Physics, 30.08.2019 23:30, irenecupcake3467
Alaboratory technician drops a 72.0 g sample of unknown solid material, at a temperature of 80.0°c, into a calorimeter. the calorimeter can, initially at 11.0°c, is made of 187 g of copper and contains 203 g of water. the final temperature of the calorimeter can and contents is 39.4°c. what is the specific heat of the unknown sample? give your answer in units of j/kg.°c.
Answers: 3
![q_1=-[q_2+q_3]](/tpl/images/0213/3390/74013.png)
![m_1\times c_1\times (T_f-T_1)=-[m_2\times c_2\times (T_f-T_2)+m_3\times c_3\times (T_f-T_2)]](/tpl/images/0213/3390/411ef.png)
= specific heat of unknown sample = ?
= specific heat of water = 
= specific heat of copper = 
= mass of unknown sample = 72.0 g = 0.072 kg
= mass of water = 203 g = 0.203 kg
= final temperature of calorimeter = 
= initial temperature of unknown sample = 
= initial temperature of water and copper = 
![0.072kg\times c_1\times (39.4-80.0)^oC=-[(0.203kg\times 4186J/kg^oC\times (39.4-11.0)^oC)+(0.187kg\times 390J/kg^oC\times (39.4-11.0)^oC)]](/tpl/images/0213/3390/83692.png)
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Alaboratory technician drops a 72.0 g sample of unknown solid material, at a temperature of 80.0°c,...
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