# Frequent question: How many moles are in 4 grams of Cl2?

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## How many moles are in Cl2?

The molecular weight of chlorine (Cl2) is 2×35.5 = 71, so the mass of two moles of chlorine gas is 2×71 g = 142 grams. = 71g/mol. 1 molecule of chlorine has 2 atoms since it’s diatomic. Therefore 5 moles of Cl will contain 5× 6.022×10²³ atoms of chlorine.

## How many moles are in 4 grams?

If there are 2g dyhydrogen per mole, and we have 4g, then we know 4g / 2g per mole = 2 mole dihydrogen in 4g. To convert between moles and number of molecules or atoms, you need to use Avogadro’s number, which is 6.02223, or 6 with 23 zeros.

## How many grams is 2 moles of Cl2?

The molecular weight of chlorine (Cl2) is 2×35.5 = 71, so the mass of two moles of chlorine gas is 2×71 g = 142 grams.

## How many grams are in 3 moles of Cl2?

Well, the molecular weight of Cl2 is 70.9 g/mole. So if you have 3 moles, the mass would be 3 X 70.9 g/mole Cl2 = 212.7 g.

## How many grams are in a mole of Cl?

One mole of chlorine weighs 70 grams. Just like a dozen equals twelve, a mole equals Avogadro’s number of atoms or 6.02 × 1023. 6.02 × 1023 molecules of hydrogen would weigh 2 grams. An equal number of chlorine molecules would weigh 70 grams.

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