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## How do you find the mass of ethanol?

As you calculated in Example 1, the molecular mass of ethanol is **46.069 amu**. Because 1 mol of ethanol contains 2 mol of carbon atoms (2 × 12.011 g), 6 mol of hydrogen atoms (6 × 1.0079 g), and 1 mol of oxygen atoms (1 × 15.9994 g), its molar mass is 46.069 g/mol.

## 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 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.

## What is the formula of mole?

Avogadro’s number is a very important relationship to remember: **1 mole = 6.022×1023 6.022 × 10 23 atoms**, molecules, protons, etc. To convert from moles to atoms, multiply the molar amount by Avogadro’s number. To convert from atoms to moles, divide the atom amount by Avogadro’s number (or multiply by its reciprocal).

## How do we find atomic mass?

For any given isotope, the sum of the numbers of protons and neutrons in the nucleus is called the mass number. This is because each proton and each neutron weigh one atomic mass unit (amu). **By adding together the number of protons and neutrons and multiplying by 1 amu**, you can calculate the mass of the atom.

## Why do we convert mass to moles?

Big, because atoms and molecules are way too small to count, **so we mass large numbers of them instead**, and use molar mass to convert to the NUMBER of moles of them. This number is then used in a ratio conversion based on the mole ratios in the balanced chemical equation.