Question

How many oxygen molecules are in 3. 36 l of oxygen gas at stp.

Answer 1

Answer:

9.03 × 10²² oxygen molecules.

Explanation:

We want to determine the number of oxygen molecules in 3.36 L of oxygen gas at STP.

Recall that at STP, for any gas, it has a volume of 22.4 liters per mole.

Additionally, recall that there are 6.02 × 10²³ substances in one mole of a substance.

With the given value, hence multiply:

$\displaystyle \begin{aligned} 3.36\text{ L O _2 } & \cdot \frac{1\text{ mol O _2 }}{22.4\text{ L O _2 }}\cdot \frac{6.02\times 10^{23}\text{ molecules O _2 }}{1 \text{ mol O _2 }} \\ \\ &= 9.03\times 10^{22} \text{ molecules O _2 }\end{aligned}$

In conclusion, there are aobut 9.03 × 10²² oxygen molecules in 3.36 L of oxygen as at STP.