100 g of water is heated from 30 degree C to 50 degree C the change in its internal energy
a 8.4 k J
b 84 k J
c 2.1 k J
d 4.2k J

Question

100 g of water is heated from 30 degree C to 50 degree C the change in its internal energy 
a 8.4 k J
b 84 k J
c 2.1 k J
d 4.2k J

anonymous · Answer

@Opcode @kropot72 @Hero @inkyvoyd @Kainui @Luigi0210

schrodingers_cat · Answer

$$Q = mc \Delta T$$

shadowlegendx · Answer

@Schrodingers_Cat could you explain the formula?

schrodingers_cat · Answer

The change in heat will equal the change in internal energy.

anonymous · Answer

mc is equal to 100 kg ??

anonymous · Answer

100 x 10^-3 kg * ?

schrodingers_cat · Answer

c is the specific heat of water.

schrodingers_cat · Answer

M is mass and DeltaT is the change in temperature.

anonymous · Answer

Q = 100 X 417 x 20 
Am I put the right values ???

anonymous · Answer

@Schrodingers_Cat can you please show me your solution ?

schrodingers_cat · Answer

Q = 100(4.179)(50 -30) = 8352 J

anonymous · Answer

so in kJ it will be 8.35  right ?

schrodingers_cat · Answer

Yep :)

anonymous · Answer

Oh thank you so much ^_^ @Schrodingers_Cat

anonymous · Answer

can you help me with few more ?