Answer:
The correct answer is option B.
Explanation:
In this problem we assumed that heat given by the hot body is equal to the heat taken by the cold body.
where,
= specific heat of metal =
= specific heat of coffee=
= mass of metal = x
= mass of coffee = 0.3 kg
= final temperature of aluminum metal=
= initial temperature of aluminum metal =
= initial temperature of coffee=
Now put all the given values in the above formula, we get
Mass of aluminum cubes = 0.3333 kg = 333.3 g
If mass of 1 cube is 1 gram, then numbers of cubes in 333.3 grams will be:
330 cubes of aluminum cubes will be required.