Question

16 multiple choice 1 point ca(oh)₂ + h₂so₄ → caso₄ + 2h₂o 140g? 165g 32g how many grams of h₂so₄ were used in the reaction? 133 57 32 25

Explanation:

Step1: Apply the law of conservation of mass

According to the law of conservation of mass, the total mass of reactants equals the total mass of products in a chemical reaction. Let the mass of $H_2SO_4$ be $x$ grams. The mass of reactants is $140 + x$ grams, and the mass of products is $165+32$ grams.

Step2: Set up the equation

$140 + x=165 + 32$

Step3: Solve for $x$

$x=(165 + 32)-140$
$x = 57$

Answer:

57