card f: a student performs an experiment with chalk and vinegar and the following reaction occurs: caco3 +…

card f: a student performs an experiment with chalk and vinegar and the following reaction occurs: caco3 + 2ch3cooh → ca(ch3coo)2 + h2o + co2 2.2g 13.6g 7.4g? 2.1g what was the mass of water in this chemical reaction?

card f: a student performs an experiment with chalk and vinegar and the following reaction occurs: caco3 + 2ch3cooh → ca(ch3coo)2 + h2o + co2 2.2g 13.6g 7.4g? 2.1g what was the mass of water in this chemical reaction?

Answer

Answer:

6.3g

Explanation:

Step1: Apply law of conservation of mass

According to the law of conservation of mass, the total mass of reactants equals the total mass of products. The mass of reactants is $m_{reactants}=2.2g + 13.6g=15.8g$. The mass of known products is $m_{known - products}=7.4g+2.1g = 9.5g$.

Step2: Calculate mass of water

Let the mass of water be $m_{H_2O}$. Then $m_{reactants}=m_{known - products}+m_{H_2O}$. So $m_{H_2O}=m_{reactants}-m_{known - products}=15.8g - 9.5g=6.3g$.