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kiruha [24]
3 years ago
7

Need help with these.

Chemistry
1 answer:
kakasveta [241]3 years ago
5 0
I got you bro by the power of my heart and the felling of agony my condolences go to the Siskin of Thebes
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How much heat do you need to raise the temperature of 100g of aluminum from 30 C to 150 C
SVEN [57.7K]

Answer:

Q = 10.8 KJ

Explanation:

Given data:

Mass of Al= 100g

Initial temperature = 30°C

Final temperature = 150°C

Heat required = ?

Solution:

Specific heat of Al = 0.90 j/g.°C

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = 150°C - 30°C

ΔT = 120°C

Q = 100g×0.90 J/g.°C× 120°C

Q = 10800 J       (10800j×1KJ/1000 j)

Q = 10.8 KJ

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How much pressure would 4.85 moles of He gas exert in a 4.50 L tank at 55° C?
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Answer:

29.0 atoms

Explanation:

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Myra wants to measure the pH of a sample of drinking water as accurately as possible. What method should she use?
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is that chromium on that computer ?

Explanation:

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