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15. A 100 g sample of each of the following metals is heated from 352C to 450C. Which metal absorbs the lowest amount of heat
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Answer #1

15)

Q = m*C*(Tf-Ti)

m*(Tf-Ti) is same for all.

So, the metal with smallest value of C would absorb lowest amount of energy.

Specific heat is lowest for Tin

Answer: D

16)

2nd reaction = -2*1st reaction

So,

ΔH2 = -2* ΔH1

= -2*(-493.45 KJ)

= 986.9 KJ

Answer: A

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