This is your assignment: How much energy would it take to change 15 grams of ice at -5 °C to steam at 110 °C?
Its five steps please show work

Idon't see the pic?

Ireally don’t know this

Radon-222 or rn-222 has a half-life of 3.82 days. to determine the fraction of an original sample of rn-222 that remains unchanged after 7.646 days, we calculate the amount of rn-222 remaining after 7.646 days and divide it with the original amount. using 1 gram as a basis and using half-life calculation methods, we can determine that  0.249 or 0.25  grams of rn-222 will remain, and thus the fraction remaining is 0.25 or 1/4.