How much heat is required to raise the temperature of a 5.75-g sample of iron (specific heat = 0.450 J/g°C) from 25.0°C to 79.8°C? a
142 J
b
700 J
c
2.54 J
d
315 J

In an energy pyramid, which level has the most available energy?

An electron moved from shell n = 2 to shell n = 1. what most likely happened during the transition? a fraction of a photon was added. a photon of energy was absorbed. a fraction of a photon was removed. a photon of energy was released.

What is the mass of 0.46 mil of mgcl2