different student is given a 10.0g sample labeled CaBr2 that may contain an inert (nonreacting) impurity. Identify a quantity from the results of laboratory analysis that the student could use to determine whether the sample was pure.

Calculate [h+] and [oh-] for a neutral solution at this temperature. express your answers using two significant figures. enter your answers separated by a comma.

Does water ever change into a different substance in the water cycle?

The effective nuclear charge is the amount of charge experienced by an electron taking into account any shielding effects from other electrons.

Balance the equation: _Hgo * - ___02 + __Hg

What is an ion and what is an cation

How many moles of co2 are produced when 10 mol of propane (c3h8) is burned in excess oxygen?

Why are the spheres representing nitrogen and oxygen different colors

How many moles are in 16.94g of water?

Two compound samples are found to have the same mass percentages of the same elements. what can you conclude about the two samples

Sodium hypochlorite (Na xCl yO z) is the active ingredient in household bleach. A 250.0 g sample of sodium hypochlorite contains 77.2 g sodium, 119.1 g chlorine, and the remainder is oxygen. Calculate the empirical formula of sodium hypochlorite.