# Chemistry Boyles Law Calculations?

Correct the following gas volumes from the initial conditions to the new conditions. Assume temperature remains constant.

1. 50.0 cm^3 hydrogen at 97.3 kPa to 101 000 Pa

2. 500.0 cm^3 sulphur dioxide at 95.6 kPa to 101.3 kPa

3. 150.0 cm^3 nitrogen at 101.30 kPa to 120.0 kPa

4. 2.00 m^3 neon at 98.2 kPa to 150 kPa

5. A flask containing 90.0 cm^3 of hydrogen was collected under a pressure of 97.5 kilopascals. At what pressure would the volume be 70 cm^3?

6. A gas has a volume of 50.0 m^3 at standard pressure. Assuming no temperature change, what volume will the gas occupy....

a. if the pressure is doubled?

b. if the pressure is tripled?

c. if the original pressure is cut in half?

7. A gas is confined in a cylinder with a movable piston at one end. When the volume of the cylinder is 760 cm^3 the pressure of the gas is 125 pascals. When the cylinder volume is reduced to 450 cm^3, what is the pressure?

Relevance

1. 50 cm^3 times (97.3/100.0) = 48.65 cm^3

#2. 500.0 cm^3 times (95.6/101.3) = 471.9 cm^3

#3. 150.0 cm^3 times (101.3/120.0) = 126.6 cm^3

#4. 2.00 m^3 times (98.2/150) = 1.31 m^3

#5. 97.5 kPa times (90/70) = 125 kPa

#6. (a) 25 m^3 (b) 16.7 m^3 (c) 100 m^3

#7. 125 Pa times (760/450) = 211 Pa

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• Boyle's regulation says that the quantity and stress are inversely proportional (purely potential that as quickly as you improve the stress, the quantity will go down, or- once you decrease the stress, the quantity will go up) that's of course once you preserve the temperature an identical, and you do no longer substitute the style of moles. For Boyle's regulation, use this equation: P?V? = P?V? related to instruments, purely you may save instruments consistent. Use 300mL and 0.360mL for V? and V?; and use 0.4 hundred kPa for P? (considering they choose the respond if kPa) (P?)(3 hundred) = (0.4)(0.360) P? = 0.00048 kPa examine the answer to substantiate it is is clever: The preliminary stress that we discovered is clever because of the fact as a manner to compress 300mL all the way down to an rather small length of 0.36mL might require rather some stress. We went from a vulnerable stress of 0.40 8 Pa as much as a stable stress of four hundred Pa, so the quantity reduced in size considerably. Boyle's regulation: P?V? = P?V?

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