An astronaut's pack weighs 18. 5 n when she is on earth but only 3. 84 n when she is at the surface of moon.

What is the mass of the water that is being heated? it requires 2,500 joules to raise a certain amount of water (c = 4.186 jig c) from 20.0°c to 60.0°c. o 159 o 40 g o 63 g o 80 g