1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
QveST [7]
3 years ago
5

Ammonia (A) diffuses through a stagnant layer of air (B), 1cm thick, at 25 ºC and 1 atm total pressure. The partial pressures of

ammonia on the two sides of the air layer are: PA0=0.9 atm and PAl=0.1 atm respectively. Air is none diffusing. Calculate the molar flux of ammonia. DAB= 0.214 cm2 /s
Chemistry
1 answer:
sergey [27]3 years ago
8 0

Answer:

The value N_A = 0.192 \ mol \cdot m^{-2} \cdot \  s

Explanation:

From the question we are told that

     The thickness of the air is z_2 - z_1  =  1 \ cm  =0.01 \  m

      The temperature is  T = 25^oc = 25 +273 = 298 \  K

     The total pressure is  P_T = 1 atm  = 1.01325*10^{5} \  Pa

      The partial pressure of Ammonia first side is  P_{AO} = 0.9 \ atm = 0.9 * 1.01325*10^{5} = 91192.5 \  Pa

      The partial pressure of Ammonia to the second side is P_{A} = 0.1 \ atm  = 0.1 * 1.0325*10^{5} = 10132.5 \ Pa

 Rate of flow of ammonia is  

          D_{AB} = 0.214 \ cm/s = \frac{0.214 }{10000} = 2.14 *10^{-5} \  m^2 /s

Generally the  molar flux of ammonia is mathematically represented as

         N_A = \frac{D_{AB} * P_T }{RT(z_2 -z_1)} * ln [\frac{P_T - P_{Al}}{P_T - P_{AO}} ]

Here R is the gas constant with value  

         R = 8.314 \ m^3 \cdot Pa \cdot mol^{-1} \cdot K

             N_A = \frac{2.14 *10^{-5}  * 1.01325*10^{5}  }{8.314 *298 (0.01)} * ln [\frac{1  - 0.1}{1 - 0.9} ]

=>           N_A = 0.192 \ mol \cdot m^{-2} \cdot \  s

You might be interested in
Which of the following is an example of a chemical change?
Alchen [17]
All of the above :)
6 0
4 years ago
Read 2 more answers
How could an increase in industrial activity in developing nations contribute to global climate change?
netineya [11]
If there is an increase in industrial activity, that means that more heat will be dissipated to the atmosphere in the form of carbon dioxide. Industrialization requires fuel to keep the processes on the go. At the end of the pipeline, the combustion of fuel would result to carbon dioxide released to the atmosphere. That's how it is contributing to the global climate change through the greenhouse effect.
6 0
3 years ago
5. A hollow glass sphere has a volume of 350 mL and
Rina8888 [55]

Explanation:

Given that,

Volume of a hallow glass sphere is 350 mL

Specific gravity is 1.252

We need to find the weight of the sphere. The ratio of density of substance to the density of water is called specific gravity.

The density of water is 1 g/mL

\text{specific gravity}=\dfrac{\text{density of substance}}{\text{density of water}}\\\\SG=\dfrac{m}{V\times \rho_w}\\\\m=SG\times V\times \rho_w\\\\m=1.252\times 350\ mL\times 1\ g/mL\\\\m=438.2\ \text{grams}

We know that,

1 pound = 453.592 grams

So,

m = 0.97 lbs

So, the weight of the sphere is 0.97 lbs or 0.97 pounds.

5 0
4 years ago
A car is traveling with an initial velocity of 15 m/s when the driver decides to go faster by accelerating at 5 m/s2 for 10 seco
Ilia_Sergeevich [38]

Answer: Time needed: 2.5 s

Distance covered: 31.3 m

Explanation:

I'll start with the distance covered while decelerating. Since you know that the initial speed of the car is 15.0 m/s, and that its final speed must by 10.0 m/s, you can use the known acceleration to determine the distance covered by

 

on one side of the equation and solve by plugging your values

To get the time needed to reach this speed, i.e. 10.0 m/s, you can use the following equation

Explanation:

7 0
3 years ago
At 25 °C and 775 Torr, carbon dioxide has a solubility of 0.0347 M in water. What is its solubility at 25 °C and 1190 Torr? g
aniked [119]

Answer:

g the day off and I will be there at work and I will be there at work and I will be there you go again with the person

Explanation:

no one is here yet but I can tomorrow if you have time can you come to my house and I will be there at work and I will be there at work and I will be there at work and I will be there

6 0
3 years ago
Other questions:
  • The first letter of a chemical symbol must be
    14·1 answer
  • When aluminum is placed in concentrated hydrochloric acid, hydrogen gas is produced. 2 Al ( s ) + 6 HCl ( aq ) ⟶ 2AlCl3 ( aq ) +
    14·1 answer
  • How many orbitals in third shell are axial a) 9 b)6 c)5 d)37
    7·2 answers
  • What is the engine piston displacement in liters of an engine whose displacement is listed as 490 in^3?
    14·1 answer
  • Can someone help me?
    12·1 answer
  • Why the catalytic and optical properties of nanomaterial are different from bulk material
    9·1 answer
  • Oxycodone (C18H21NO4), a narcotic analgesic, is a weak base with pKb = 5.47. Calculate the pH of a .00250 M oxycodone solution.
    15·1 answer
  • If the half-life of Carbon-14 is 5700 years, how many years would it take a sample to decay from 1 gram to 31.3 mg
    12·1 answer
  • How are superheavy elements made?​
    15·1 answer
  • Calculate the ph of a solution formed by mixing 250. 0 ml of 0. 15 m nh4cl with 200. 0 ml of 0. 12 m nh3. the kb for nh3 is 1. 8
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!