# The laughing gas weighs 33 g. determine its amount of substance.

September 27, 2021 | education

| m (laughing gas) = 33 g.

Let’s determine the amount of laughing gas. We write down the solution.

We write down the formula for laughing gas: N2O.

Next, we use the following formula.

n = m / M.

Where n is the amount of substance.

m is the mass of the substance.

M is the molar mass of the substance.

M (N2O) = 14 * 2 + 16 = 28 + 16 = 44 g / mol.

n = 33/44 = 0.75 g / mol.

This means that the amount of laughing gas substance is 0.75 mol.

Answer: the amount of substance is 0.75 mol.

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