When wood burns in the presence of oxygen, in what from is energy released?
a. water vapor
b. hydrogen
c. heat and light
d. more oxygen

What volume of a 2.00 m stock solution of naoh is needed to prepare 150. ml of 0.40 m solution?

Why do cells appear different in distilled water than they do in 10% salt water?

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