The fahrenheit temp reading is 90 degrees on a hot summer day. What is the reading on the kelvin scale? I know the kelvin scale is the absolute scale...i'm not sure how to tackle this problem or in other words what equation to use. A 50.0 g silver spoon at 20.0 degrees is placed in a cup of coffee at 90.0 degrees C. How much heat does the spoon absorb from the coffee to reach a temperature of 89.0 degrees C? Would I use the equation Q= mc(change in)T ?I wasnt sure how to do this problem either. A 500.0 g pot of water at room temp (20.0 degrees C) is placed on a stove. How much heat is required to change this water to steam at 100.0 degrees C? Would I again use the above problems equation w/ the mass = 500.0 g? THX so much! Any ideas or tips on how to tackle these problems will help out tremendously..we just started on temperature and heat...and we're moving fast through this summer phyiscal science class.