1.
(P1V1/T1) = (P2V2/T2)
2.
mols = grams/molar mass
a) A 750-mL sample of hydrogen exerts a pressure of 822 torr at 325 K. What pressure does it exert if the temperature is raised to 475 K at constant volume?
b) Aluminum oxide, Al2O3, is used as a filler for paints and varnishes as well as in the manufacture of electrical insulators. Calculate the number of moles in 47.51 g of Al2O3.
2 answers
Answer: 1.20 x 10^3
Explanation: 822/325 = ?/475
Isolate the unknown by multiplying both sides by 475/1 (reciprocal). So you divided 822 by 325 and get 2.529230769. You take that and multiply it by 475 and get 1201, which equals1.20 x 10^3.
Explanation: 822/325 = ?/475
Isolate the unknown by multiplying both sides by 475/1 (reciprocal). So you divided 822 by 325 and get 2.529230769. You take that and multiply it by 475 and get 1201, which equals1.20 x 10^3.
1 answer