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1. ### How many moles of gas does the cylinder contain? ?

... of moles R = gas constant = 0.08206 (atm∙L)/(mol∙K)                    8.314 L∙kPa/mol∙K...

1 Answers · Science & Mathematics · 11/03/2020

2. ### CHEMISTRY HELPP!!?

... / RT = (1.40 atm) x (226.4 L) / ((0.082057366 L atm/K mol) x (27.0 + 273.15) K) = 12.869 mol total Take a hypothetical sample...

2 Answers · Science & Mathematics · 04/03/2020

3. ### Chem prob?

... T ln Keq -4720 J/mol = -8.314 J/mol K (298 K) ln Keq ln Keq = 1.905 Keq = e^1.905 = 6.72 For this reaction, Keq = [C]/[A][B] = 6.72 Now, set up an ICE table for this reaction...

1 Answers · Science & Mathematics · 19/02/2020

4. ### Chem Arrhenius Equation--WILL GIVE BEST ANSWER?

... 1/T₂ = 3.2301 × 10⁻³ New temperature, T₂ = 310 K = 37°C ==== B. When T₁ = 273 + 25 = 298 K, k₁ = 0.0120...

2 Answers · Science & Mathematics · 13/02/2020

5. ### A 0.0125 g sample of gas with an empirical formula of CHF2 is placed in a 165 mL flask. It has a pressure of 13.7 mm Hg at 22.5 C.?

... / 760 mmHg/atm) (0.165 L) = (n) (0.08206 L atm / mol K) (295.5 K n = 0.00012266 mol Divide mass by moles to get molar...

3 Answers · Science & Mathematics · 08/02/2020

6. ### A steel cylinder holds 1.50 g of ethanol. What is the pressure of the ethanol vapor if the cylinder has a volume of 251 cm^3 ?

.../V P = 0.03256 mol (0.08206 Latm/molK) (523 K) / 0.251 L P = 5.56 atm If you need pressure in a different unit...

1 Answers · Science & Mathematics · 10/02/2020

7. ### Define STP for gases. A 5.0 mL sample of CH4 gas at 1 atm is enclosed in a gas tight syringe at 22 C. ?

Since 1982 the definition of STP has been 273.15 K and exactly 10^5 Pa. (5.0 mL) x (100 kPa / 101.325 kPa) x (273.15 K / (273.15 + 22)K) = 4.5668 mL = 4.6 mL

1 Answers · Science & Mathematics · 08/02/2020

8. ### Calculate the moles of vapor present as well as the molar mass of the vapor using the Ideal Gas Law?

...752.2 / 760 = 0.9897 atm V = 0.2159 L T = 100 + 273.15 = 373.15 K n = PV/RT n = 0.9897 atm (0.2159 L)/ 0.08206 Latm/...

2 Answers · Science & Mathematics · 08/02/2020

9. ### At what temperatures will a reaction be spontaneous if ΔH = -12.7 kJ and ΔS = +135 J/K? (Multiple Choice)?

ΔG = ΔH - TΔS At equilibrium, ΔG = 0 0 = -12700 - (T)(+135) 12700 = - (T)(+135) Do you see how T will wind up to be a negative value. Which is, of course, an impossible value. Hence, answer...

1 Answers · Science & Mathematics · 06/02/2020

10. ### How do you calculate the entropy of these 3 figures?

...the entropy k is the boltzman constant 1.38e-23 J/K W is the number of microstates...) a) W = 1 so ln 1 = 0 and S = 0 c) there are five ways of giving this arrangement...

2 Answers · Science & Mathematics · 05/02/2020

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