As in the given question we have to calculate how many moles are present in the 25 grams of water and for this we have to divide the given weight of water by the molecular weight / mass of water. Hence, 1.38 moles (mol) are present in 25 grams of water.

## How many moles are in 25.2 grams of water?

1 Expert Answer

Hydrogen has an atomic weight of 1; and oxygen has an atomic weight of 16 (check the periodic table for the atomic weights). So, one mole of water has a mass of 16 +1+1 = 18 grams. So, if one mole has a mass of 18 grams, 25 grams would have a mass of 25 grams/ 18 grams per mole or 1.39 moles.

## How many moles are in 27 grams of water H2O?

Answer and Explanation: There are 1.5 moles of water in a 27 gram sample of water. The molar mass of water is 18.02 gmol g m o l .

## How many water molecules are present in 25.0 grams of H2O?

Here we have 25.0 g/(18.0g/mole) = 1.39 moles water (3 sig figs). Multiply 1.39 moles times the definition of a mole to arrive at the actual number of water molecules: 1.39 (moles water) * 6.02 x 1023 molecules water/(mole water) = 8.36 x 1023 molecules water.

## How many moles are in 20 grams of water?

Therefore, 20g of water =20/18=1. 11 mole.

## How many moles is 25 grams water?

Hence, 1.38 moles (mol) are present in 25 grams of water.

## How many grams are in 3.3 mol K2S?

Answer Expert Verified

In 3.3 moles of potassium sulphide (K2S), there are 363.99 g.

## How many moles are in 50 grams of water?

1 Answer. There are 3 moles of O in 50 g.

## How many molecules are there in 50 grams of water?

2.77 mol * (6.02*10^23 molecules/mol) = 2* 10^24 molecules (1.668 * 10^24 rounded) of water in 50 grams.

## How many grams are in H2O?

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.

## Is Avogadro’s Number?

Avogadro’s number is defined as the number of elementary particles (molecules, atoms, compounds, etc.) per mole of a substance. It is equal to 6.022×1023 mol-1 and is expressed as the symbol NA. Avogadro’s number is a similar concept to that of a dozen or a gross.

## How many atoms are in h2o?

There are three atoms in a water molecule: an oxygen atom and two atoms of hydrogen, which are bonded together like small magnets.

## How many molecules are in 2 moles?

Using Avogadro’s Number to Calculate the Number of Molecules

Here’s where you can use Avogadro’s number: Thus, 2 moles of NaCl contain 1.2 x 1024 molecules of NaCl.

## What is the mass of 20 grams of water?

How much is 20 grams of water? How big is 20 grams of water?

…

Volume of 20 Grams of Water.

20 Grams of Water = | |
---|---|

0.08 | Metric Cups |

20.00 | Milliliters |

## What is the mole of 12 gram of oxygen gas?

Therefore, 12 g of oxygen gas has 0.375 moles.

## How many moles are in 22 grams of CO2?

The number of moles in 22g of CO2 = 22/44 = 0.5.