5/5/25\nchemistry\n1. if i have 4.5 l of a gas at stp, how many moles of gas do i have?\nstp = 273 k and 100…

Explanation:

Step1: Recall molar - volume at STP

At STP (273 K and 100 kPa), the molar volume of a gas is $V_m = 22.7\ L/mol$.

Step2: Use the formula $n=\frac{V}{V_m}$

We know $V = 4.5\ L$ and $V_m=22.7\ L/mol$. So $n=\frac{4.5\ L}{22.7\ L/mol}$.

Step3: Calculate the number of moles

$n=\frac{4.5}{22.7}\ mol\approx0.198\ mol$

Answer:

$0.198\ mol$