Answer:
The number of calories needed is 6c.
Explanation:
The amount of energy [tex]Q[/tex] needed to raise the temperature [tex]\Delta T[/tex] of water of mass [tex]m[/tex] is
[tex]Q = mC\Delta T[/tex]
where [tex]C = 1cal/g\cdot C[/tex] is the specific heat capacity of water.
Putting in numbers into equation (1), we get:
[tex]Q = (2g)(1)(3^oC )\\[/tex]
[tex]\boxed{Q = 6\:cal }[/tex]
which is the number of calories needed.
