Answer to Question #183380 in General Chemistry for Lauren Veitz

Question

What mass of liquid water can be heated from freezing to boiling with 42.6 kJ of energy, if the specific heat of water is 4.2 J g^-1 oC^-1?

Answer 1

Freezing point of water = 0°C

Boiling point of water = 100°C

C_water = 4.2 Jg^-1°C^-1

q = m × c × ∆T

m = q/∆T × c

= 42.6/(100-0) × 4.2

= 0.01g