Journal #23 (1/11/21) A sample of a compound contains 1.52 g N and 3.47 g 0. a) what is the percentage composition of this compound? b) How many grams of nitrogen are there in 1.57 kg of the compound? c) How many oxygen atoms are in 3.21 ng of the compound? d) If the molar mass is between 90-95 grams/mol, what is the molecular formula of this compound? Journal #24 (1/13/21) 1. How many moles of potassium chloride can be produced from 15.0 moles of barium chloride, based on the reaction: BaCl2 + K2SO4 -> BaSO4 + KCI 2.Nitrogen gas and hydrogen gas can react to form ammonia (NH2). If 75.0 g of nitrogen gas reacts with an excess amount of hydrogen, how many grams of ammonia would be produced? How many grams of hydrogen actually reacted with the nitrogen