Question

part 1 (1 point)
in a balanced chemical equation, does the number of moles of reactants always equal the number of moles of products?
yes
part 2 (1 point)
the following reaction is balanced: 2h₂(g)+o₂(g)→2h₂o(g)
how many total moles of reactants are there?
moles reactants
part 3 (1 point)
using the same equation, 2h₂(g)+o₂(g)→2h₂o(g)
how many total moles of product are there?
moles product

Explanation:

Step1: Answer Part 1

In a balanced chemical equation, the number of moles of reactants does not always equal the number of moles of products. It is the number of atoms of each element that is conserved. So the answer is no.

Step2: Calculate reactant moles for Part 2

For the reaction $2H_2(g)+O_2(g)\longrightarrow 2H_2O(g)$, the reactants are $H_2$ and $O_2$. There are 2 moles of $H_2$ and 1 mole of $O_2$. So the total moles of reactants is $2 + 1=3$.

Step3: Determine product moles for Part 3

The product is $H_2O$. From the balanced - equation, there are 2 moles of $H_2O$ as the product.

Answer:

Part 1: no
Part 2: 3
Part 3: 2