nadineadel2 nadineadel2

31-12-2015
Chemistry

Answered

PLEASE HELP with detailed explanation of the formulas**

A 10.0-gram sample of H2O(l) at 23.0°C absorbs 209 joules of heat. What is the final temperature of the H2O(l) sample?

(1) 5.0°C

(2) 18.0°C

(3) 28.0°C

(4) 50.0°C

Verified Answer :

Billymkhoi Billymkhoi

01-01-2016

Q= mcΔT
⇒ 209 J= 10.0 g 4.18 J/(gC)* (x- 23.0 C)
⇒ ...
⇒ x= 28.0 C

(3) 28.0°C is the correct answer.

Hope this helps~

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