One mole of oxygen gas, which has the formula O2, has a mass of 32 g and contains 6.02 X 1023 molecules of oxygen but 12.04 X 1023 (2 X 6.02 X 1023) atoms, because each molecule of oxygen contains two oxygen atoms.

## How much does 1 mole of O2 weigh?

The mass of oxygen equal to one mole of oxygen is 15.998 grams and the mass of one mole of hydrogen is 1.008 g. If we total up the gram amounts of each element in the water molecule = 15.998g/mol + 2(1.008g/mol) we get the molar mass of water = 18.014g/mol.

## How do you find the molecular weight of O2?

Molecular mass is obtained by multiplying the atomic mass of an element with the number of atoms in the molecule and then adding the masses of all the elements in the molecule. O2 is a diatomic molecule. The mass of an oxygen atom = 16 amu. ∴ Mass of O2 molecule = 2 × 16 = 32 amu.

## How many grams is 2 moles of oxygen?

per mole of oxygen. From here, the answer is simple. Just multiply 2 by 31.9988 g because there are two moles of oxygen. So, the answer is 63.9976 g ..

## How much does 1 mole of Mg weigh?

The relative masses of each element can be found on the periodic table. For example, one atom of magnesium weighs 24.31 amu (atomic mass units). However, one mole of magnesium weighs 24.31 g.

## How many moles are in 5g of O2?

The answer is 0.031251171918947. We assume you are converting between moles O2 and gram. You can view more details on each measurement unit: molecular weight of O2 or grams The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles O2, or 31.9988 grams.

## How many moles are in 64 grams of O2?

Answer. => 64 gm = 4 mole. Thus, 64 grams of oxygen contains 4 moles.

## What is the weight of O2?

15.999 u

## What is the weight of O2 required?

Therefore, the weight of oxygen required = 9628×2.8 kg = 9.6 kg.

## How do you calculate mol weight?

Key Points

- The molar mass is the mass of a given chemical element or chemical compound (g) divided by the amount of substance (mol).
- The molar mass of a compound can be calculated by adding the standard atomic masses (in g/mol) of the constituent atoms.

## How many moles are in 28 grams of O2?

›› More information from the unit converter

The answer is 31.9988. We assume you are converting between grams O2 and mole. You can view more details on each measurement unit: molecular weight of O2 or mol The SI base unit for amount of substance is the mole. 1 grams O2 is equal to 0.031251171918947 mole.

## How many moles are in 100g of oxygen?

The SI base unit for amount of substance is the mole. 1 grams Oxygen is equal to 0.062502343837894 mole.

## How many moles are in 100 grams of aluminum?

There are three steps to converting grams of a substance to moles: ▪ Step 1: Determine how many grams of a substance are in the problem. Use the periodic table to check the atomic mass, this is the number of grams per mole → 1 mole of Aluminum is 26.982 g ▪ Written as a fraction this is …

## How do I convert 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 are in 199 grams of CCl4?

We assume you are converting between grams CCl4 and mole. You can view more details on each measurement unit: molecular weight of CCl4 or mol This compound is also known as Carbon Tetrachloride. The SI base unit for amount of substance is the mole. 1 grams CCl4 is equal to 0.0065009910760895 mole.

## How do you find how many grams are in a mole?

Divide the mass of the substance in grams by its molecular weight. This will give you the number of moles of that substance that are in the specified mass. For 12 g of water, (25 g)/(18.015 g/mol) = 0.666 moles.