1) A compound sample contains 38.67 g of carbon, 16.22 g of hydrogen, and 45.11 g of nitrogen. What is the compound's empirical formula?

Which material produces static charge when rubbed ?

Ibeg i need 20. a reaction produces 4.93 l of oxygen, but was supposed to produce 1 mol of oxygen. what is the percent yield?

Calculate the molarity of each of the following solutions. part a) 0.12 mol of lino3 in 5.5 l of solution part b) 60.7 g c2h6o in 2.48 l of solution part c) 14.2 mg ki in 100 ml of solution