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## How do you find moles of hydrogen?

Use the mass of the hydrogen gas to calculate the gas moles directly; **divide the hydrogen weight by its molar mass of 2 g/mole**. For example, 250 grams (g) of the hydrogen gas corresponds to 250 g / 2 g/mole = 125 moles.

## How do you calculate how many moles you have?

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.

## How many moles are in 6g of hydrogen?

Answer: Divide the given mass (6.2 g) by the molar mass of hydrogen gas, which is 2.0 g, and you get **3.1 moles**.

## What does n m/m mean?

n = m/M n is the **amount of substance**, in moles, mol. m is the mass of the substance, in grams, g. M is the molar mass of the substance (the mass of one mole of the substance) in g mol-1. Molar masses: These. will be given in.

## Does 1 mole of water contain 2 moles of hydrogen?

Mass of 1 Mole of Water

A mole of water molecules would be **2 moles of hydrogen atoms plus 1 mole of oxygen atoms**. From the periodic table we see the atomic weight of hydrogen is 1.0079 and the atomic weight of oxygen is 15.9994. Atomic mass is the number of grams per mole of the element.