4. A 300 mL sample of a gas at a temperature of 400 K exerts a pressure of exactly one atmosphere. What pressure does the gas exert when the volume
decreases to 200 mL and the temperature increases to 600 K?

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 does blood clotting prevent the entry of pathogens through cuts and wounds? answer asap,, this is due tomorrow. will mark as brainliest or whatever you call it : )

What is the equation fort the alkaline zinc/manganese dioxide cell. a) anode b)cathode c)overall equations.