What is the total mass of 2.0 moles of diatomic hydrogen?

Answers

Answer 1

Answer:

Explanation:

A diatomic molecule is defined as the molecule which contains two atoms.

For example, a $H_(2)$ molecule has two atoms of hydrogen.

Molar mass of a $H_(2)$ molecule is 2.0 g/mol. Therefore, calculate the mass of 2.0 moles of diatomic hydrogen as follows.

No. of moles = $\frac{mass}{\text{molar mass}}$

2.0 mol = $(mass)/(2.0 g/mol)$

mass = 1 g

therefore, we can conclude that total mass of 2.0 moles of diatomic hydrogen is 1 g.

Answer 2

Answer:

diatomic hydrogen is written as H2 (2.02 grams H2) <------- if each hydrogen atom is 1.01 grams, then two hydrogen atoms are 2.02 grams 2.0 moles H2 X 2.02 grams H2 ------------- (divide to cancel moles) = 4.04 grams/mole H2 ÷ one mole = 4.04 grams H2

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Atoms of different isotopes of the same element differ in their total number of electrons neutrons protons valence electrons

Answers

The ans is neutrons. Isotopes of the same element have the same number of protons(and neutrons) but different number of neutrons.

Does 1-propanol expected to have a higher boiling point than ethyl methyl ether

Answers

Indeed it is. Reasons being that the hydrogen bonds in the 1-propanol is difficult to break. Hence, more energy or heat is needed to be applied. Ethyl methyl ether on the other hand doesn't have hydrogen bonds and that explains why it has a lower boiling point.
*try drawing their structural formula, from there you'll be able to differentiate better*

The solution set of axequalsb is the set of all vectors of the form wequalspplusbold v subscript h, where bold v subscript h is any solution of the equation axequals0.

Answers

Answer : Incorrect

Explanation : In the given solution set of Ax = b;
is set of all vectors to form w= p + $V_(h)$
here $V_(h)$ is is any solution of the equation Ax = 0;

this stands to be incorrect, as the correct would only exists when some vector p is found to be like this Ap=b

Baking a cake is an example of -a. forming mixtures.
b. forming solutions.
c. exothermic reactions.
d. endothermic reactions.

Answers

I think the correct answer is D. Baking a cake is an example of endothermic reaction. The chemical changes happening when you bake a cake includes denaturing proteins in milk, eggs, and flour. Chemical bonds are broken and new bonds are made. To aid these changes, heat is supplied by the heat in an oven.

Considering the law of conservation of mass, if 56 g samples of solid iron (Fe) reacts with 24 g of oxygen (O2), how many grams of Iron Oxide (FeO) are obtained?

Answers

Answer:

62_grams of FeO

Explanation:

Molar mass of Fe = 55.845_g/mol

Molar mass of O2 = 15.999_g/mol

From law of conservation of mass

2 moles of Fe combines with one mole of O2 to form 2 moles of FeO

Number of moles of Fe and O2 present = mass/(molar mass) = 56/55.845~1

and 24/16 = 1.1.5

Therefore

1 part of Fe will react with 0.5 part of one mole of O2

which is 54_g of Fe reacts with 8_g to form 54+8 = 62_grams of FeO

The distance between stars is typically measured in

Answers

The distance between stars is typically measured in light years, or the amount of distance traveled by light in one year. This is because stars are extremely far apart, and measuring the distance with a smaller unit of measurement would result in ridiculously large numbers that would be difficult to work with.

Final answer:

The typical measure for the distance between stars is the light-year. Light-year and parsec are units used to quantify the enormous distances in the universe.

Explanation:

The distance between stars is typically measured in light-years. This term, 'light-year', refers to the distance that light can travel in one year, which is approximately 9.461 trillion kilometers or 5.879 trillion miles. Another less commonly used unit is the parsec, which is equivalent to about 3.26 light years. Such large units are necessary due to the vast distances between stars in the universe.

So, The distance between stars is typically measured in light-years.

Learn more about Distance between stars here:

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