In which of the following does nitrogen possess a -3 oxidation state?

nitrite ion

nitrate ion

ammonium ion

nitrogen dioxide

Enough of a monoprotic weak acid is dissolved in water to produce a 0.0172 m solution. if the ph of the resulting solution is 2.39 at 20 °c, determine the pka for the acid.

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?

What is the molarity of 60.0 grams of naoh dissolved in 750 milliliters of water? a) 1.1 m b) 2.0 m c) 12 m d) 75 m