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Category > Chemistry Posted 15 May 2017 My Price 6.00

A tank of oxygen

1.) A tank of oxygen holds 22.0 L of oxygen (O2) at a pressure of 22.0 atm . When the gas is released, it provides 390. L of oxygen.

What is the pressure of this same gas at a volume of 390. L and constant temperature?

Express your answer with the appropriate units.

 

2.) A 139-mL bubble of hot gases at 202 ∘C and 1.76 atm escapes from an active volcano.

What is the temperature, in ∘C, of the gas in the bubble outside the volcano if the new volume of the bubble is 169 mL and the pressure is 0.719 atm ?

Express your answer using two significant figures.

 

3.) Hydrogen gas can be produced in the laboratory through the reaction of magnesium metal with hydrochloric acid:

Mg(s)+2HCl(aq)→MgCl2(aq)+H2(g)

What is the volume, in liters, of H2 gas produced at 28 ∘C and 850 mmHg from the reaction of 34.0 g of Mg?

Express your answer with the appropriate units.

Answers

(15)
Status NEW Posted 15 May 2017 03:05 AM My Price 6.00

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