specific heat to energy/temp

Question

A sample of gaseous hydrogen is heated with an electrical coil. If 2.58×10³ Joules of energy are added to a 11.8 gram sample initially at 21.0 °C, what is the final temperature of the hydrogen?

Answer 1

q = mC∆T

plug in the values given in the question and solve for ∆T. Add this value to 21.0º to get the final temperature.