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1. ### A helium-filled balloon at 310.0 K and 1 atm, contains 0.25 g He, and has a volume of 1.41 L.?

Δq = (20.8 J/mol K) x (0.25 g He / (4.0026 g He/mol)) x (310.0 K - 230.0 K...

1 Answers · Science & Mathematics · 10/05/2019

2. ### which of the following values does the series sigma of k=0 to infinity of 1/((4^k)k!) represent?

https://www.wolframalpha.com/input/?i=sum(1%2F(4%5E(k)+*+k!)+,+k+%3D+0+,+k+%3D+infinity) e^(1/4)

2 Answers · Science & Mathematics · 07/06/2019

3. ### Attach an object A of mass m to the left end of the spring with a spring constant k and an object B of 2m to the right end as shown?

...2 ] + 0.5k[y(t) - x(t) - a]^2 = 0.5m(v_0)^2 (v_0)^2 - (dx/dt)^2 - 2(dy/dt)^2 = (k/m)[y(t) - x(t) - a]^2 4. When dx/dt = 0 then dy/dt = v_0 / 2 Plug...

1 Answers · Science & Mathematics · 28/06/2019

4. ### What kind of Calulators do i need to use first so i can simplify the answer. Solve K= u+cb for u?

... a web site that will do it: https://www.wolframalpha.com/input/?i=solve+K%3D+u%2Bcb+for+u -------------------- K = u + cb The ...

2 Answers · Education & Reference · 04/09/2019

5. ### .210 moles of a diatomic gas are in a piston the gas dos 185J of work while 390 of heat are added what is the change in temperature?

For diatomic ideal gas U = 5/2 nRT (should be Delta on U and T) U = Q - W T = (Q-W)/(5/2 nR) = (390-185)/(5/2 0.21*3.814)

1 Answers · Science & Mathematics · 23/05/2019

6. ### What does it mean when the equilibrium constant (K )= 0? Chemistry?

...that if there was no reaction there was no value (zero or otherwise) for K either. No reaction, no K.]

3 Answers · Science & Mathematics · 11/05/2019

7. ### Nine (9.0) liters of fluorine gas is heated from 250 K to 370 K.?

... constant and cancel it .. (4) plug and chug.... remember T must be absolute.. K or R.. never °C nor °F you do that and you don't need to...

3 Answers · Science & Mathematics · 31/07/2019

8. ### For a particular reaction, ΔH = 81.95 kJ/mol and ΔS = 27.0 J/(mol·K). Calculate ΔG for this reaction at 298 K.?

ΔG = ΔH - TΔS = (81.95 kJ/mol) - (298 K) × [27.0/1000 kJ/(mol K)] = 73.90 kJ/mol

3 Answers · Science & Mathematics · 03/05/2019

9. ### What is the value of for this aqueous reaction at 298 K? A+B↽−−⇀C+DΔ°=16.83 kJ/mol?

... Δ° to J/mol and use R = 8.314 J/mol K. Then, 1.683X10^4 J/mol = - 8.314 J/molK (298...

1 Answers · Science & Mathematics · 17/07/2019

10. ### If a*b*11=x and a*b=y, then x-y=k*a*b. Find k. Show ur work plzz.?

a*b*11 = x a*b = y x = 11*y x - y = 10*y Since y = a*b, x - a*b = k*a*b i.e., x - y = k*a*b x - y = ky 10*y = ky k = 10

6 Answers · Science & Mathematics · 17/05/2019