Murray

How many calories does it take to evaporate 1 gm of water at 37.5 degrees Centigrade

How do I do this ? Calculate the age of a plant sample that shows about one-eigth of the carbon 14 of a living sample. The half-life of carbon-14 is about 5760a I don't have the notes on how to do this one... Help

Whooo Hooooo I found the formula and how to use it ..... no need to answer the question .. thanks