What is the amount of energy needed to heat 55.0 g of water from 45°C to 67°C?

1 Answer
Apr 5, 2017

Answer:

5.8 kJ

Explanation:

Use the equation,

#Q=mcdeltaT#

where Q is heat flow (energy), m is mass, c is specific heat capcity and #deltaT# is the change in tempreture (#T2-T1#)

The specific heat capacity of water is #(4.816J/(g*C))#

#Q=(55.0 g)*(4.816J/(g*C))*(67 C -45C)#

Solve and the answer is,

5,827 J or 5.827 kJ

To 2 significant digits,

5.8 kJ