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Answer:
CO2 should be 50.88 g
Explanation:
CH4 + 2 O2 --> CO2 + 2 H2O
First, find the moles of CH4:
Molar Mass of CH4 (formular mass):
12+1*4=16 g/mol (actually just use the atomic mass in your periodic table to add them up)
Then we can find how many moles in CH4 = 18.5÷16=1.15625 mol
As we know 1 mole of methane(CH4) makes 1 mole of CO2, so if 1.15625 moles of methane is reacted, 1.15625 moles of CO2 will be made.
So the moles of CO2 is 1.15625 moles.
Calculate the mass of CO2:
Molecular mass: 12+16*2=44 g/mol
Mass=44*1.15625=50.88 g (cor. to 2 d.p.)