Question

talaah conducts a chemical reaction and wants to know the number of hydrogen atoms in the products. hydrogen only appears in the compound 2h₂o in the reactants. how many hydrogen atoms must be in the products? there must be 2 hydrogen atoms in the products, because the total mass is conserved. there must be 4 hydrogen atoms in the products, because the total mass is conserved. there must be 6 hydrogen atoms in the products, because mass decreases from reactants to products. there must be 8 hydrogen atoms in the products, because mass increases from reactants to products.

Explanation:

Step1: Analyze the compound formula

The compound is \(2H_2O\). In one \(H_2O\) molecule, there are 2 hydrogen atoms.

Step2: Calculate hydrogen atoms in \(2H_2O\)

For \(2H_2O\), the number of hydrogen atoms is \(2\times2 = 4\). According to the law of conservation of mass in chemical reactions, the number of hydrogen - atoms in the reactants must equal the number of hydrogen atoms in the products.

Answer:

There must be 4 hydrogen atoms in the products, because the total mass is conserved.