2. How many grams of water can be heated from 20.0°C to 75°C using

12500.0 Joules?

Grams of water can be heated from 20.0°C to 75°C using 12500.0 Joules = 54.3 g

Explanation:

Heat required to increase temperature

H = mcΔT

m = mass of material

C = specific heat of material

ΔT = Change in temperature.

Here we need to find how many grams of water can be heated from 20.0°C to 75°C using 12500.0 Joules

That is

H = 12500 J

Specific heat of water, C = 4186 J/kg°C

ΔT = 75 - 20 = 55

Substituting

12500 = m x 4186 x 55

m = 0.0543 kg

m = 54.3 g

Grams of water can be heated from 20.0°C to 75°C using 12500.0 Joules = 54.3 g