What is the empirical formula of a compound that contains 0.783 g carbon, 0.196 g hydrogen and 0.521 g oxygen?

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

The molar mass of cu is 63.55 g/mol. the number of grams of cu produced in this reaction is

How many grams are in 1.75 mile of carbon