Question

A sample of iron is heated from 15 Celcius to 45 Celcius and absorbs 1680 joules of energy. what is the mass of iron involved?

Answer 1

The mass of the iron involved is 1500 g.

Step-by-step explanation:

To determine the mass of the iron involved, we can use the formula Q = mcΔT, where Q is the energy absorbed by the iron, m is the mass of the iron, c is the specific heat capacity of iron, and ΔT is the change in temperature.

Rearranging the formula, we have m = Q / (cΔT).

Substituting the given values into the formula, we find m = 1680 J / (0.108 cal/g°C * 48.3°C).

Converting the units, we get m = 1500 g.