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The average mass of one H2O molecule is 18.02 amu. 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.

## How many moles of O are in H2O?

There is one moles of oxygen atoms per mole of water (given by the formula H2O).

## How many moles of water are in 50g of water H2O?

Water or H2O has a Molar Mass of about 18.02 g/mol. n= 2.77 moles of water in a 50 gram sample.

## What is mole of water?

One mole of water has a mass of 18 grams and volume of 18 milliliters or 0.018 liters. … A mole of water is Avogadro’s number of water molecules. Avogadro’s number is so large that it can be difficult to imagine its size.

## How many atoms are in H2O?

Atoms join together to form molecules. A water molecule has three atoms: two hydrogen (H) atoms and one oxygen (O) atom. That’s why water is sometimes referred to as H_{2}O.

## How many mL is a mole of water?

Therefore: 18 mL holds a mole of water.

## How many atoms are in 2 moles of H2O?

1: Two water molecules contain 4 hydrogen atoms and 2 oxygen atoms. A mole of water molecules contains 2 moles of hydrogen atoms and 1 mole of oxygen atoms.

## How many moles is 108 grams of h2o?

Converting Between Grams and Moles

Steps for Problem Solving | How many moles are present in 108 grams of water? |
---|---|

List other known quantities. | 1molH2O=18.02g H_{2}O |

Prepare a concept map and use the proper conversion factor. | |

Cancel units and calculate. | 108gH2O×1molH2O18.02gH2O=5.99molH2O |

Think about your result. |

## How many moles are in 180g of water?

Moles of water =18018=10 mole.

## How many moles of h2o are in 1l?

The density of water is 1g/cc, so if you do dimensional analysis, you can find that in 1 L of water, there is 55.56 mol.

## How many atoms are in a mole of water?

one mole of water contains 6.02 x 10^{23} MOLECULES of water.

But each molecule of water contains 2 H and 1 O atom = 3 atoms, so there are approximately 1.8 x 10^{24} atoms in a mole of water.

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

One mole of water has a molecular mass of 18 grams. Two moles of water have a molecular mass of 18×2=36 grams. Thus the molecular mass of two moles of water is 36 grams.