One mole of any substance weighs about the same as the molecular mass of that substance. Hence, there are 3.34×1023 molecules of H2O present in a 10 gram sample of H2O .

## How many moles are present in 10g of H2O?

Answer. =>Molar mass of H2O = 18 g mol-1. 18 g of H2O contains = 6.022×1023 molecules. 10 g of H2O cotains =6.022×102318×10 = 3.34×1023 molecules.

## How many molecules are in a 10.0 g sample of water?

How many water molecules are in a 10.0g sample of water? First you need the molar mass of water(H2O). Given that oxygen is 16 g mole^-1 and hydrogen is 1 g mole^-1 the molar mass of water is 18 g mole^-1. Nx6x10^23 is the number of molecules.

## How many moles are present in 9 gram of H2O?

Water(H2O) has a molecuar mass of 18, this means it weights 18 g per mole. A mole is 6.0221415*1023molecules (Avogadro’s number). If you have 1 g of water, you therefore have 1/18 of a mole, or 3.34*1022 molecules.

## How many molecules are in 10 grams?

One mole of any substance weighs about the same as the molecular mass of that substance. Hence, there are 3.34×1023 molecules of H2O present in a 10 gram sample of H2O .

## How many moles are in 10g of water?

10/18 moles = 10/18 * 6 * 10^23 number of molecules = 3.33 * 10^23 molecules of water. Each molecule of water has 3 atoms, so the total number of atoms in 10g of water is 3*3.33*10^23 = 10^24.

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

And we know that there are 6.022×1023 molecules in one mole water.

## How many molecules of water are in 50 ml of water?

Answer. Answer: Avogadro’s number tells us there are 6.022 x 1023 molecules of water per mole of water. So, next we calculate how many molecules there are in a drop of water, which we determined contains 0.002775 moles: molecules in a drop of water = (6.022 x 1023 molecules/mole) x 0.002275 moles.

## How many grams are in 2 moles of carbon?

So the amount of carbon present in 2 moles of carbon =2×12 g=24g. Hence 24g of carbon is present in 2 moles of carbon.

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

If we have one mole of water, then we know that it will have a mass of 2 grams (for 2 moles of H atoms) + 16 grams (for one mole O atom) = 18 grams.

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

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

## How many moles does H2O have?

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 are there in 9 gram of water?

Answer. = 3. 011 x 10^23.

## How do I calculate moles?

- First you must calculate the number of moles in this solution, by rearranging the equation. No. Moles (mol) = Molarity (M) x Volume (L) = 0.5 x 2. = 1 mol.
- For NaCl, the molar mass is 58.44 g/mol. Now we can use the rearranged equation. Mass (g) = No. Moles (mol) x Molar Mass (g/mol) = 1 x 58.44. = 58.44 g.

## Which one has more molecule 9 gram of water or 9 gram of sugar?

Explanation: 9g of water has more molecules.