how many joules of heat are absorbed by 500 g of water when its temp increases from 20 to 80c?

Question

(spt heat water=1.00cal/gc(the formula used if its Q m delta t

Answer 1

The formula used is q= m c DT

So, q = 500 g X 1 cal/gC X 60 C

Once you calculate that, you'll need to convert calories to Joules by multiplying your calories by 4.184 J/cal.

Or, you could just use the specific heat of water expressed in Joules as 4.184 J/gC.

Answer 2

500×(80-20)×1 = 30,000 cal = 30 kcal

1 kcal = 4184 J

30 kcal = 30×4,184 = 125,520 J = 125.52 kJ