Homework Help: chemistry

Posted by Danny on Sunday, November 22, 2009 at 5:30pm.

How many calories are required to heat 25.0 g of platinum from 24.5 °C to 75°C (specific heat of platinum = 0.139 J/gK)?

1. 47 cal
2. 42 cal
3. 48 cal
4. 20 cal
5. 80 cal

Thank you.

chemistry - DrBob222, Sunday, November 22, 2009 at 8:05pm
q = m*c*delta T.
chemistry - Basil, Wednesday, November 25, 2009 at 5:14am
42cal

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