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What is the final temperature of 25.0 grams of water at 22.0 degrees Celsius after it absorbs 454 J of heat?

User Zerochill
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1 Answer

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Final answer:

The final temperature of 25.0 grams of water after absorbing 454 J of heat is approximately 26.34°C, calculated using water's specific heat capacity of 4.184 J/g°C.

Step-by-step explanation:

The final temperature of 25.0 grams of water after absorbing 454 J of heat can be calculated using the specific heat capacity of water, which is 4.184 J/g°C.

The formula to find the temperature change (ΔT) when a certain amount of heat (q) is added is q = mcΔT,

where m is the mass of the water and

c is the specific heat capacity.

So, to find the final temperature (T_f), you would rearrange the formula to ΔT = q/(mc) and then add the ΔT to the initial temperature (T_i), which gives you

T_f = T_i + ΔT.

Using the values provided:

ΔT = 454 J / (25.0 g × 4.184 J/g°C)

= 454 J / 104.6 J/°C

= 4.34°C.

Therefore, the final temperature is 22°C + 4.34°C ≈ 26.34°C.

User Jonathan Hussey
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