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## How many moles are in chlorine?

A conveniently measured amount of any element that equals the mass in grams of that element is called a mole. One mole of hydrogen weighs 2 grams. **One mole** of chlorine weighs 70 grams. Just like a dozen equals twelve, a mole equals Avogadro’s number of atoms or 6.02 × 10^{23}.

## How do you find moles of Cl2?

To solve this problem, you want to have your periodic table (to find the molar mass (g/mol) of Cl2), calculator, and Avogadro’s number handy. The approach is outlined below: 39.2 g Cl2(1 mole of Cl270.9 g Cl2)(6.022⋅1023molecules Cl21 mole Cl2)=**3.33⋅1023 molecules Cl2** . Hence, the answer is 3.33⋅1023 molecules of Cl2.

## How do you calculate the number of moles?

To find the number of moles in a sample, **simply weigh it and divide the weight by the molecular weight.** **The quotient is equal to the number of moles**. Example: How many moles are there in 300 grams of sodium bicarbonate? The molecular weight of sodium bicarbonate is 84 grams/mole.

## What is the formula for moles to grams?

Moles to grams example problem

Solution: Find out the molar mass of the substance (hint: you can use Molar mass of the substance alone to calculate molar mass). The molar mass of KClO3 is 122.548 g/mol. **Multiply the given number of moles** (2.50 mol) by the molar mass (122.548 g/mol) to get the grams.

## How much does 1 mole of 1h weigh?

What’s extraordinary about Avogadro’s Number is that 6.022 x 1023 atoms of any element will always be equal to their atomic mass in grams. This means one mole of hydrogen is **1.0078 grams**. By using the atomic mass of the different elements, we can figure out how much a mole of any molecule weighs.

## How many grams are in 3 moles of chlorine gas?

So the mass is **213 grams**. So, the mass of 3 moles of chlorine molecule is 213gram.

## What is the mole ratio?

A common type of stoichiometric relationship is the mole ratio, which **relates the amounts in moles of any two substances in a chemical reaction**. We can write a mole ratio for a pair of substances by looking at the coefficients in front of each species in the balanced chemical equation.

## How many moles are in H2O?

The number of atoms is an exact number, the number of mole is an exact number; they do not affect the number of significant figures. The average mass of **one mole** of H2O is 18.02 grams. This is stated: the molar mass of water is 18.02 g/mol. Notice that the molar mass and the formula mass are numerically the same.