Answer:
kJ
Explanation:
The thermochemical equation for decomposition of ammonium nitrate is:


Given mass= 50.0 kg =
(1kg=1000g)

According to stoichiometry:
1 mole of
gives = 82.1 kJ of heat
Thus
of
give =
kJ of heat
Thus
kJ of heat is evolved from the decomposition of 50.0 kg of ammonium nitrate.
Question 22: conclusion
Question 23: analyze
The addition of hydrogen carbonate to bromothymol blue turns the solution blue. Thus, option B is correct.
The balanced equation for the dissociation of bromothymol blue is:

The color of dissociated form is yellow and undissociated form is blue.
<h3>What is the final color of solution?</h3>
The addition of hydrogen carbonate results in the dissociated ions as:

The dissociation results in the increased hydrogen ion concentration. The undissociated form in the reaction mixture increases.
Thus, the color of the solution will turn blue. Hence, option B is correct.
Learn more about bromothymol blue, here:
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