Asample of urea contains 1.121 g of n, 0.161 g of h, 0.48 g of c, and 0.64 g of o. what is the empirical formula of urea?

What is impossible to do with a hypothesis

Why do scientists look for patterns in the world? a. patterns can explain observations. b. patterns never change, no matter what. c. patterns are easy for scientists to detect. d. patterns are all the same, through all time.

What type(s) of intermolecular forces are expected between ch3ch2cooh molecules? dipole forces, induced dipole forces, hydrogen bonding