An 80.0-gram sample of a gas was heated from 25 °c to 225 °c. during this process 346 j of work was done by the system (which was stationary), and its internal energy increased by 7765 j. what is the specific heat capacity of the gas?

If 21.2 kcals of energy is released by this reaction, how many kj does the reaction release? (1 cal 4.184 j)

The plum pudding model of the atom states that ?

Modern physics a photon emitted from an excited hydrogen atom has an energy of 3.02 electron volts. which electron energy-level transition would produce this photon? a. n=1 to n=6 b. n=2 to n=6 c. n=6 to n=1 d. n=6 to n=2 i chose b but the correct answer is d can someone tell me why? and what's the difference?