20 g of water. specific heat of water is 4.18 J/x°C. temperature changes from
25° C to 20° C, how much heat energy (Q) moves from the water to the
surroundings?
418 Joules
4.18 J
209 J
83 J

Ithink iit might be

It is a ok  i know i have a brain functioning well.                                                                                                                                                           

Moles = mass/molar mass the molar mass of c20 = 12.011*20 = 240.22 g per mole therefore, the number of moles is 20 g / 240.22 g per mol = 0.0833 moles.

Hey : )a transition from the first energy level to the fourth energy level