How many moles of oxygen gas are contained in a 2.0 L balloon at STP?
If someone could just answer this and explain how they did it, that would be amazing!
2006-11-07 12:40:10 · 5 answers · asked by itsallforyou 2 in Science & Mathematics ➔ Chemistry
PV = nRT
n = PV/RT
P = standard pressure(don't know which one you're picking)
V = 2 L
T = standard temp(again don't know which one you're picking)
R = constant you can decide which one you want to use at
http://en.wikipedia.org/wiki/Ideal_gas_constant
2006-11-07 12:43:08 · answer #1 · answered by feanor 7 · 0⤊ 0⤋
This question would be an "ideal gas law" problem. The ideal gas law is a formula that relates the volume and pressure of a gas as a function of the number of moles, a constant and temperature. It goes like this:
PV=nRT
P= pressure in atmospheres
V= volume in liters
n= number of moles
R=ideal gas constant (0.082058)
T= Temperature in Kelvin
so plug what you know into this equation
P= 1 atmosphere (at STP)
V= 2.0 liters
n= unknown
R= (0.082058)
T= 273 Kelvin (at STP)
so that leaves you with
(1)(2)=(n)(0.082058)(273)
Use your algebra skills to solve for n and you should have the answer!!!! It should be in the neighborhood of 0.09 moles
This could acutally be much more complicated because air is only 21% oxygen gas. I assume what you are asking is a ballon filled with pure oxygen.
2006-11-07 13:16:55 · answer #2 · answered by Millhouse 2 · 0⤊ 0⤋
Remove Your Moles, Warts & Skin Tags in 3 Days
Easily, Naturally And Without Surgery
2016-05-16 01:00:48 · answer #3 · answered by Emely 4 · 0⤊ 0⤋
Nam is the closest. STP(well-known Temperature and rigidity) makes use of the PV=nRt equation. R is the consistent that adjustments given the variables. in many situations rigidity is given in kPa(Kilo-pascals) it extremely is mostly a million atm = one 0 one.3 kPa. V is often 22.4 L. n is this style of moles got here upon via way of dividing the mass via way of the molar mass. as an social gathering, the mass of Oxygen could take delivery of as in conserving with risk 6 grams mutually as the molar mass is typically sixteen g/mol. Avogadro's quantity is 6.02 x 10^23 atoms/molecules which equals a million mole. T is typically given in Kelvin. once you're given the temperature in Celsius, then the equation is severe-high quality = C + 273.
2016-12-14 03:23:34 · answer #4 · answered by lacy 4 · 0⤊ 0⤋
ppl make things two hard...
moles (of a gas) = liters/22.4
2 liters of O2 / 22.4 = .089
2006-11-07 14:24:14 · answer #5 · answered by Anonymous · 0⤊ 0⤋