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1. ### Which of the following gases has a density of 5.40 g/L at STP? H2S, SO3, CF2Cl2?

The molar mass of the gas: 5.40 × 22.4 ≈ 120.96 g/mole molar mass of H₂S = 34 g/mole molar mass of SO₃ = 80 g/mole molar mass of CF₂Cl₂= 120.91 g/mole CF₂Cl₂ is that gas.

1 Answers · Science & Mathematics · 02/12/2014

2. ### Convert following to STP?

STP is 101.325 kP and 0C. 1) P1V!/T1 = P2V2...

1 Answers · Science & Mathematics · 19/11/2014

3. ### Which answer would be the most correct. Physics.?

isothermal means pV=p'V' then p'=p(V/V')=2p adiabatic means pV^γ=p'V'^γ then p'=p(V/V')^γ=(2^γ)p γ>1 for any gas [monoatomic or poliatomic] then the correct answer is (a)

2 Answers · Science & Mathematics · 28/09/2014

4. ### Physics(Pressure) problems?

...for g or density could get it closer to the standard 101,325Pa. at STP., but you get the idea. 2) Radius of pedal cylinder = sqrt.(10/pi) = 1.784cm. (160...

1 Answers · Science & Mathematics · 22/09/2014

5. ### Physics question?

Use combined gas law 101.3 kPa x 642 ml / 273 = P2 x 235 / 308 solve for P2 and multiply by 1000 to get Pa

2 Answers · Science & Mathematics · 23/08/2014

6. ### How to calculate the instantaneous rate of transfer between air and ice as a function of surface area at STP?

...and would need information like humdity, air velocity, and air temperature. (Since STP is 0C, the heat flow will negative assuming the air has...

1 Answers · Science & Mathematics · 13/08/2014

7. ### density question with balloon?

V = (4/3)πR³ = 523.6 m³ Lifting force (kgf) = V*[ρa - ρh] = 534 kg

1 Answers · Science & Mathematics · 15/07/2014

8. ### PHYSICS QUESTION I PROMISE I WILL CHOOSE THE BEST ANSWER. JUST PART B?

From pV = nRT, we see that p is directly proportional to n when V and T are held constant. We don't even need to find n -- p = 1atm * (25.5+25.4)/25.5 = 2 atm = 2.02e5 Pa It looks to me like you have the right number for...

1 Answers · Science & Mathematics · 18/06/2014

9. ### What is the density of carbon dioxide gas at -15°C and 728 torr?

...22.089974641 Density = 44 ÷ 22.089974641 = 1.990973072 g/L At STP, density = 44 ÷ 22.4 = 1.964285714 g/L The density increased slightly...

2 Answers · Science & Mathematics · 15/06/2014

10. ### Pressure question physics?

STP (Standard Temp and Pressure) implies P1...

1 Answers · Science & Mathematics · 28/04/2014