Aqueous solutions of sodium thiosulfate, na2s2o3, are used as an antidote to some snakebites. What is the concentration of sodium ions in a 0. 15msolution of na2s2o3?.

Acompound is found to contain 6.1% hydrogen and 93.9% oxygen. find it’s empirical formula.

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.

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here