Thermochemistry practice

Question

In a coffee cup kilometer 100.0 g of H2O and 119.1 g of HCl are mixed. The HCl had an initial temperature of 44.6°C in the water is originally at 24.6°C after the reaction to temperature of both substances is 31.3°C specific keep of water is 4.1 86J over G degree Celsius what was the specific key of HCl

Answer 1

It's a coffee cup calorimeter (not kilometer). You also have several other errors in the question.

The equation for heat is q = mC∆T

q = heat

m = mass

C = specific heat

∆T = change in temperature

heat gained by water = (100.0 g)(4.186 J/gº)(31.3 - 24.6) = 2805 J

heat lost by HCl = (119.1 g)(C)(44.6 - 31.3) = 1584C

Heat lost by HCl must equal heat gained by water, therefore...

2805 J = 1584 gº(C)

C = 1.771 J/gº

Answer 2

Use this video for an answer to a similarly solved problem.

https://youtu.be/wrQA6-SMbEY