Answer to Question #60096 in Physical Chemistry for joseph orobiyi

Question

19 Calculate the $\Delta H$ value of the reaction: $$HCl + NH_3
\rightarrow NH_4Cl$$ $\Delta H^o$ values for HCl, $NH_{3}$ and
$NH_{4}Cl$ are -92.30, -80.29 and -314.4 respectively
141.8
252.88
-486.99
-141.8



20 The specific heat of silver is 0.0565 $cal/g/^{o}C$. Assuming no loss
of heat to the surroundings or to the container, calculate the final
temperature when 100 g of silver at 40 $^{o}C$ is immersed in 60 g of
water at 10 $^{o}C$.
12.6 $^o C$
25 $^oC$
16.2 $^oC$
21.6 $^oC$.