A month repellent,para-dichlorobenzene ,has the composition 49.1%C,2.7%H and 48.2% Cl. its molecular mass is 147 amu. what is molecular formula?
A welder’s acetylene tank has a volume of 84.9L. It is stored at a temperature of 20.79 °C and has a pressure of 7274. kPa. How many moles of acetylene are in the tank?
A piece of metal has a density of 7.5 and a volume of 39.6 . What is its mass in grams?
QUESTION 8
If 75mL of a 2.6M solution is diluted to a final concentration of 0.9M, what is the final volume of the solution?
define the term reduction
Determine ph of 0.10M KOH solution
and a volume of 39.6 
. What is its mass in grams?