Please help! A sample of H2 was collected over water for use in future chemical analyses. A sample of 91.67 mL of H2 was collected over water at 33.77∘C. Total pressure in the collection vessel was 750.37 mmHg. (The vapor pressure of water at this temperature is 39.416 mmHg.) What was the mass of H2 collected?

Why do consumers feel warmer after eating a meal

Which statement correctly describes metallic bonds? a. they form when certain atoms lose electrons and other atoms gain electrons. b. they involve an attraction between anions and cations. they always involvpoth a metal and a nonmetal. d. they can only form between atoms of the same element. e. they form because electrons can move freely between atoms.

How are evaporation and sublimation similar? a both involve the formation of a gas. b both release energy to the surroundings. c both take place throughout a solid. d both take place at the surface of a liquid.