Ahot cup of coffee (treat it like water) rests on a windowsill. if it cools off from 90 c
down to 30 c, releasing 103,310 j in the process, how many ml (grams) of coffee is in the
cup?

Explanation:

We have to use the heat equation for this problem:

ΔT

Where:

Q=heat=103310 J

m = mass = Unknow

Cp=specific heat (of water)=4.18

ΔT= 30 ºC

Now, we have to solve for "m":

Finally, we have to convert from grams to mL using the density value .

c (diamond),

sio2 (quartz)

every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. therefore, there must be the same number of atoms of each element on each side of a chemical equation.