# How much does 48 grams of oxygen take?

January 14, 2021 | education

| To solve the problem, we write down given: m (O2) = 48 g

Find: V (O2) -?

Decision:

Let’s write down the formula for calculating the volume.

V = v * Vm, where

V – volume

v – amount of substance (mol)

Vm – constant molar volume, which is 22.4 l / mol

Let’s calculate the amount of substance according to the formula:

v = m / M, where

m – mass of matter

M – molar mass

M (O2) = 16 * 2 = 32 g / mol

We substitute our data into the formula for calculating the amount of substance, we get:

v = 48 g / 32 g / mol = 1.5 mol

Let’s calculate the volume of oxygen

V (O2) = 1.5 mol * 22.4 L / mol = 33.6 L

Answer: V (O2) = 33.6 l

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