# Problem: Which quantity or quantities must always be the same on both sides of a chemical equation? Check all that apply.a. the number of molecules of each kindb. the sum of the masses of all substances involvedc. the number of moles of each kind of moleculed. the number of atoms of each kind

82% (82 ratings)
###### FREE Expert Solution
• For this problem, let's use this hypothetical equation as a guide: 2A + B→ 2AB

• Analyzing the choices:

• a. the number of molecules of each kind (False since we are forming a different kind of molecule in the product side compared to the reactant)

82% (82 ratings)
###### Problem Details

Which quantity or quantities must always be the same on both sides of a chemical equation? Check all that apply.

a. the number of molecules of each kind

b. the sum of the masses of all substances involved

c. the number of moles of each kind of molecule

d. the number of atoms of each kind

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Law of Conservation of Mass concept. You can view video lessons to learn Law of Conservation of Mass Or if you need more Law of Conservation of Mass practice, you can also practice Law of Conservation of Mass practice problems .

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Based on our data, we think this problem is relevant for Professor Finnegan's class at WSU.