Chemistry

How many water molecules are in 1.9 moles of water?

Use 6.022 X 1023 for Avogadro's Number!

Use "e-notation" when answering. 6.022 X 1023 would be entered as 6.022e23

11.442E23molecules

Explanation:

Given dа ta:

Number of moles of water = 1.9 mol

Number of molecules of water = ?

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms, ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 * 10²³ is called Avogadro number.

For example,

18 g of water = 1 mole = 6.022 * 10²³ molecules of water

In 1.9 moles:

1.9 mol * 6.022 * 10²³ molecules / 1 mol

11.442 * 10²³ molecules

In e notation:

11.442E23 molecules