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
Pavel [41]
3 years ago
6

What is the molality of chloride ions in an aqueous solution of magnesium chloride for which xmgcl2 is 0.01?

Chemistry
1 answer:
AfilCa [17]3 years ago
8 0
MgCl₂ ---> Mg(2+) + 2Cl(-)
0,01-x.............x.............2x

MgCl₂ ---> Mg(2+) + 2Cl(-)
0,01-x.............x.............2x
0...................0,01.......0,02

The molality of chloride ions is 0,02M.
You might be interested in
Which of the following compounds is the name of a 5 carbon Allene?
LiRa [457]
"Pent" is five, "ene" means double bonded carbon
5 0
3 years ago
If 7.4 moles of carbon dioxide is produced in this reaction, how many moles of oxygen gas would be needed?
Nimfa-mama [501]

Answer:

11.6 mol O₂

Explanation:

  • C₇H₁₆ + 11 O₂ → 7 CO₂ + 8 H₂O

In order to solve this problem we need to <u>convert moles of carbon dioxide (CO₂) into moles of oxygen gas (O₂)</u>. To do so we'll use a conversion factor containing the <em>stoichiometric coefficients</em> of the balanced reaction:

  • 7.4 mol CO₂ * \frac{11molO_2}{7molCO_2} = 11.6 mol O₂
4 0
2 years ago
A student is instructed to make 1 L of a 2.0 M solution of CaCl2 using dry salt. How should he do this?
Pachacha [2.7K]
<span>The student should follow following steps to make 1 L of </span>2.0 M CaCl₂.<span>
<span>
1. First he should calculate the number of moles of 2.0 M CaCl</span></span>₂ in 1 L solution.<span>

</span>Molarity of the solution = 2.0 M<span>
Volume of solution which should be prepared = 1 L

Molarity = number of moles / volume of the solution

Hence, number of moles in 1 L = 2 mol

2. Find out the mass of dry CaCl</span>₂ in 2 moles.<span>

moles = mass / molar mass

Moles of CaCl₂ = 2 mol</span><span>
Molar mass of CaCl₂ = </span><span>110.98 g/mol

Hence, mass of CaCl</span>₂ = 2 mol x <span>110.98 g/mol
                                     = 221.96 g

3. Weigh the mass accurately 

4. Then take a cleaned and dry1 L volumetric flask and place a funnel top of it. Then carefully add the salt into the volumetric flask and finally wash the funnel and watch glass with de-ionized water. That water also should be added into the volumetric flask.

5. Then add some de-ionized water into the volumetric flask and swirl well until all salt are dissolved.

<span>6. Then top up to mark of the volumetric flask carefully. 
</span>
</span>
7. As the final step prepared solution should be labelled.
4 0
2 years ago
Why do we not know yet if we live in multiverse
kherson [118]

The people of he world believe and they don't believe.

I,myself, think we do land don't live in multiverse.

Why: Because in science I hear that there are many universes out there that need to b explored.

Not: Because if we did, don't you think that Astronauts and the U.S. would try and find different universes.

I hope I helped you!:)

4 0
3 years ago
The rate constant of a reaction is 6.90 à 10â5 l/mol·s at 195°c and 6.00 à 10â3 l/mol·s at 258°c. what is the activation ene
kap26 [50]
<span>TAG: YOUR IT!!!!

It's pretty funny you opened this because......... over the next 4 days you will:

1. Have someone fall in love with you

2.Find a $20 on the ground

3.Go out with the person you like

4.Your best friend will get you a very nice gift

BUT first you have to fwd this! *Send to 10 ppl in the next 143 minutes. If you break the chain you'll have problems with:

-Relationships '

-your job/school your family for 5 years!!! ?? </span>
5 0
3 years ago
Other questions:
  • Use complete sentences to differentiate between acids and bases on the basis of taste. Give an example of each type.
    11·2 answers
  • Materials of low mass are combined to form a substance of higher mass during ____. a. fission c. both A and B b. fusion d. neith
    14·1 answer
  • What would be your best course of action if exposed to this hazard?
    8·1 answer
  • Which of the slightly soluble salts below will be more soluble in acidic solution than in pure water?
    7·1 answer
  • Heating copper(II) oxide at 400°C does not produce any appreciable amount of Cu: CuO(s) ⇆ Cu(s) + 1 2 O2(g) ΔG o = 127.2 kJ/mol
    6·2 answers
  • 5 points<br> What do you think photosynthesis means ?
    7·1 answer
  • Studying the decay of radioactive isotopes in dead organisms helps scientists to identify fossilized remains. The ratio of C-12
    12·1 answer
  • Which is the chemical formula for a dinitrogen trioxide molecule?
    10·1 answer
  • 10 Balance the following equation: + CO2 (g) + H2O (1) → C12H24012 (s) + O2 (g)​
    11·2 answers
  • How many different bases of DNA​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!