Question

A 200.0 g copper block absorbs 2.34 × 10^3 J of heat to raise its temperature by 30.0 K. What is the specific heat of copper?
Is it 234 something?

Answer 1

@greenleaf800073

Answer 2

\[\Delta T\]=30K
mass = 200g
Q = 2340J

C = 2340J/(200g * 30K)
C = .39 J/g * K

Answer 3

T = change in temperature
Q = applied energy
C = specific heat
C = Q/(mass * T)

Answer 4

awesome

Answer 5

Heat added = specific heat x mass x (t final - t initial)

2340J = specific heat * 0.2 kg * (50K - 20K)

Cu specific heat = 0.39 J /g C

Answer 6

great!

Answer 7

A 500.0 g metal block absorbs 3.25 × 103 J of heat to raise its temperature by 50.0 K. What is the substance?

Answer 8

is this one also asking for specific heat?

Answer 9

Heat added = specific heat x mass x (t final - t initial)
3250 J = specific heat * 0.5 kg * ( 70K - 20K)
specific heat = 0.13 J /g C

Looking at a table, Tungsten has 0.134 J /g C , specific heat

Answer 10

Sorry ..i mean lead, using your chart

Answer 11

Since it is easy to find the specific heat with the formula above, you then take that number calculated and compare it to the chart you posted

Answer 12

awesome thanks!! :)

Answer 13

@roadjester

Answer 14

its the one about the 500 g metal block

Answer 15

with the substance table

Answer 16

what is the variable you're unsure of?

Answer 17

is it 0.13 J/ g x C or 0.13 j/Kg. K?

Answer 18

/Kg x K

Answer 19

he used 0.5 kg so i was curious

Answer 20

was the original answer correct or was the unit supposed to be written with the kg x K? because on the table there are two ways of writing it at the top

Answer 21

looks like this might take some time and its 2am where i live so i can just come back in a few hours

Answer 22

It depends,
As long as you are consistent and have a unit of energy divided by a unit of mass and unit of temperature, it's correct.