**Contents**show

## How many moles are in water?

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.

## How many molecules of water are in a cup?

Water isn’t a continuous quantity though, it’s composed of individual H_{2}O molecules. A standard cup is 250 mL, which is roughly **8.4×1024 molecules** of water (the exact number is not important, but you should know how to calculate it like in the example below).

## What does 1 mole of water look like?

Thus, for example, one mole of water (H_{2}O) contains **6.02214076×10 ^{23} molecules**, whose total mass is about 18.015 grams and the mean mass of one molecule of water is about 18.015 daltons, roughly a combined atomic mass number of 18.

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Mole (unit)

mole | |
---|---|

Unit of | Amount of substance |

Symbol | mol |

Conversions | |

1 mol in … | … is equal to … |

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

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

## How many molecules are in a mole?

The mole is represented by Avogadro’s number, which is **6.022×10 ^{23} atoms** or molecules per mol.

## How many molecules are in 1g of water?

or 1 g of water contains **(6.022 x 10 ^{23})/ 18 water molecules** and the number comes out to be 3.3455 x 10

^{22}.

## What is mole fraction of water?

In an aqueous solution mole fraction of water is **0.75**.

## How many water molecules are in 2 moles of water?

Since one mole is defined as 6.022 x 10^23, and there are two hydrogen per molecule, that would mean that there are exactly 12.044 x 10^23 molecules of hydrogen in one mole of water. Double that for 2 moles, and there are 24.088 x 10^23 hydrogen atoms in one mole of water.

## Could you swim in a mole of water?

While moles prefer to stay underground and dry, **all moles can swim if the need arises**. They have been observed to swim up to an hour at a time and can cover distances of a half a mile while swimming. They use their powerful arms to swim through the water, much like the way they move through the dirt.

## What is the volume water?

The mass of water is expressed in grams (g) or kilograms (kg), and the volume is measured in **liters (L)**, cubic centimeters (cm^{3}), or milliliters (mL). Density is calculated by the dividing the mass by the volume, so that density is measured as units of mass/volume, often g/mL.