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riadik2000 [5.3K]
3 years ago
15

O Previous

Chemistry
1 answer:
Ede4ka [16]3 years ago
4 0

Answer:

what is scientific model

Explanation:

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A 50.0 mL sample of gas at 20.0 atm of pressure is compressed to 40.0 atm of pressure at constant temperature. What is the new v
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Ans: Final volume = 25.0 ml

<u>Given:</u>

Initial volume V1 = 50.0 ml

Initial pressure P1 = 20.0 atm

Final pressure P2 = 40.0 atm

<u>To determine:</u>

The final volume V2

<u>Explanation:</u>

Ideal gas equation: PV = nRT

under constant temperature, T and number of moles n we have:

PV = constant

or, P1V1 = P2V2

V2 = P1V1/P2 = 20*50/40 = 25 ml.

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A beaker of 450g of water is heated from 4.0°C to 25.0°C on a hot plate. If the
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For the given reactions determine if the entropy increases or decreases.
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Entropy increases in reaction 1 due to increase in the number of particles while entropy decreases in reaction 2 due to decrease in the number of particles.

Entropy refers to the degree of disorderliness in a system. The higher the entropy, the more disorderly the system is and the lower the entropy, the less disorderly the system is. We must note that entropy increases with increase in the number of particles.

In the reaction,  2 KClO3 (s)⇌2 KCl (s)+3 O2 (g), entropy increases because one of the products is a gas and the number of particles increases from left to right. In the second reaction, CoCl2 (s)+6 H2O (g)⇌CoCl2⋅6H2O, entropy decreases because the number of particles decreases.

Learn more: brainly.com/question/14281129

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3 years ago
At which of the four labeled points on the titration curve below do you expect to find the highest concentration of hydroxide
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Answer:

D.

Explanation:

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Gravitational potential energy is a form of potential energy
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I think its c ,,,,,,,,,,,,,,,,,,,,,,,,
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