Analysis of a hydrocarbon showed that is contained 14.4% hydrogen and 85.6% carbon by weight. What is its simplest (empirical) formula? Question 12 options:

CH

CH2

CH3

C2H3

C2H5

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

Describe the properties of sodium, chlorine, and sodium chloride

Water is a highly important natural resource. which of these would be the best method to conserve water? a) drinking bottled water b) monitoring the ph of rivers c) treating and re-using wastewater d) testing nitrate levels in groundwater