How many oxygen molecules are present in 113.97 liters of oxygen gas at STP?

1 Answer
May 17, 2016

Approx. 5xxN_A" oxygen molecules where "N_A = "Avogadro's Number",

Explanation:

"Moles of dioxygen "=(113.97*L)/(22.41*L*mol^-1; here we use the molar volume to give us an answer in moles. Then we simply multiply this number by N_A, "Avogadro's Number":

"Number of dioxygen molecules"=(113.97*L)/(22.41*L*mol^-1)xx6.022xx10^23*mol^-1=??;.