Question

1. when mercury oxide is heated, it forms mercury and oxygen. hgo→hg + o₂ how many grams of oxygen are formed if 45 g of mercury oxide reacts and 24 g of mercury was formed? enter numerical (only numbers) values only. grams of oxygen are formed

Explanation:

Step1: Use the law of conservation of mass

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction. So, the mass of reactants (mercury oxide) is equal to the mass of products (mercury + oxygen).
Let the mass of oxygen be \(x\) grams.
We know that mass of mercury oxide \(m_{HgO}=45\space g\), mass of mercury \(m_{Hg} = 24\space g\)
According to the law of conservation of mass: \(m_{HgO}=m_{Hg}+m_{O_2}\)

Step2: Solve for the mass of oxygen

Substitute the known values into the equation: \(45 = 24+x\)
To find \(x\), we can rewrite the equation as \(x=45 - 24\)
\(x = 21\)

Answer:

21