Calculate the amount of heat needed to increase the temperature of 250 g of water from 20.0 ºC to 46.7 ºC.

a 28000 J

b - 13751 J

c - 28000 J

d 6675 J

e 13751 J

The amount of heat needed to increase the temperature of 250 g water from 20 c to 46.7 c is calculated as follows

Q = MC delta T, where

Q = heat = ?

M = mass = 250 g

C = specific heat capacity of water = 4.186 j/g c

delat T = change in temperature = 46.7 - 20=26.7 c

Q = 250 g x4.186 j/g/c x26.7 c = 27941.55 j which is approximate to

28000 j (answer A)