I believe the correct answer from the choices listed above is the second option. The type of change and the explanation for the change in calcium carbonate would be that it is a <span>physical change </span>because even though a particle size change was observed, the calcium carbonate retained its original properties and was not transformed into a new substance.
23.458 g
<h3>Further explanation</h3>
Given
Reaction
H2SO4 + 2NaNO2 → 2HNO2 + Na2SO4
24.14714 g of Na2SO4
Required
mass of NaNO2
Solution
mol Na2SO4 :
= 24.14714 : 142,04 g/mol
= 0.17
From the equation, mol NaNO2 :
= 2/1 x mol Na2SO4
= 2/1 x 0.17
= 0.34
Mass NaNO2 :
= 0.34 x 68,9953 g/mol
= 23.458 g
Answer:
in short weight
Explanation:
weight is mass x gravitational pull on an object