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atroni [7]
3 years ago
10

Water circulates through Earth's water cycle by changing state state its acidity its acidity its turbidity

Chemistry
1 answer:
Lana71 [14]3 years ago
3 0

Complete question is;

Water circulates through Earth's water cycle by changing its _____.

A. state

B. acidity

C. turbidity

D. composition

Answer:

A: State

Explanation:

We can talk about this by observations about the states of water in the Earth's water cycle and even nature.

For example, water changing from liquid to steam(gas) in evaporation; under certain temperatures/conditions snow undergoes sublimation directly from solid to gas and also undergoes melting from solid to liquid; water vapour in the atmosphere undergoes condensation and cooling to form rain.

Thus, we can say that water circulates through the Earth's water by changing it's state.

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<u>Given:</u>

Mass of calcium nitrate (Ca(NO3)2) = 96.1 g

<u>To determine:</u>

Theoretical yield of calcium phosphate, Ca3(PO4)2

<u>Explanation:</u>

Balanced Chemical reaction-

3Ca(NO3)2 + 2Na3PO4 → 6NaNO3 + Ca3(PO4)2

Based on the reaction stoichiometry:

3 moles of Ca(NO3)2 produces 1 mole of Ca3(PO4)2

Now,

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# moles of ca(NO3)2 = 96.1/164 = 0.5859 moles

Therefore, # moles of Ca3(PO4)2 produced = 0.0589 * 1/3 = 0.0196 moles

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Mass of Ca3(PO4)2 produced = 0.0196 * 310 = 6.076 g

Ans: Theoretical yield of Ca3(PO4)2 = 6.08 g



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