When burning methane gas, which outcome best demonstrates the law of conservation of mass?

A.

CH4 → CO2 + H20

B.

CH4 + O2→ CO2 + 2H20

C.

CH4 + O2 → 2CO2 + 2H20

D.

CH4 + 2O2 → CO2 + 2H20

Exam number: 007170RR Exam Guidelines Exam Instructions Question 9 of 20: Select the best answer for the question 9. When all parts of a circuit are composed of conducting materials, the circuit is said to be A. open B. parallel C. closed. D.

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The substance that dissolves to make a solution is called

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A compound consists of 65.45% C, 5.492% H, and 29.06% O on a mass basis and has a molar mass of 110 g/mol. Determine the molecular formula of the compound.