**Contents**show

## Why is the mass of one mole of water?

Mass of 1 Mole of Water

Water (H_{2}O) is **made from 2 atoms of hydrogen and 1 atom of oxygen**. … This means 1 mole of hydrogen weighs 1.0079 grams and 1 mole of oxygen weighs 15.9994 grams.

## What is the mass of one mole?

The mass of one mole of a substance is **equal to that substance’s molecular weight**. For example, the mean molecular weight of water is 18.015 atomic mass units (amu), so one mole of water weight 18.015 grams.

## What is a mole of H2O?

H2O Average atomic mass of H: 1.01 g/mol. Average atomic mass of O: 16.00 g/mol. 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**.

## What is the mass of 2 mole of water?

One mole of H2 O is made up of 2 moles of Hydrogen atoms and 1 mole of Oxygen atom. Mass of two moles of Hydrogen atoms = 2x 1 g/mol = 2 g/mol. Mass of one mole of water = 2 g/mol + 16 g/mol = **18 g/mol**.

## How many liters are in 1 mole of h2o?

For water, 1 mole = 18 g= **22.4 liter**.

## What is the mass of 2 moles of H2O?

Answer. Answer: One mole of H2O is made up of 2 moles of Hydrogen atoms and 1 mole of Oxygen atom. Mass of two moles of Hydrogen atoms = 2x 1 g/mol = **2 g/mol**.