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Vesna [10]
2 years ago
9

Valerie wants to examine the properties of a thick liquid but is finding it difficult to pour the liquid into a beaker. She need

s to finish her investigation before the end of class. Which method will allow her to pour the liquid easily?
boiling the liquid vigorously
applying heat to the liquid
placing the liquid in the refrigerator
mixing the liquid with another solution
Chemistry
1 answer:
cricket20 [7]2 years ago
4 0

Answer:

B. applying heat to the liquid

Explanation:

i took the test and got this question correct. also, i believe that by applying heat to the liquid it will become thinner & easier to pour.

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H3PO4 + Ca(OH)2 → Ca(H2PO4)2 + H2O
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Given question is incomplete. The complete question is as follows.

Balance the following equation:

H_3PO_4 + Ca(OH)_2 \rightarrow Ca(H_2PO_4)_2 + H_2O

Answer: The balanced chemical equation is as follows.

2H_3PO_4 + Ca(OH)_2 \rightarrow Ca(H_2PO_4)_2 + 2H_2O

Explanation:

When a chemical equation contains same number of atoms on both reactant and product side then this equation is known as balanced equation.

For example, H_3PO_4 + Ca(OH)_2 \rightarrow Ca(H_2PO_4)_2 + H_2O

Number of atoms on reactant side:

H = 5

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Number of atoms on product side:

H = 6

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O = 9

Ca = 1

In order to balance this equation, we will multiply H_3PO_4 by 2 on reactant side and we will multiply H_2O by 2 on product side. Hence, the balanced chemical equation is as follows.

2H_3PO_4 + Ca(OH)_2 \rightarrow Ca(H_2PO_4)_2 + 2H_2O

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