Question

compare the total mass of the reactants to the total mass of the products. what choice demonstrates the law of conservation of mass? 216g ag+71g cl₂→245g agcl 28g n₂+6g h₂→34g nh₃ 56g n₂+132g o₂→216g n₂o₅ 45g mn+32g o₂→87g mno₂

Explanation:

Step1: Calculate reactant mass (Option1)

$216\ \text{g} + 71\ \text{g} = 287\ \text{g}$

Step2: Compare to product mass (Option1)

$287\ \text{g}
eq 245\ \text{g}$

Step3: Calculate reactant mass (Option2)

$28\ \text{g} + 6\ \text{g} = 34\ \text{g}$

Step4: Compare to product mass (Option2)

$34\ \text{g} = 34\ \text{g}$

Step5: Calculate reactant mass (Option3)

$56\ \text{g} + 132\ \text{g} = 188\ \text{g}$

Step6: Compare to product mass (Option3)

$188\ \text{g}
eq 216\ \text{g}$

Step7: Calculate reactant mass (Option4)

$45\ \text{g} + 32\ \text{g} = 77\ \text{g}$

Step8: Compare to product mass (Option4)

$77\ \text{g}
eq 87\ \text{g}$

Answer:

B. $28\ \text{g}\ \text{N}_2 + 6\ \text{g}\ \text{H}_2
ightarrow 34\ \text{g}\ \text{NH}_3$