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12345 [234]
3 years ago
5

Please Help! Hurry!

Chemistry
2 answers:
Rasek [7]3 years ago
6 0

Answer:

A. the jar covers

Explanation:

An independent variable is what you, as the scientist, changes.

nydimaria [60]3 years ago
3 0

Answer: a

Explanation:

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T_f = 25.05°C

Explanation:

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since we have our molar mass and mass of dimethylphthalate ;we can determine the number of moles as;

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= 21.84 kJ

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21.84 KJ = (6.15 kJ/^0C * T_f) - (6.15 kJ/^0C*21.5^0C)

21.84 KJ = (6.15 kJ/^0C * T_f) - 132.225 kJ

21.84 KJ + 132.225 kJ = (6.15 kJ/^0C * T_f)

154.065 kJ = (6.15 kJ/^0C * T_f)

T_f = \frac{154.065kJ}{6.15kJ/^0C}

T_f =25.05°C

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