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How much heat is needed to raise the temperature of 50.0 g of water from 277 K to 315 K?

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Answer:

You will need 7.953 kJ heat energy to raise the temperature of water from 277K to 315K.

Step-by-step explanation:

To calculate how much heat is needed to raise the temperature of any substance, you need:

The mass of the substance, m, which for you is 50.0 g

The temperature change that occurs, ΔT, which for you is:

Δ
T=(315-277)K=38K

The specific heat capacity of the substance, c,

For water, the value of c is 4.186J/gK

Then, this is the equation you need:


Q=mcΔT

Where Q is the heat needed

So,


Q=(50.0g)(4.186J/gK)(38K)=7953.4J=7.9534kJ

You need 7.953 kJ to raise the temperature of water from 277K to 315K.

User Fgrehm
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