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Art [367]
3 years ago
8

For the energy diagram of the chemical reaction depicted here, which of the following is the best conclusion?

Chemistry
2 answers:
My name is Ann [436]3 years ago
8 0

Answer: B The reaction is exothermic

Eddi Din [679]3 years ago
5 0

Answer:

B

Explanation:

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If 1,079.75 Joules of heat are added to 77.75 grams of water, by how many degrees Celsius would the water increase? Assume water
djyliett [7]

Answer:

If 1,079.75 Joules of heat are added to 77.75 grams of water, by 3.32 degrees Celsius the temperature of  water will increase

\Delta T=3.32 C^{0}

Explanation:

q = mC\Delta T

Here , q = heat added / removed from the substance

m  = mass of the substance taken

\Delta T = Change in temperature

C = specific heat capacity of the substance

In liquid state the value of C for water is :

4.18 J/gC^{0}

Given values :

q = 1079.75 J

m = 77.75 gram

Insert the value of C, m , q in the given equation

q = mC\Delta T

on transposing ,

\Delta T=\frac{q}{mC}

\Delta T=\frac{1079.75}{77.75\times 4.18}

\Delta T=3.32 C^{0}

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Which property is shared between liquids that are used in thermometers.
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