Help => Chemistry Ideal Gas Constant! HELP 10 POINTS!! Best Answer!?

given 482 milliliters of gas @ 37 degrees celsius , @ 1.3 atmospheres, how many moles of gas present? (the ideal gas constant 0.0821 l · atm/mol · k.)

a. 2.46 x 101 moles
b. 2.06 x 100 moles
c. 2.06 x 10-1 moles
d. 2.46 x 10-2 moles

given 2.4 liters of gas @ 25 degrees celsius , @ 782 torr, how many moles of gas present? (the ideal gas constant 0.0821 l · atm/mol · k , 1 atm = 760 torr.)

a. 1.01 x 10-1 moles
b. 9.14 x 102 moles
c. 7.70 x 101 moles
d. 1.20 x 100 moles

cylinder movable piston contains fixed amount of gas @ constant pressure. initially, cylinder contains 0.25 liters of air @ 0 (zero) degrees celsius. when temperature increased 35 degrees celsius, air occupy volume?

a. 0.28 l
b. 0.88 l
c. 8.75 l
d. 35.25 l


balloon containing 0.10 moles of gas has volume of 2.0 liters. if temperature , pressure remain constant, new volume when 0.40 moles of gas added balloon?

a. 0.10 l
b. 0.50 l
c. 8.0 l
d. 10.0 l

tried hard answer these question, , here answer choices.
1. 2. c 3. 4. c

answers? explanation helps me learn! thanks!

given 482 milliliters of gas @ 37 degrees celsius , @ 1.3 atmospheres, how many moles of gas present? (the ideal gas constant 0.0821 l · atm/mol · k.) a. 2.46 x 101 moles b. 2.06 x 100 moles c. 2.06 x 10-1 moles d. 2.46 x 10-2 moles given 2.4 liters of gas @ 25 degrees celsius , @ 782...

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