How many molecules are there in 0.029 moles of carbon dioxide gas, CO2?
I asked this today, and the person told me to do 0.029 * 6.022e23 and my answer was wrong :/ Can someone please tell me what my answer should be!!?
Molar mass of carbon dioxide gas is
μ(CO2)= μ (C) +2 μ (O) = 12•10^-3+2•16•10^-3 = 44•10^-3 kg/mol,
Mass of 1 molecule of CO2 is
mₒ= μ (CO2)/N(A)= 44•10^-3/6.022•10^23 = 7.3•10^-23 kg.
Mass of 0.029 mol of CO2 is
M = 0.029•44•10^-3 = 1.276•10^-3 kg.
Number of moleculas is
N=M/mₒ=1.276 •10^-3/7.3 •10^-26= 1.75•10^22