In a chemical reaction two molecules with a total mass of 76 amu react to form a single molecule. What is the mass in molecule that is formed?
In a chemical reaction, the law of conservation of mass states that matter cannot be created or destroyed. That means the mass of the reactants (the substances that start the reaction) must equal the mass of the products (the substances that are formed from the reaction).
Given that there are two molecules with a total mass of 76 atomic mass units (amu) reacting to form a single molecule, the mass of that single molecule formed will also be 76 amu. This is because the total mass before and after the reaction must remain unchanged.
Therefore, the single molecule formed will have a mass of 76 amu.