Some Gas Problems

# Some Gas Problems - 1 The air in a Boyles J-tube occupies...

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1) The air in a Boyle’s J-tube occupies 24.8 cm 3 at 1.12 atm. If enough Hg is added to raise the pressure to 2.64 atm, what is the new volume of air in the J-tube? (assume const. T) 1) A 1-liter steel tank is fitted with a safety valve that opens if the internal pressure exceeds 1.00 x 10 3 torr. It is filled with He at 23ºC and 0.991 atm and placed in boiling water at 100ºC. Will the safety valve open? 1) A scale model of a blimp rises when it is filled with He to a volume of 55.0 dm 3 . When 1.10 mol of He is added to the blimp, the volume is 26.2 dm 3 . How many more grams of He must be added to make it rise? 1) A 438-liter steel tank is filled with 0.885 kg of O 2 . Calculate the pressure of the O 2 at 21ºC.

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1) Calculate the density of CO 2 and the number of molecules per liter of CO 2 at a) STP and b) room temperature (20°C). 1) CuO (s) + H 2(g) Cu (s) + H 2 O (g) What volume of hydrogen at 765 torr and 225ºC is needed to form 35.5 g of Cu metal from copper(II) oxide? 1)
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Some Gas Problems - 1 The air in a Boyles J-tube occupies...

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