How many moles are in 15 grams of water? A.9.0 x 10^24

B.2.5 x 10^-23

C.1.2

D.083

What is the mass of sodium in 3 moles of sodium chloride

1) which of the following is the best example of a physical change? a) sugar dissolving in tea b) firefly glowing 2) in the combustion of ethane, what is/are the reactants? c2h6 + o2 ==> co2 + h2o a) c2h6 and o2 b) co2 and c2h6

Fossil fuels are organic compounds that are made from