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## How many molecules are in 6 grams of h20?

There are **2.2×10 ^{23} molecules** in 6.6 g H

_{2}O.

## How many grams of water are in 1 mole of water?

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 are present in 5 gram of water?

**5/18 moles** for 5 grams of water.

## How many moles are 3.6 of water?

Hence, the number of moles present in 3.6 gram of water are **0.2 moles**.

## How many atoms are in 6.5 moles of zinc?

The Mole 1) How many zinc (Zn) atoms in 5.16 moles of Zn? Atom = Mole / 6.0221415E+23. 6.5 moles 6.02 x 1023 atoms = **3.9 x 1024 atoms 1 mole** 2.

## How many moles of hydrogen are needed for 100 grams of water?

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1 mole of water requires 1 mole of hydrogen (H2) and 0.5 moles of oxygen (O2). This requires **100/18 moles** of hydrogen. As the molar mass of hydrogen is 2, it requires 200/18 = 100/9 g of hydrogen. It requires 100/9 g of hydrogen gas and 800/9 g of oxygen gas to make 100 g of water.

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

It is equal to Avogadro’s number (NA), namely 6.022 x10^{23}. 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 5.4 gram of water?

5.4 grams H20 * (**1 mole** H2O / 18 grams H2O) gives the number of moles of water. Call this X. Note that units come out to “moles H2O”. X moles H2O * (6.02*10^23 molecules H2O / mole H2O) is your answer.

## How do I calculate moles?

**How to find moles?**

- Measure the weight of your substance.
- Use a periodic table to find its atomic or molecular mass.
- Divide the weight by the atomic or molecular mass.
- Check your results with Omni Calculator.

## What is the formula for moles to grams?

In order to convert the moles of a substance to grams, you will need to **multiply the mole value of the substance by its molar mass**.

## How many moles is 36 grams water?

We know that the molecular mass of water is $18g/mol$. One can calculate the number of moles in a substance using the above formula. Hence, the number of moles in $36g$ of water is **two moles**.