Question

how many moles of cl₂ are in a container with a volume of 7.5 l at stp?

Explanation:

Step1: Recall STP molar volume

At STP, 1 mole of gas = 22.4 L.

Step2: Calculate moles of Cl₂

Moles = Volume / Molar volume = $7.5\ \text{L} / 22.4\ \text{L/mol}$.

Step3: Compute the value

$7.5 / 22.4 ≈ 0.335$.

Answer:

0.34 (rounded to two decimal places)