Question

balanced chemical equations quick check
in a chemical reaction, two molecules are rearranged to produce two new molecules reactant 1 has a mass of 12 g reactant 2 has a mass of 23 g the mass of product 1 is 15 g the mass of product 2 is____(1 point)
27 g
20 g
35 g
11 g

Explanation:

Step1: Apply the law of conservation of mass

The law of conservation of mass states that the total mass of reactants is equal to the total mass of products. So, \(m_{\text{Reactant1}}+m_{\text{Reactant2}}=m_{\text{Product1}}+m_{\text{Product2}}\)

Step2: Substitute the given values

Given \(m_{\text{Reactant1}} = 12\space g\), \(m_{\text{Reactant2}}=23\space g\), \(m_{\text{Product1}} = 15\space g\). Substitute into the equation: \(12 + 23=15+m_{\text{Product2}}\)

Step3: Solve for \(m_{\text{Product2}}\)

First, calculate \(12 + 23=35\). Then the equation becomes \(35=15+m_{\text{Product2}}\). Subtract 15 from both sides: \(m_{\text{Product2}}=35 - 15\)

Answer:

\(20\space g\)