1. Solve: When you mix two substances, the heat gained by one substance is equal to the heat
lost by the other substance. Suppose you place 125 g of aluminum in a calorimeter with
1,000 g of water. The water changes temperature by 2 °C and the aluminum changes
temperature by - 74.95 °C.
A. Water has a known specific heat capacity of 4.184 J/g °C. Use the specific heat
equation to find out how much heat energy the water gained (9).

So heat required to raise the temperature of water is given as Q = 33472 J

Explanation:

As we know that the temperature of water is increased by 2 Degree C

So here we have heat gain by the water is given by the equation

Now we know that

m = 1000 g

s = 4.184 J/g C

Now plug in all data in above equation

work: w = fd (given)

work done by chet   =50*1 = 50 j

work done by mika =40*2 = 80 j

work done by sara =30*1.5 = 45 j

work done by bill =60*0.5 = 30 j

students in order from the greatest amount of work done to the least is mika> chet> sara> bill

hence option (b) is correct.