Question

voice level = 1 (purr aka whisper!) wer both multiple-choice questions pendently in your science notebook. emical equation for the reaction between calcium hydroxide, ca(oh)₂, and , h₂so₄, is shown. the masses of some of the reactants and products are give ns. ca(oh)₂ + h₂so₄ → caso₄ + 2h₂o 74 g ? 136 g 36 g how many grams of sulfuric acid were used in the reaction? a. 62 g b. 98 g c. 36 g d. 100 g ne-sentence statement to justify your response

Explanation:

Step1: Recall the law of conservation of mass

In a chemical reaction, the total mass of reactants equals the total mass of products. So, \( m_{\text{Ca(OH)}_2} + m_{\text{H}_2\text{SO}_4} = m_{\text{CaSO}_4} + m_{\text{H}_2\text{O}} \)

Step2: Substitute the known values

We know \( m_{\text{Ca(OH)}_2} = 74\ \text{g} \), \( m_{\text{CaSO}_4} = 136\ \text{g} \), \( m_{\text{H}_2\text{O}} = 36\ \text{g} \). Let \( x = m_{\text{H}_2\text{SO}_4} \). Then:
\( 74 + x = 136 + 36 \)

Step3: Solve for \( x \)

First, calculate the right - hand side: \( 136+36 = 172 \)
Then, solve for \( x \): \( x=172 - 74=98\ \text{g} \)

Answer:

B. 98 g