29g of copper pellets are removed from a 300 Celsius oven and immediately dropped into 100 mL of water at 22 Celcius in an insulated cup.

What will the new water temperature be?

Question

29g of copper pellets are removed from a 300 Celsius oven and immediately dropped into 100 mL  of water at 22 Celcius in an insulated cup.

What will the new water temperature be?

anonymous · Answer

Since the cup is insulated, there is no heat loss. Therefore the heat absorbed by the water must equal the heat given up by the pellets.

anonymous · Answer

so shall i use the specific heat capacity of copper?

anonymous · Answer

Yes. ...and of water:
$Delta Q_w=m_w c_w\Delta T_w$ and $Delta Q_{c}=m_{c} c_{c}\Delta T_{c}$

anonymous · Answer

ok so Q for water will b the same as Q for copper?

anonymous · Answer

Right: the heat absorbed by the water must equal the heat given up by the pellets.

anonymous · Answer

and the mass of water will the same as copper?

anonymous · Answer

how will i find the mass of water?

anonymous · Answer

You know the volume, so you need the density of water.

anonymous · Answer

ohk great!

anonymous · Answer

thanku very much i got it right!! thank u:))