What type of energy transformation is taking place when natural gas is used to heat water?
a. chemical energy to thermal energy
b. thermal energy into mechanical energy
c. mechanical energy into electromagnet energy
d. electromagnet energy into chemical energy

Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.