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
solmaris [256]
3 years ago
7

How many times faster does hydrogen effuse than neon

Chemistry
1 answer:
Oduvanchick [21]3 years ago
7 0
1.59 times faster than does<span> an unknown gas.</span>
You might be interested in
Is H2CO3 an Arrhenius acid?
Korolek [52]
Carbonic acid.............................................
6 0
3 years ago
The solubility of KCl is 3.7 M at 20 °C. Two beakers each contain 100. mL of saturated KCl solution: 100. mL of 4.0 M HCl is add
JulijaS [17]

Answer:

a)The Ksp was found to be equal to 13.69

Explanation:

Terminology

Qsp of a dissolving ionic solid — is the solubility product of the concentration of ions in solution.

Ksp however, is the solubility product of the concentration of ions in solution at EQUILIBRIUM with the dissolving ionic solid.

Note that if Qsp > Ksp , the solid at a certain temperature, will precipitate and form solid. That means the equilibrium will shift to the left in order to attain or reach equilibrium (Ksp).

Step-by-step solution:

To solve this: 

#./ Substitute the molar solubility of KCl as given into the ion-product equation to find the Ksp of KCl.

#./ Find the total concentration of ionic chloride in each beaker after the addition of HCl. We pay attention to the amount moles present at the beginning and the moles added.

#./ Find the Qsp value to to know if Ksp is exceeded. If Qsp < Ksp, nothing will precipitate.

a) The equation of solubility equilibrium for KCL is thus;

KCL_(s) ---> K+(aq) + Cl- (aq)

The solubility of KCl given is 3.7 M.

Ksp= [K+][Cl-] = (3.7)(3.7) =13.69

The Ksp was found to be equal to 14.

In pure water KCl

Ksp =13.69 KCl =[K+][Cl-]

Let x= molar solubility [K+],/[Cl-] :. × , x

Ksp =13.69 = [K+][Cl-] = (x)(x) = x²

x= √ 13.69 = 3.7 M moles of KCl requires to make 100mL saturated solutio

37M moles/L

The Ksp was found to be equal to 14.

4.0 M HCl = KCl =[K+][Cl-]

Let y= molar solubility :. y, y+4

Ksp =13.69= [K+][Cl-] = (y)(y*+4)

* - rule of thumb

Ksp =13.69= [K+][Cl-] = (y)(y*+4)= y(4)

13.69=4y:. y= 3.42 moles/100mL

y= 34.2moles/L

8 M HCl = KCl =[K+][Cl-]

Let b= molar solubility :. B, b+8

Ksp =13.69= [K+][Cl-] = (b)(b*+8)

* - rule of thumb

Ksp =13.69= [K+][Cl-] = (b)(b*+8)= b(8)

13.69=8b:. b= 1.71 moles/100mL

17.1 moles/L

Therefore in a solution with a common ion, the solubility of the compound reduces dramatically.

8 0
2 years ago
Read 2 more answers
Advantages for building on the green hill
Minchanka [31]
I think that building on a green hill
6 0
3 years ago
Read 2 more answers
→
marin [14]

Answer:

[A]²

Explanation:

Since the formation is independent of D, D is 0 order.

Since a quadruples when it is doubled it can be written as

2A^X= 4

To find the unknown power we can assume A= 1 to make the math simple. So When a = 2 (Because you doubled it) raised to X power it will equal 4

so the unknown power is 2

Making the rate law

[a]²[b]⁰

or simply just

[A]²

8 0
3 years ago
I. Witch direction does the electric field point at a position directly west of a positive charge
RUDIKE [14]

Answer:

The answer is North

Explanation:

The direction of the field is taken to be the direction of the force it would exert on a positive test charge.

5 0
3 years ago
Other questions:
  • A mixture of sand and table salt cam be separated by filtration because the substances in the mixture differ in
    7·1 answer
  • 63<br> 84/<br> 85<br> 86<br> 87/<br> 88<br> 891<br> 901<br> 911<br> 921
    13·1 answer
  • Calculate the mass of NaF that must be added to 300ml if a 0.25m HF solution to form a buffer solution with a ph of 3.5​
    6·1 answer
  • If 1.0 mole of CH4 and 2.0 moles of Cl2 are used in the reaction CH4 + 4Cl2 =&gt; CCl4 + 4HCl then which of these statements is
    11·1 answer
  • For each reaction, calculate how many moles of the barium product you will produce using stoichiometry and the balanced reaction
    11·1 answer
  • A diagram used to show inheritance patterns and to predict the genotypes of offspring
    15·1 answer
  • 4. Uno de los valores que se destaca por
    9·1 answer
  • If a 200 kg person stands next to a 100 kg person. Which person would have a larger gravitational attraction?
    14·2 answers
  • Which organisms use cellular respiration as a way to convert energy into usable form?
    5·2 answers
  • What does the shape of the moon we see depend on? (2 points)
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!