1. Sabendo que a massa atômica do oxigênio é igual a 16u, calcule a massa molar do ozônio (O3):
a) 48 g/mol b) 16 g/mol c) 64 g/mol d) 32 g/mol e) 128 g/mol

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

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

Which buffer would be better able to hold a steady ph on the addition of strong acid, buffer 1 or buffer 2? explain. buffer 1: a solution containing 0.10 m nh4cl and 1 m nh3. buffer 2: a solution containing 1 m nh4cl and 0.10 m nh3