Orbital
Therefore, the number of electrons present in the nonbonding π molecular orbital of the allyl anion is 4 electrons . 2 in the pi bond of the allyl ion and the other two will be present as a lone pair in on the carbon atom.
Learn more about nonbonding π molecular orbital, here :
https://brainly.com/question/28175150
#SPJ4
Type the correct answer in each box. which chemical symbols will complete the equation for this single displacement reaction? 2nabr cl2 → 2 2
Chemical symbols that will complete the equation are 2NaCl + Br2
The balanced Chemical reaction is -
[tex]2NaBr[/tex] + [tex]Cl_{2}[/tex] → [tex]2NaCl[/tex] + [tex]Br_{2}[/tex]
Chlorine ([tex]Cl_{2}[/tex]) is more reactive than bromine([tex]Br_{2}[/tex]). So, chlorine displaces bromine from its compound.
What is a Single Displacement Reaction?A single displacement reaction is type of reaction in which element react with compound and take place of other element in that compound.There are three primary sorts of single not set in stone by the reactivity series: Metal Replacement: where metal will dislodge another metal. Hydrogen Replacement: where hydrogen gas is created through relocation by a metal. Halogen Replacement: when a halogen takes part in relocation.Mostly the more reactive element displaces the less reactive elements from its compound.To learn more about single displacement reaction from the given link
https://brainly.com/question/11562230
#SPJ4
An unknown gas effuses 2. 165 times faster than xe. what is the molar mass of the gas? show the set up and answer with unit
27.94 g/mole is the molar mass of the unknown gas.
Use Graham's Law, which indicates that the square root of a gas's molar mass determines its rate of effusion.
The following equation compares two distinct gases, (a) and (b), and expresses this:
sqrt(M(b)/M) = R(a)/R(b) (a)
R is the effusion rate.
square root = sqrt
the molar mass, M
In response to your query, if gas (a) is the unknown gas and Xe(M = 131 g/mol) is the second gas, we have:
sqrt(M(Xe)/M(a) = 2.165, where R(a)/R(Xe)
Square both sides, and you get:
(2.165)² = 131 g/mol/ M (a)
M(a)(2.165)² = 131
M(a) is equal to 131/(2.165)² = 27.94 g/mol.
Having a molar mass of 27.94 g/mol, the unknown gas.
Learn more about Graham's law of effusion here https://brainly.com/question/22359712
#SPJ4
Heliox is a mixture of helium and oxygen gas used to help patients with breathing difficulties. It is also used for scuba diving. The total pressure in a tank of heliox is 208 atm. If the mole fraction of o2 is 0. 220, what is the partial pressure of he in the tank?.
It should be remembered that the mole fraction of any component making up a system is 1.
A mole fraction is what?the proportion of the moles of one component to the total moles of all the components in a solution or other mixture.
What is mole fraction and an example of it?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 mixture also contains 90% methane since the amount fractions resemble mole fractions.
How is the mole fraction determined?By dividing the moles of the solute by the total moles of the substances in the solution, you may determine the mole fraction of the solute.
learn more about mole fraction here
https://brainly.com/question/20343503
#SPJ4
Write a balanced chemical equation for the standard formation reaction of liquid acetic acid hch3co2.
The balanced chemical equation for the standard formation reaction of liquid acetic acid is given as ,
[tex]2C(gr) +2H_{2} (g) +O_{2} (g)[/tex] → [tex]CH_{3} COOH(l)[/tex]
The reaction that form the products from their elements in their standard state is called formation of reaction .The acetic acid consist C , H , and O , So, determine their standard state . Carbon is graphite at 25°C and 1 atm , whereas hydrogen and oxygen are diatomic gases . Hence , we start with unbalanced reaction.
[tex]C(gr) +H_{2} (g) +O_{2} (g)[/tex] → [tex]CH_{3} COOH(l)[/tex]
The balanced chemical equation for the standard formation reaction of liquid acetic acid as,
[tex]2C(gr) +2H_{2} (g) +O_{2} (g)[/tex] → [tex]CH_{3} COOH(l)[/tex]
The combustion of liquid acetic acid is given as,
[tex]CH_{3} COOH(l) + 2O(g)[/tex] → [tex]2CO_{2}((g) +2H_{2} O(l)[/tex] ΔH =-873
learn more about balancing chemical equation
https://brainly.com/question/15052184
#SPJ4
What is the mass (g) of a piece of magnesium wire that produces 41. 8 ml of hydrogen gas collected over water at 21. 0 °c and at a pressure of 752 torr?
The mass (g) of a piece of magnesium wire that produces 41. 8 ml of hydrogen gas collected over water at 21. 0 °c and at a pressure of 752 torr is 0.041 gm.
Calculation,
According to ideal gas equation,
PV = nRT
Where, P is the pressure = 752 torr = 752 mmHg/760 mmHg/atm
P is the pressure in atm = 0.989atm
V is the volume = 41. 8 ml = 0.0418 L
R is the universal gas constant = 0.0821 Latm/mol K
T is the temperature = 21. 0 °C = 21. 0 + 273 = 294 K
n is the number of moles = ?
By putting value of P , V , T , and R in equation (i) we get,
0.989atm × 0.0418 L = n ×0.0821 Latm/mol K ×294 K
n = 0.989atm × 0.0418 L/0.0821 Latm/mol K×294 K = 0.00171 mol
Number of moles (n) = given mass/ molar mass = given mass/24.305
Mass = Number of moles×molar mass = 0.00171 mol×24.305 g/mol
Mass of the magnesium wire = 0.041 gm
learn more about hydrogen gas
https://brainly.com/question/12745309
#SPJ4
Which of the following pairs of elements can combine to form an ionic compound?
A hydrogen and carbon
B aluminium and magnesium
C silicon and chlorine
D magnesium and sulphur
Answer:
D.) magnesium and sulphur
Explanation:
Generally, ionic bonds form between a metal and a nonmetal.
Generally, covalent bonds form between two nonmetals.
Generally, metallic bonds form between two metals.
Nonmetals are located on the right side of the periodic table (apart from the noble gases in the final column). Hydrogen is also a nonmetal. Metals are every other element in the periodic table.
A.) Hydrogen (nonmetal) and carbon (nonmetal) = covalent
B.) Aluminum (metal) and magnesium (metal) = metallic
C.) Silicon (nonmetal) and chlorine (nonmetal) = covalent
D.) Magnesium (metal) and sulphur (nonmetal) = ionic
A gas mixture contains ar and h2. what is the total pressure of the mixture, if the mole fraction of h2 is 0. 350 atm and the pressure of h2 is 0. 480 atm?
Considering the Dalton's partial pressure, the total pressure in the mixture of gases is 1.371 atm.
The pressure exerted by a particular gas in a mixture is known as its partial pressure.
So, Dalton's law states that the total pressure of a gas mixture is equal to the sum of the pressures that each gas would exert if it were alone:
[tex]P_{T}[/tex] = [tex]P_{1}+P_{2}+......+P_{n}[/tex]
where n is the amount of gases in the mixture.
Dalton's partial pressure law can also be expressed in terms of the mole fraction of the gas in the mixture. So in a mixture of two or more gases, the partial pressure of gas A can be expressed as:
[tex]P_{A}[/tex] = [tex]X_{a}P_{T}[/tex]
In this case, the partial pressure of gas H₂ can be expressed as:
[tex]P_{H2}[/tex] = [tex]X_{H2} P_{T}[/tex]
You know:
[tex]P_{H2}[/tex] = 0.48 atm
[tex]X_{H2}[/tex] = 0.35
Replacing in the definition of partial pressure of gas H₂:
[tex]0.48atm = 0.35P_{T}[/tex]
Solving:
[tex]P_{T}[/tex] = [tex]\frac{0.48atm}{0.35}[/tex]
[tex]P_{T}[/tex]= 1.371 atm
In summary, the total pressure in the mixture of gases is 1.371 atm.
Learn more about partial pressure: https://brainly.com/question/15302032
#SPJ4
How many grams of agcl would be needed to make a 4. 0 m solution with a volume of 0. 75 l?
430 g of AgCl would be needed to make a 4.0m solution with a volume of 0.75 L.
What is Molarity?The amount of a substance in a specific volume of solution is known as its molarity (M). The number of moles of a solute per liter of a solution is known as molarity.Calculation of Required amount of AgClRemember that mol/L is the unit of molarity (M).
We can compute the necessary number of moles of solute by multiplying the concentration by the liters of solution, according to dimensional analysis.
0.75L×4.0M=3.0mol
Then, using the periodic table's molar mass for AgCl, convert from moles to grams:
3.0mol×143.321gmol=429.963g
The final step is to round to the correct significant figure, which in this case is two: 430g.
Hence, 430 g of AgCl would be needed to make a 4.0m solution with a volume of 0.75 L.
Learn more about Molarity here:
https://brainly.com/question/8732513
#SPJ4
What types of elements have atomic radii which remain relatively constant across a period? group of answer choices transition metal elements nonmetal
"Transition metal elements" are the type of element which have atomic radii which remain relatively constant across a period.
Periods refer to the horizontal lines of the periodic table. Each period represents the sequential occupation of an atom's valence shell orbitals, also with longer periods representing the employment of an atom's d subshell orbitals.
As the atomic number rises, more electrons, as well as protons, are present, increasing attraction over time, which drives the atomic radius to shrink over time.
Therefore, "Transition metal elements" are the type of element which have atomic radii which remain relatively constant across a period.
To know more about period
https://brainly.com/question/14310368
#SPJ4
What molarity should the stock solution be if you want to dilute 25. 0 ml to 2. 00 l and have the final concentration be 0. 103 m?
The stock solution should have a molarity of 8.24M.
Proportional sets. C₁V₁=C₂V₂ is used to calculate an unknown quantity where two solutions/mixtures are proportional.
It follows that the initial concentration times the initial volume will equal the final concentration times the final volume because the sum does not vary.
Using the formula as follows;
C₁V₁ = C₂V₂
Where;
C₁ = initial concentration of the stock solution
C₂ = final concentration of the stock solution
V₁ = initial volume of the stock solution
V₂ = final volume of the stock solution
According to the information given in this question,
V₁ = 25mL = 25/1000 = 0.025L
V₂ = 2L
C₁ =?
C₂ = 0.103M
Using the formula; C₁V₁ = C₂V₂
C₁ = C₂V₂/V₁
C₁ = (0.103 × 2) / 0.025
C₁ = 0.206 / 0.025
C₁ = 8.24 M
Therefore, the stock solution should have a molarity of 8.24M.
Learn more about molarity here:
https://brainly.com/question/26873446
#SPJ4
When atoms of beryllium-9 are bombarded with alpha particles, neutrons are produced. What new isotope is also formed?
When atoms of beryllium-9 are bombarded with alpha particles, neutrons are produced, the new isotope will be C-6.
In research, the physicist James Chadwick attacked Beryllium using alpha particles produced by the nuclear reactions of polonium naturally. High radiation penetration through some kind of lead shield was seen, which the then-current particle theories were unable to account for.
There was indeed the production of a carbon-12 nucleus as well as the production of a neutron whenever one blasted beryllium with alpha particles.
The reaction of alpha decay can be written as:
[tex]Be^{9} _{4} + He^{4} _{2}[/tex] → [tex]C^{12} _{6} + n^{1} _{0}[/tex]
Therefore, when atoms of beryllium-9 are bombarded with alpha particles, neutrons are produced, the new isotope will be C-6.
To know more about alpha particles
https://brainly.com/question/2288334
#SPJ4
The energy levels of a quantum particle-in-a-box ______ as the quantum number increases.
Answer:
Explanation:
The energy of a particle in the box increases proportionally to n-squared. This means that the energy spacings increase at high values of n.
The energy levels of a quantum particle-in-a-box decreases as the quantum number increases.
What are Quantum Numbers?Quantum numbers can be used to describe the trajectory and the movement of an electron in an atom.
The set of numbers used to describe the position and energy of an electron in an atom is called quantum numbers.
These are the four quantum numbers, i.e., principal quantum number (n), magnetic quantum number (m), azimuthal quantum number (l), and spin quantum number (s).
As the energy levels of a quantum particle-in-a-box decreases as the quantum number increases.
Therefore, The energy levels of a quantum particle-in-a-box decreases as the quantum number increases.
Learn more about Quantum Numbers, here:
https://brainly.com/question/16746749
#SPJ2
Click and hold the chemistry book. slide it down so its surface touches the surface of the physics book. then slowly move the chemistry book back and forth to simulate friction. what happens to the speed of the particles of the chemistry book?
The temperature of the chemistry book decreasing as the chemistry book slides across it is the difference when motion is slower.
What is Temperature?
Temperature is a unit used to convey hotness or coolness. It can be stated in terms of any number of arbitrary scales and indicates the direction in which heat energy will naturally flow, i.e., from a hotter body to a cooler body (one at a lower temperature). Temperature is not the same as the energy of a thermodynamic system; for instance, an iceberg has a significantly larger total heat energy than a match, despite the fact that a match is burning at a much higher temperature.
What is relation between motion and temperature ?
When motion is slow , there is an decrease in friction and decrease in thermal(heat) energy which leads to decrease in temperature.
Read more about Temperature here :
brainly.com/question/2331658
#SPJ4
Answer:
The speed of the particles of the chemistry book increases when the chemistry book slides across the physics book.
Explanation:
edmentum
Chemical reactions can be detected by: _________
a) color change from reactants to products
b) the production of a precipitate
c) a change in temperature
d) an increase of surface area
(A) Color changes from reactant to products.
The rate of a chemical reaction is calculated by dividing the rate of change in a reactant or product's concentration by the coefficient from the equation's balanced state.
2N2O5(g) → 4NO2(G) + O2(g)
A change in color and the appearance of bubbles are two indications of a chemical shift.In a chemical process, the makeup of the components changes; in a physical change, the appearance, smell, or straightforward exhibition of a sample of matter changes without changing its composition.
Despite the fact that we refer to them as physical "reactions," nothing is actually changing. A change in the substance in question's elemental composition is necessary for a reaction to occur. Therefore, from now on, we will simply refer to bodily "reactions" as physical changes.
Physical modifications must only cause a variation in display without altering the composition. Typical modifications include, but are not limited to:
Texture\Color\Temperature\Shape
learn more about Chemical reactions: https://brainly.com/question/16416932
#SPJ4
What type of response to chemical exposure is an immediate or rapid harmful reaction?.
An acute effect is an immediate or rapid harmful reaction to a exposure.
A chronic effect is a permanent/ long-lasting consequence from exposure to a single dose or to repeated lower doses of a harmful substance.
What is an acute effect?
Acute (short-term) effects show up immediately or soon after exposure to the chemical. They may be minor, like nose or throat irritation, or they could be serious, like eye damage or passing out from chemical vapors. It is an adverse effect on a human or animal body, with severe symptoms developing rapidly and coming quickly to a crisis.
What is a acute effect example?
Examples of acute health effects include dizziness, skin irritation, and throat irritation. Keep in mind that a chemical may cause both acute and chronic effects.
Learn more about acute effect:
brainly.com/question/9650913
#SPJ4
As a gaseous element condenses, the atoms become ________ and they have ________ attraction for one another.
As a gaseous element condenses, the atoms become closer together and they have more attraction for one another.
What is Condensation?The transformation of water vapour into liquid is known as condensation. The process is the opposite of evaporation, in which liquid water turns into a vapour. Either the air is chilled to its dew point or it gets too saturated with water vapour to retain any more water, causing condensation to occur.
Attraction - Gas Particles move continuously in a straight path in a gas. They are significantly further apart and move independently of one another because the kinetic energy of the molecule is larger than the attraction force between them. There are often almost no attractive forces between particles.
to learn more about condensation go to - brainly.com/question/1268537
#SPJ4
An overpack containing four one-liter metal cans of NA1993, Compounds, cleaning liquid, a Class 3 (Flammable liquid), PG III, being offered for transportation by highway, may qualify for _______________
An overpack containing four one-liter metal cans of NA1993, Compounds, cleaning liquid, a Class 3 (Flammable liquid), PG III, being offered for transportation by highway, may qualify for specification packaging. This is further explained below.
What is specification packaging?Generally, The term "specification packaging" refers to a package that meets one of the packaging specifications or standards listed in this subchapter's parts 178 or 179.
In conclusion, It's possible that an overpack that contains four metal cans of one liter each filled with NA1993, Compounds, cleaning liquid, a Class 3 (Flammable liquid), PG III, and that's being provided for transportation on the highway might qualify as specified packing.
Read more about specification packaging
https://brainly.com/question/15494046
#SPJ1
If you reacted 93.7 grams of iron with excess copper sulfate solution, what mass of copper would you expect to make? you may need to balance the equation first. fe cuso4 -> cu feso4
Answer is although the question should have 3 significant figures.
What is significant figures? Chemical equationFe + CuSO4 --> Cu + FeSO4
It is already balanced
Molar ratios1 mol Fe : 1 mol CuSO4 : 1 mol Cu : 1 mol FeSO4
atomic masses of Fe and CuFe: 55.8 g/mol
Cu: 63.5 g/mol
number of moles of Fenumber of moles = mass in grams / atomic mass = 93.7 g / 55.8 g/mol = 1.679 mol
number of moles of Cu:1 mol Fe / 1 mol Cu => 1.679 mol Fe / 1.679 mole Cu
mass of Cu in 1.679 moles Cumass = atomic mass * number of atoms = 63.5 g/mol * 1.679 moles = 106.6 g = 107 rounded to 3 significant figures.
To learn more about significant figures, refer to:
https://brainly.com/question/24491627
#SPJ4
What is the molarity of a koh solution if 200 ml of the solution contains 0. 6 moles KOH?
3M
3M is the molarity of a koh solution if 200 ml of the solution contains 0. 6 moles KOH.
Molarity : Molarity is defined as the number of moles of solute present in one liter of solution.
We know that,
Molarity = [tex]\frac{n*1000}{v}[/tex]
where,
n = moles of solute of KOH = 0.6
V= volume of solution in ml= 200 ml
Now on substituting the values in the molarity formula,
molarity = [tex]\frac{0.6*1000}{200}[/tex] = 3M/L
Therefore, molarity = 3M
What is meant by molarity?The amount of a substance in a specific volume of solution is known as its molarity (M). The number of moles of a solute per liter of a solution is known as molarity. The molar concentration of a solution is another name for molarity.To learn more about molarity visit:
https://brainly.com/question/8732513
#SPJ4
A mutation has occurred directly after the start codon within an mrna sequence. which provided mutation will have the most serious effect on the resulting polypeptide?
A mutation has occurred directly after the start codon within an mrna sequence. A deletion of two nucleotide provided mutation will have the most serious effect on the resulting polypeptide.
What a codon in mRNA sequence provides?The first codon in mRNA transcript is known as start codon.
Start codon provides initiation signals for the ribosomes to start the process of translation during which formation of polypeptide chain takes place.
What is frameshift mutation?It arises when the normal sequence of codon is disrupted by the insertion or deletion of one or more nucleotides, provided that the no. of nucleotide which is added or removed is not multiple of three.
Thus, we concluded that the deletion of two nucleotide make frameshift mutation.
learn more about mutation:
https://brainly.com/question/13923224
#SPJ4
