card b: the following reaction occurs when an effervescent tablet is inserted into water: c7h6o3 + 3h2o →…
card b: the following reaction occurs when an effervescent tablet is inserted into water: c7h6o3 + 3h2o → co2 + c7h8o4 20.0g 9.3g? 27.6g what was the mass of carbon dioxide in this reaction?
Answer
Answer:
$1.7$ g
Explanation:
Step1: Apply mass - conservation law
According to the law of conservation of mass, the total mass of reactants equals the total mass of products. The mass of reactants is $m_{reactants}=20.0\ g + 9.3\ g=29.3\ g$. The mass of products is $m_{products}=m_{CO_2}+27.6\ g$.
Step2: Solve for mass of $CO_2$
Set $m_{reactants}=m_{products}$, so $29.3\ g=m_{CO_2}+27.6\ g$. Then $m_{CO_2}=29.3\ g - 27.6\ g = 1.7\ g$.