If temperature change by 15 degrees in celsius, how much does it change in kelvins?

Silver tarnishes as silver metal reacts with hydrogen sulfide, h2s, in the air. in this reaction, dark silver sulfide, au2s, covers the surface of silver. when silver is polished, this coating of silver sulfide can be removed from the surface. this makes the silver shiny again. enter the coefficients that balance the tarnishing reaction equation. (type 1 for no coefficient.)

How do dying stars contribute to the formation of planets

What is the work done by the electric force to move a 1 c charge from a to b?