Answer to Question #138354 in General Chemistry for jason

Question

When 23 grams of methane gas combine with 42 grams of oxygen, 37 grams of water form, plus carbon dioxide. What mass of carbon dioxide is produced?

Answer 1

CH₄(g) + 2 O₂ (g) = CO₂(g) + 2 H₂O (g)

1 : 2 : 1 : 2

23g : 42g : ? : 37g

Therefore : ( 23/42) =0.5 moles

1 : 2

? : 0.5

Therefore : (0.5/2)1 =0.25 moles

If,

37g = 0.5

? = 0.25

( (37)(0.25))/0.5 = 18.5g