Please help me!

1. The specific heat of lead is 130 J/kg .⁰C. How manyJoules of heat would be required to raise the temperature of 20.0 g of lead from 10.0 ⁰C to 15.0 ⁰C? DON'T FORGET SIG FIGS

2. How much heat is required to raise a 1.00 kg piece of ice at -20⁰C to 70⁰C to make liquid water? NO SIG FIGS!

3. How much heat (in kilojoules) is required to raise a 557.0 g piece of ice at -20⁰C to 110⁰C to make steam? NO SIG FIGS!

* NOTE for Question 2, 3: Latent heat of fusion of water is 334 kJ/kg AND latent heat of vaporization of water is2,260 kJ/kg. ALSO, specific heat capacity for water is 4.184 kJ/kg*K, for ice 2.108 kJ/kg*K, and for water vapor (steam) 1.996 kJ/kg*K. All may not be needed to solve the questions!

4. A 75.2 g block of aluminum at in initial temperature of 27.5⁰C absorbs 15.0kJ of heat. What is the final temperature of the block ?

NOTE: The specific heat of Al is 902 J/kg* ⁰C. DO NOT FORGET SIG FIGS

5. A 15.0 g block of aluminum at in initial temperature of 27.5⁰ C is put in 500. grams of water at 10.0⁰C. What is the final temperature of the block and the water? (The specific heat of Al is 902 J/kg*⁰C and for water is 4.184 kJ/kg*⁰C .) NO SIG FIGS!