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Rina8888 [55]
3 years ago
8

What happens at a constant temperature, as time progresses?

Chemistry
2 answers:
Artist 52 [7]3 years ago
8 0
Correct answer is 4 because the phase does not change
Naddik [55]3 years ago
4 0
4. it remains in its initial phase
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How much heat (in Joules) is needed to raise the temperature of 257g of ethanol (cethanol=2.4 J/g°C) by 49.1°C?
Sonbull [250]

Answer:

Q = 30284.88 j

Explanation:

Given data:

Mass of ethanol = 257 g

Cp = 2.4 j/g.°C

Chnage in temperature = ΔT = 49.1°C

Heat required = ?

Solution:

Specific heat capacity:

It is the amount of heat required to raise the temperature of one gram of substance by one degree.

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

Now we will put the values in formula.

Q = 257 g× 2.4 j/g.°C × 49.1 °C

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1.
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Which of the following is NOT a heterogenous mixture:
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3 years ago
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