What is the total amount of heat needed to change 2250 g of silver at 200.0°C to 0.0°C? The specific heat of silver is 0.129 J/g∙°C

The total amount of heat needed to change 2250 grams of silver at 200 ºC to 0ºC is 5805 J.

Explanation:

The melting point of silver is 961.8 ºC, meaning that heat released is entirely sensible. Therefore, the amount of heat released by the sample of silver (), measured in joules, is determined by the following formula:

(1)

Where:

- Mass, measured in kilograms.

- Specific heat of silver, measured in joules per grams-degrees Celsius.

, - Initial and final temperatures, measured in degrees Celsius.

If we know that , , and , then the heat received by the sample of silver is:

The total amount of heat needed to change 2250 grams of silver at 200 ºC to 0ºC is 5805 J.

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