Question

Time Remaining: 47:05 The pressure in Denver, Colorado averages about 632 mm Hg. How many atmospheres is this? 5 points Consider two 5 L chambers. In one, there are 5.00 g Oz, and in the other there are 5.00 g He. Which has the higher pressure at room temperature? 5 points What is Standard Temperature and Pressure (STP)? 2 points MacBook Ai

Answer 1

1) 1 atm = 760 mmhg

   Pressure(P) = 632 mmhg *( 1 atm / 760 mmhg) = 0.83 atm

2) Ideal gas equation, PV = nRT

Under contant T,V conditions, Pressure(P) is directly proportional to no of moles(n).

No of mole of O2(n1) = 5/32 = 0.156 mole

No of mole of He (n2) = 5/4 = 1.25 mole

So that, He chamber having greater Pressure.

3) STP = standard temperature,pressure

Temperature = 273.15 k , Pressure = 1 atm