**Contents**show

## How many moles are there in 8g of he?

Helium is a monatomic, so, the number of atoms in the He element is one. **Two moles** = $,1.204 times {10^{24}}$atoms. So, two moles or we can say eight gram of He contains $1.204 times {10^{24}}$atoms.

## How many molecules are in 8 grams of o2?

= **1.5 x 10 ^{23} molecules** contains 8 grams of O

_{2}.

## How many moles is 10g oxygen gas?

Hence, there are **0.3125 moles** of oxygen are present in 10 g of oxygen gas.

## How many molecules are there in 8g of ozone?

There are **1.00 x 1023 molecules** in 8.0 grams of ozone. The molar mass of ozone is (3)(15.999 g/mol) = 47.997 g/mol.

## Which of the following has same number of molecules as that of present in 8g of O2?

8g of O2 (0.25 mol) have the same no. of moles in 11g of CO2 (0.25 mol) and 7g of **CO** (0.25 mol). Both of them have same number of molecules.

## How do you calculate moles of oxygen?

Calculate the number of oxygen atoms in 1 mole of O2. Solution — 1 molecule of O2 = 2 oxygen atoms So, 1 mole of O2 = 2 mole oxygen atoms = 2 × 6.022 × 1023 = **12.044 ×1023 oxygen atoms**.

## 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.