Is it possible for a balloon with an initial internal pressure equal to 250.0 kpa to naturally expand to four times its initial volume when the temperature remains constant and atmospheric pressure is at 101.3 kpa

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.)

What metric units would you use to measure the thickness of a key

Answer asap : ( a. how does mucus prevent the entry of pathogens? b. describe two ways white blood cells protect us from pathogens.