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leva [86]
3 years ago
11

Which is not needed for a hurricane to form?

Chemistry
2 answers:
ad-work [718]3 years ago
6 0
Land is not needed for a hurricane to form
aliya0001 [1]3 years ago
5 0

Answer:

strong cold front

Explanation:

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Ammonium nitrate is an ingredient in cold packs used by sports trainers for injured athletes. Calculate the change in temperatur
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Answer:

See explanation

Explanation:

First, we need to use the correct expression:

Q = m*Cp*ΔT  (1)

Q = n*ΔH  (2)

These are the 2 expressions to calculate heat or energy.

Now, we want to know the change of temperature of the nitrate in water after being added, so with the innitial data of nitrate, we can calculate heat using the second expression. First, we need to calculate moles with the molecular mass:

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n = 42/80.1 = 0.52 moles

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Q = 0.52 * 25.7 = 13.364 kJ or 13,364 J

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m = 250 + 42 = 292 g

now, solving for ΔT:

-13,364 = 292 * 4.18 * ΔT

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ΔT = -10.95 °C

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