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GREYUIT [131]
3 years ago
10

Which of these changes to a modern lifestyle would promote the

Chemistry
1 answer:
lidiya [134]3 years ago
7 0
I think it’s B. At least that’s what makes sense to me
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What can be said about an endothermic reaction with a negative entropy change?
zzz [600]

Answer:

d. spontaneous in the reverse direction at all temperatures.

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3 years ago
Lars is balancing equations with his study group. He is unsure about one equation because each member of the study group came up
Stells [14]

Answer:

3Ca(OH)2 + 2H3PO4 → Ca3(PO4)2 + 6H2O

Explanation:

This a proper way to balance the equation:

- Count the OH from the base (2)

- Count the H from the acid (3)

We can make 2 molecules of H₂O but we still have one more H

H₃PO₄ → dissociates in → 3H⁺  +  PO₄³⁻

Ca(OH)₂  → dissociates in → Ca²⁺  +  2OH⁻

So, to form the salt, you must have 3 Ca²⁺ to react with 2 (PO₄³⁻) to make global charge of +6/-6

Therefore, if you have 3 Ca in the salt, you may have 3 Ca in the base.

So, if you have 2 phosphate in the salt, you must have 2 PO₄³⁻ in the acid.

Now you have 6 protons in the acid (6H) and 6 (OH) in the base; in conclussion you can make 6 H₂O.

Finally the ballance equation is:

3 Ca(OH)₂  +  2 H₃PO₄  →  Ca₃(PO₄)₂  +  6H₂O

8 0
3 years ago
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What is a Pure element ?
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A substance where almost all have the same atomic number of protons
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Neutralization is a process that occurs whenever an acid reacts with a base in the mole ratios specified by the balanced equatio
labwork [276]
The factors that can determine the outcome of a "neutralization reaction" include:
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1) temperature; 

2) concentration (of the solution); 

3) type of acid used;

4) type of alkali used;

5) type of reaction; 
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3 years ago
Hi what is 100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
kogti [31]

Answer:

2e+130

Explanation:

5 0
3 years ago
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