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Step2247 [10]
4 years ago
14

Josh heated a certain amount copper sulfate crystals to get 2.1g of white copper sulfate powder and 1.4 g of water .what is most

likely the mass of the blue copper sulfate that he heated and why
Biology
2 answers:
Sergeeva-Olga [200]4 years ago
7 0

2.1 g, mass of reactant changes during chemical change

yanalaym [24]4 years ago
6 0

<u>Answer:</u> The mass of blue copper sulfate is 3.5 g

<u>Explanation:</u>

Law of conservation of mass states that mass can neither be created nor be destroyed but it can only be transformed from one form to another form.

This also means that total mass on the reactant side must be equal to the total mass on the product side.

The chemical equation for the heating of copper sulfate crystals is:

CuSO_4.5H_2O\text{ (blue)}\rightarrow CuSO_4\text{ (white) }+5H_2O

Let the mass of blue copper sulfate be 'x' grams

We are given:

Mass of copper sulfate powder = 2.1 grams

Mass of water = 1.4 grams

Total mass on reactant side = x

Total mass on product side = (2.1 + 1.4) g

So, by applying law of conservation of mass, we get:

x=2.5+1.4\\\\x=3.5g

Hence, the mass of blue copper sulfate is 3.5 grams

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