Chemistry, 05.07.2019 23:10, rebecabosca
Acylinder with a movable piston contains 2.00 g of helium, he, at room temperature. more helium was added to the cylinder and the volume was adjusted so that the gas pressure remained the same. how many grams of helium were added to the cylinder if the volume was changed from 2.00 l to 4.50 l ? (the temperature was held constant.)
Answers: 3
 (At constant temperature and pressure)  
= initial volume of gas = 2.00 L
= final volume of gas = 4.50 L
= initial number of moles = 0.5 moles
= final number of moles = ?
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Acylinder with a movable piston contains 2.00 g of helium, he, at room temperature. more helium was...
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