# Best answer: What is the mass of 3 moles of nitrogen gas?

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We are given with the moles of nitrogen (N) is 3 moles. Molar mass of nitrogen is 14 amu or 14 grams. Thus 28 grams of nitrogen occupies 22.4 litres at STP and is 1 mole. Mass in grams of 3 moles of nitrogen is 3 × 14 = 42 grams .

## What is the mass of 2 moles of nitrogen gas?

Hence, 2 moles of nitrogen atoms weigh 28g.

## What is the mass in gram of 3 mole of an?

Mass of 3 moles of n is 42.0201g.

## What is the mass of 1 mole of nitrogen mass?

Mass of one mole of nitrogen atoms is 14 g.

## What is mass in grams of 3 moles of N2?

Molecular weight of N2​=28g. ∴ 1 mole of N2​ weighs 28gm. ∴ 3 moles of N2​ weighs =3×28g=84g.

## What is the molar mass of nitrogen gas?

Answer: Mass of nitrogen in 1.5 gram / moles is 21 gram. Given :– Molar mass of nitrogen = 14 a.m.u.

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## What is the mass of 3 moles of NaOH?

A 3.0 M solution of NaOH has 3.0 moles of NaOH per liter of solution. There are 0.25 L of solution (250mL⋅1L1000mL) , so there are 0.25L⋅3.0mol/L=0.75mol of NaOH. The molar mass of NaOH is 40.0 g/mol, so there are 0.75mol⋅40.0g/mol=30g of NaOH, 30. g with the right number of significant figures.

## How many grams of nitrogen gas is present in 1 mole of nitrogen gas?

A mole of nitrogen atoms is 14 grams and a mole of nitrogen molecules 28 grams, etc. Reminder: Atoms are very small.

## What is the moles of oxygen?

Moles of a Substance and the Molecular Weight

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 many grams are in a mole of hydrogen?

An amount of any substance in grams that is numerically equal to its atomic or molecular weight in amu has been defined as one mole of that substance. By this definition, one mole of hydrogen is 2.016 grams, one mole of methane is 16.043 grams, and one mole of water is 18.015 grams.

## What is the mass of 4 mole of nitrogen atoms?

Mass of 1 mole of nitrogen atoms = 14 g. 4 moles of aluminium atoms. Mass of 1 mole of aluminium atoms = 27 g. Mass of 4 moles of aluminium atoms = (27 x 4) = 108 g.

Question 5:

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Compound Formula Elements present
3. Baking powder NaHCO3 Sodium, hydrogen, carbon, oxygen
4. Potassium sulphate K2SO4 Potassium, Sulphur, Oxygen