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jekas [21]
3 years ago
5

How much heat is released (in calories) by a sample of Pop Tarts burned in a calorimeter if the temperature of the 100 grams of

water in the calorimeter was raised from 23.5°C to 70°C?
Chemistry
1 answer:
algol133 years ago
7 0

Answer:

19437 J

Explanation:

mass = 100 g

Initial Temperature = 23.5°C

Final Temperature = 70°C

Temperature change, ΔT = 70 - 23.5 = 46.5

Heat = ?

The parameters are related by the equation;

H = mc ΔT

where c = specific heat capacity = 4.18 J/g°C

H = 100 * 4.18 * 46.5 = 19437 J

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Answer:

Br_2

Explanation:

The compound X_2 is Br_2.

The reaction included are:

Br_2+NaCl--> No\ reaction  (because  bromine is less reactive than chlorine)

But , because of hexane the solution get dilute and its color changes to orange.

Now, NaI is added and we know Br is more reactive than I.

Therefore it replace it.

Reaction: Br_2+NaI-->NaBr+I_2

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Katena32 [7]
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swat32

Answer:

0.529

Explanation:

Let's consider the reaction A → Products

Since the units of the rate constant are s⁻1, this is a first-order reaction with respect to A.

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5 0
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What is the difference between heat of formation and heat of reaction? Give examples and units
yanalaym [24]

Answer:

The main difference between the heat of formation and heat of reaction is that heat of formation is the amount of energy either absorbed or released during the formation of a compound whereas heat of reaction is the amount of energy either absorbed or released during any chemical reaction.

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How dose mountains affect the climate of a region ?
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