Question #5f515
1 Answer
Explanation:
What you need to do here is use the molar volume of a gas at STP to determine how many moles of gas you have in that
STP conditions are defined for a pressure of
Convert the volume given to you from milliliters to liters first
80 color(red)(cancel(color(black)("mL"))) * "1 L"/(1000color(red)(cancel(color(black)("mL")))) = "0.080 L"
So, if one mole occupies
0.080 color(red)(cancel(color(black)("L"))) * "1 mole"/(22.7 color(red)(cancel(color(black)("L")))) = "0.003524 moles"
of gas in your
M_M = "0.6 g"/"0.003524 moles" = "170.26 g/mol"
You should round this off to one sig fig, the number of sig figs you have for your values, but I'll leave the answer rounded to two sig figs
M_M = color(green)("170 g/mol")