Part 1: What is the heat evolved when 12.25g of the substance decreases in temperature from 75C to 55C?

Part 1:

What is the heat evolved when 12.25g of the substance decreases in temperature from 75°C to 55°C?

c.) Brass (c=0.38 J·g⁻¹·°C⁻¹)

d.) Water (c= 4.18 J·g⁻¹·°C⁻¹)

f.) Graphite (c= 8.527J·K⁻¹·mol⁻¹)

Part 2:

What are the heat capacities of the substance in part 1 as J·g⁻¹·°C⁻¹ (unless already are)?

Part 3:

What is the final temperature of the substances in part 1 when 125.5g samples (of each) evolve 2.50kJ of heat (initial temperature=90°C)?