A 1.00 g sample of gas occupies 250 ml at 273 k and 1.00 atm. calculate the molar mass of the gas.

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.)

Imagine that you push on a large rock. at what point does your effort change the rock’s mechanical energy?

Which of the following words describe the reality that the universe looks the same from various perspective