Question

1. a solid mass of 25g is mixed with 60g of a solution. a chemical reaction takes place and a gas is produced. the final mass of the mixture is 75g. what is the mass of the gas released? (1 pt)

Explanation:

Step1: Calculate the initial total mass

The initial total mass is the sum of the mass of the solid and the mass of the solution.
$$25 + 60=85\ \text{g}$$

Step2: Calculate the mass of the gas

According to the law of conservation of mass (mass before reaction = mass after reaction + mass of gas released). Let \(m\) be the mass of the gas. Then \(85=75 + m\). Solving for \(m\), we get \(m = 85-75\).
$$m=10\ \text{g}$$

Answer:

\(10\ \text{g}\)