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1. ### Developing ODE from data?

...C_atm is the atmospheric concentration, we would model this as: dC(t)/dt = -k*(C(t) - C_atm) where k is some positive rate constant. Note that the...

2 Answers · Science & Mathematics · 06/08/2019

2. ### Ideal Gas Law Chemistry?

...atm) x (8 L) / ((3 mol) x (0.082057338 L atm/K mol)) = 81.24 K So answer c, although no more than one significant digit is justified. 2. ...

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

3. ### A sample of helium gas has a pressure of 1.7 atm at 18◦C.?

(18 + 273) K x (1.91 atm / 1.7 atm) = 326.95 K = 54◦C

3 Answers · Science & Mathematics · 07/05/2019

4. ### can someone help?

... of n people chosen k at a time. C(n,k) = n! / (k! (n-k)!) C(10,3) = 10! / (3! 7!) = 120 I have trouble remembering the formula, so...

4 Answers · Science & Mathematics · 07/10/2019

5. ### Statistics Basic Probability Help?

... general formula for exactly k successes is: P(X = k) = C(n,k) * p^k * q^k n : number of trials (e.g. 5 flips) k...

1 Answers · Science & Mathematics · 14/09/2019

6. ### V1 = 240 mL, T1 = ?, V2 = 400. mL, T2 = 298 K?

(298 K) x (240 mL / 400. mL) = 178.8 K = 180 K = -94°C

3 Answers · Science & Mathematics · 21/05/2019

7. ### What Celsius temperature, T2, is required to change the volume of the gas sample in Part A (T1 = 38 ∘C , V1= 1550 L ) to a volume of 3100 L?

(38 + 273) K x (3100 L / 1550 L) = 622 K = 349°C

1 Answers · Science & Mathematics · 04/07/2019

8. ### Need help finding magnitude of K.?

from the arrhenius equation .. k = Ao exp(-Ea / RT) for 2 conditions of different ...

1 Answers · Science & Mathematics · 09/02/2020

9. ### Helium gas in a 2.00 L cylinder is under 1.15 atm pressure. At 39.1°C, that same gas sample has a pressure of 2.79 atm.?

(39.1 + 273.15) K x (1.15 atm / 2.79 atm) = 128.7 K = -144°C

1 Answers · Science & Mathematics · 21/05/2019

10. ### Chemistry Question: Convert 124.3 Fahrenheit to Celsius and to Kelvin?

...5555555.... / 2 = C 51 + 0.2777777777.... = C 51.2777777.... = C 51.28 = C K = C + 273.15 K = 51.27777.... + 273.15 K = 324.4277777.... K...

3 Answers · Science & Mathematics · 24/06/2019