Zinc metal reacts with hydrochloric acid according to the following balanced equ

Question

Zinc metal reacts with hydrochloric acid according to the following balanced equation. Zn(s)+2HCl(aq)ZnCl2(aq)+H2(g) When 0.109 g of Zn(s) is combined with enough HCl to make 50.7 mL of solution in a coffee-cup calorimeter, all of the zinc reacts, raising the temperature of the solution from 21.9 C to 24.7 C.

Find Hrxn for this reaction as written. (Use 1.0 g/mL for the density of the solution and 4.18 J/gC as the specific heat capacity.)

A 32.5 g iron rod, initially at 22.7 C, is submerged into an unknown mass of water at 63.1 C, in an insulated container. The final temperature of the mixture upon reaching thermal equilibrium is 58.7 C.

What is the mass of the water?

Express your answer to two significant figures and include the appropriate units.

PLEASE EXPLAIN THROUGHLY HOW YOU GOT TO ANSWER!!! thank you!!

Explanation / Answer

Zinc metal reacts with hydrochloric acid according to the following balanced equ

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