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## How do you find the mass when given moles?

If mass is given in kilograms (kg), multiply it by 1,000 to give a mass in **grams** (g). Substitute in the values and solve the equation to find moles of substances (mol).

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Calculating the Moles of a Pure Substance (n=m/M)

we know the mass with units of | grams (g) |
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we know the molar mass with units of | grams per mole (g mol^{–}^{1}) |

## How do u calculate mass?

Mass is always constant for a body. One way to calculate mass: **Mass = volume × density**. Weight is the measure of the gravitational force acting on a mass.

## How do you calculate relative formula mass?

Relative atomic masses can be used to find the relative formula mass of a compound. To find the relative formula mass (M _{r}) of a compound, **you add together the relative atomic mass values (A _{r} values) for all the atoms in its formula**.

## What does n m/m mean?

n = m/M n is the **amount of substance**, in moles, mol. m is the mass of the substance, in grams, g. M is the molar mass of the substance (the mass of one mole of the substance) in g mol-1. Molar masses: These. will be given in.

## What is mass maths?

**A measure of how much matter is in an object**. … Mass is commonly measured by how much something weighs. But weight is caused by gravity, so your weight on the Moon is less than here on Earth, while the mass stays the same.

## How do you convert kg to mass?

Fw = m * 9.8 m/s^2. Fw = 30 kg * 9.8 m/s^2 = 294 N. To change from weight to **mass divide by gravity** (9.8 m/s^2).

## Is Relative Formula Mass the same as molar mass?

The molar mass of a substance is the mass of one mole of that substance. It is equal to: … the relative formula mass or M _{r} in grams for molecules and compounds.