1) The answer is: the mass of CO₂ is 1.58 grams and the mass H₂O of is 1.296 grams.
Balanced chemical reaction: CH₄O + 1.5O₂ → CO₂ + 2H₂O.
m(CH₄O) = 1.15 g; mass of organic compound.
n(CH₄O) = m(CH₄O) ÷ M(CH₄O).
n(CH₄O) = 1.15 g ÷ 32 g/mol.
n(CH₄O) = 0.036 mol.
2) From chemical reaction: n(CH₄O) : n(CO₂) = 1 : 1.
n(CO₂) = 0.036 mol; amount of carbon dioxide.
M(CO₂) = 44 g/mol; molar mass of carbon dioxide.
m(CO₂) = n(CO₂) · M(CO₂).
m(CO₂) = 0.036 mol · 44 g/mol.
m(CO₂) = 1.58 g; mass of carbon dioxide.
From chemical reaction: n(CH₄O) : n(H₂O) = 1 : 2.
n(H₂O) = 2 · 0.036 mol.
n(H₂O) = 0.072 mol; amount of water.
M(H₂O) = 18 g/mol; molar mass of water.
m(H₂O) = n(H₂O) · M(H₂O).
m(H₂O) = 0.072 mol · 18 g/mol.
m(H₂O) = 1.296 g; mass of water.