Helpo pls rnn only have 5 min The percent
composition of an
unknown substance is
75.42 % Carbon, 6.63
% Hydrogen, 8.38 %
Nitrogen, and 9.57 %
Oxygen. If its molar
mass is 668.0 g/mole
what is its molecular
formula?

The electromagnetic force acts between what

You are making a solution of calcium chloride dissolved in water. you add solid, stir, and it dissolves. you add just a spatula tip full, stir, and the solid does not dissolve. how could you describe the solutions before and after adding the spatula tip amount

Categorize them by metal, nonmetal, in periodic tableductilenon-ductilemalleableoften gain electrons easilygood conductorpoor conductorcan be liquidselements