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VashaNatasha [74]
3 years ago
11

Approximately how old is the Sun?

Chemistry
2 answers:
malfutka [58]3 years ago
5 0
The answer is C. 4.6 billion years. Hoped I helped. :)
kupik [55]3 years ago
3 0
The sun is 4.6 billion years!!..!
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it is b

Explanation:

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Determine the the mass of one molecule of hydrogen sulfide gas.
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A 100.0 mL sample of 0.300 M NaOH is mixed with a 100.0 mL sample of 0.300 M HNO3 in a coffee cup calorimeter. If both solutions
Mars2501 [29]

Answer:

Qm  = -55.8Kj/mole

Explanation:

NaOH(aq) + HNO₃(aq) => NaNO₃(aq) + H₂O(l)

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Given => 100ml(0.300M) NaOH(aq) + 100ml(0.300M)HNO₃(aq)

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=> 0.03mole NaNO₃(aq) + 0.03mole H₂O(l)

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Heat of reactions comes from formation of H-Oxy bonds on formation of water of reaction and heats the 200ml of solvent water from 35⁰C to 37⁰C.

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