conservation quick check\nwhich of the following equations demonstrates the law of conservation of mass? (1…

conservation quick check\nwhich of the following equations demonstrates the law of conservation of mass? (1 point)\n○ (ch_4 + o_2\rightarrow co_2 + h_2o)\n● (ch_4 + o_2\rightarrow c + 2h_2o)\n○ (ch + o_2\rightarrow co_2 + h_2o)\n○ (ch_4 + o_2\rightarrow co_2 + ho)

conservation quick check\nwhich of the following equations demonstrates the law of conservation of mass? (1 point)\n○ (ch_4 + o_2\rightarrow co_2 + h_2o)\n● (ch_4 + o_2\rightarrow c + 2h_2o)\n○ (ch + o_2\rightarrow co_2 + h_2o)\n○ (ch_4 + o_2\rightarrow co_2 + ho)

Answer

Explanation:

Step1: Recall law of conservation of mass

The law states that mass is neither created nor destroyed in a chemical reaction. So, the number of atoms of each element on the reactant side must equal the number of atoms of that element on the product side.

Step2: Analyze first equation

For $CH_4 + O_2\rightarrow CO_2+H_2O$, on the reactant side: 1 C, 4 H, 2 O. On the product side: 1 C, 2 H, 3 O. Not balanced.

Step3: Analyze second equation

For $CH_4 + O_2\rightarrow C + 2H_2O$, on the reactant side: 1 C, 4 H, 2 O. On the product side: 1 C, 4 H, 2 O. Balanced.

Step4: Analyze third equation

For $CH+O_2\rightarrow CO_2 + H_2O$, $CH$ is not a common - known stable compound formula. Also, atom counts don't match.

Step5: Analyze fourth equation

For $CH_4+O_2\rightarrow CO_2 + HO$, $HO$ is not a correct chemical formula. Also, atom counts don't match.

Answer:

$CH_4 + O_2\rightarrow C + 2H_2O$