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 .

the answer would be b i believe

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.