One way to cool a cup of coffee would be to plunge an ice-cold piece of aluminum into it. Suppose 20.00 g piece of aluminum is stored in the refrigerator at 0.0 °C and then dropped into a cup of coffee. The coffee's temperature drops from 90.0 °C to 75 °C. How many kJ of thermal energy did the piece of aluminum absorb? (Specific heat = 0.902 J/g* °C)

Iam not sure butch i thinnk it is ab

The independent variable is the type of music.the dependent variable is the pulse rate.the intervening variable is the age of the subject.if the mother does not like rock, her pulse is likely to not increase.the same might be true for the sister.the friend may like rap and gets excited.to establish cause/effect relationship, all of the subjects must be consistent.hope i .

It will appear as o2(g) as a reactant