Question
In a chemical reaction, 200 grams of reactant A is combined with 50g of reactant B. Both A and B react to completion. How much will the total product weigh?
- 300 grams
- 400 grams
- 250 grams
- 100 grams
Hint:
Mass can neither be created nor destroyed.
The correct answer is: 250 grams
- In a chemical reaction, 200 grams of reactant A is combined with 50g of reactant B to form 250 g of product.
- As we are aware, according to the law of conservation of mass, mass can neither be created nor be destroyed. It explains that the mass of reactants is always equal to the mass of products.
- Since the chemical reaction consists of 200 g of A and 50 g of B on the reactant side, it shows that 250 g of the product will be formed to obey this law of conservation of mass.
Since there is no quantity left in the products side, the calculation of total mass of product become easier.
Related Questions to study
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