How Much Heat is Released When Water Cools?

Thread starter noorjabaieh
Start date Nov 7, 2007
Tags

Energy

AI Thread Summary

To calculate the heat released when water cools, the equation Q = cmΔT is applicable, where Q is the heat energy, c is the specific heat capacity of water, m is the mass, and ΔT is the change in temperature. For 25 g of water cooling from 77°C to 50°C, the specific heat capacity (c) is 1 cal/g°C. The temperature change (ΔT) is 27°C. By substituting these values into the equation, the heat released can be determined. Understanding this equation is crucial for solving similar energy-related problems.

Nov 7, 2007

noorjabaieh

Need help on energy equations please!

Homework Statement

I need help on this homework question please i don't know how to solve it

Homework Equations

how many calories of heat are released by 25 g of water as it drops in temperature from 77 degrees c to 50 degrees c ( 1 cal= 4.18)

The Attempt at a Solution

I don't know which equation i should use
Q= cmDeltaT ?

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Nov 7, 2007

Chi Meson

Science Advisor

Homework Helper

try it.

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