Which formula is an empirical formula?
a) c4h10
b)c3h6
c)ch4
d)c2h6

( the numbers should be smaller )

How do scientists think that gravity affected the formation of our solar system?

How many grams of oxygen gas are contained in a 15 l sample at 1.02 atm and 28°c? show your work.

What is the chemical name of the compound na2co3? use the list of polyatomic ions and the periodic table to you answer. a. sodium carbon oxide b. sodium carbonate c. sodium(ll) carbonate d. sodium oxalate