Table of Contents

- 1 How many moles are in hydrogen gas?
- 2 How many moles are there in 8 grams of hydrogen?
- 3 How many hydrogen atoms are there in 18g of hydrogen gas?
- 4 How many moles are in 10g of hydrogen gas?
- 5 How many moles are in 50g of hydrogen?
- 6 How many grams of hydrogen are in 1g of water?
- 7 How many moles are in 1 kg of hydrogen?
- 8 How many molecules does 18 grams of hydrogen contain?
- 9 Which is bigger a mole or a hydrogen?
- 10 How many hydrogen atoms are in one mole of methane?

## How many moles are in hydrogen gas?

Multiply the volume and pressure and divide the product by the temperature and the molar gas constant to calculate moles of the hydrogen gas. In the example, the amount of hydrogen is 202,650 x 0.025 / 293.15 x 8.314472 = 2.078 moles.

## How many moles are there in 8 grams of hydrogen?

Answer Expert Verified. = 3.01 x 10²³ moles. Therefore, 8 g of H₂ will have = 8 x 3.01 x 10²³ moles = 24.08 x 10²³ moles. Thus, 8 g of H₂ will have 24.08 x 10²³ moles of hydrogen molecules.

**How many moles are in 1g of H2?**

Molar mass of a substance is defined as the mass of 1 mole of that substance. And by 1 mole it is meant a collection of 6.022*10^23 particles of that substance. So number of moles of H2 are 0.5 in this case. And thus it means there are (6.022*10^23)*0.5 particles( here they are molecules) in 1g of H2.

### How many hydrogen atoms are there in 18g of hydrogen gas?

Hydrogen gas is a diatomic molecule, i.e. There are 1.204 x 10^24 atoms of hydrogen present in 18 grams of water. Avogadro’s number (6.022 x 10^23) is a collective number which tells you how many molecules of a substance there are in 1 mole of that substance.

### How many moles are in 10g of hydrogen gas?

5 gram moles.

**How many grams are in 2 moles of carbon?**

Hence \[24g\] of carbon is present in \[2\] moles of carbon.

#### How many moles are in 50g of hydrogen?

3 moles

There are 3 moles of O in 50 g.

#### How many grams of hydrogen are in 1g of water?

By this definition, one mole of hydrogen is 2.016 grams, one mole of methane is 16.043 grams, and one mole of water is 18.015 grams. We can convert any gram quantity of a chemical substance to moles by dividing by its molecular weight.

**What is the mass of 1 mole of O2?**

32 g

Solution — Mass of one mole of oxygen molecule (O2) = molecular mass of oxygen molecule (O2) in gram = 32 g.

## How many moles are in 1 kg of hydrogen?

The atomic mass of hydrogen is 1 g/mole. To make up 1 kilogram or 1000 g of hydrogen element, 1000 moles of hydrogen is required. Each mole has a Avogadro’s number of atoms or atoms. Thus, 1 kg hydrogen element or 1000 moles of hydrogen have atoms (or 1000 times the Avogadro’s number).

## How many molecules does 18 grams of hydrogen contain?

The molecular weight of hydrogen, H_2, is 2 gram/mol, hence 18 gram / 2 gram/mol equals 9 mol. Since hydrogen gas is H2 then its molecular weight is 2.

**How many moles are needed to produce 58.5 g of H2?**

Because Hydrogen and Oxygen react in a 2:1 molar ratio to form water, you need to know how many moles of Hydrogen gas are contained in 58.5 g of H2. Because of the 2:1 H2:O2 molar ratio, divide the moles of H2 by 2 to get the number of moles O2 = 14.286 moles O2. Rounded to 3 sig. fig, the value is 14.3 moles O2.

### Which is bigger a mole or a hydrogen?

The molecular formula for Hydrogen is H. The SI base unit for amount of substance is the mole. 1 grams Hydrogen is equal to 0.992122546977 mole. Note that rounding errors may occur, so always check the results.

### How many hydrogen atoms are in one mole of methane?

The molecular formula of methane ( CH 4) suggests that one molecule of this compound consists of 4 atoms of H. So 1 mole of CH 4 will have 4 mol atom of Hydrogen.