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
devlian [24]
1 year ago
8

What is the molarity of a solution containing 14.6 g of KCl in 281 mL of KCl solution?

Chemistry
1 answer:
lesya [120]1 year ago
4 0

Answer:

0.698 M.

Explanation:

Let's remember the concept of molarity: The molarity (M) of a solution is the number of moles of solute dissolved in one liter of solution. To calculate the molarity of a solution, divide the moles of solute by the volume of the solution expressed in liters, like this:

Molarity\text{ \lparen M\rparen=}\frac{moles\text{ of solute}}{liter\text{s of solution}}=\frac{mol}{L}.

To find the moles of solute (KCl, in this case) we have to convert 14.6 g of KCl to moles using its molar mass which is 74.5 g/mol, like this:

14.6\text{ g KCl}\cdot\frac{1\text{ mol KCl}}{74.5\text{ g KCl}}=0.196\text{ moles KCl.}

Now, let's convert 281 mL to L. Remember that 1 L equals 1000 mL:

281\text{ mL}\cdot\frac{1\text{ L}}{1000\text{ mL}}=0.281\text{ L.}

The final step is to replace the data that we obtained in the molarity formula:

Molarity=\frac{0.196\text{ moles}}{0.281\text{ L}}=0.698\text{ M.}

The answer would be that the molarity of the solution is 0.698 M.

You might be interested in
175 mL of a 1.6 M solution of KCl is diluted to a new volume of 1.0 L. What is the new concentration of the solution?
kupik [55]

Answer:

b. .28 M KCI

Explanation:

Use the dilution formula.

C₁V₁ = C₂V₂

C₂ = C₁V₁/V₂

C₂ = 1.6*0.175 / 1.0

C₂ = 0.28

6 0
3 years ago
WHICH STATE OF MATTER IS THIS: PARTICLES VIBRATE AND CHANGE POSITION
SVETLANKA909090 [29]

Answer: Gas. Gas vibrates and move freely at high speeds.

Explanation:

4 0
4 years ago
Read 2 more answers
Look at this compound, why does magnesium has dative and covalent bonds with nitrogen? ...?
HACTEHA [7]
<span>The solid lines between N and Mg are actually ionic bonds. N has 5 valence electrons (2 of which are paired). Of the 3 that are unpaired, 2 are part of covalent bonds with adjacent carbon atoms. N accepts an extra electron to complete its octet, but gets a formal charge of -1. This allows for formation of an ionic bond with Mg, which is +2. Two of these charged N atoms therefore neutralize the charge of the central Mg. As for the coordinate (dative) covalent bonds, Mg has empty orbitals - the ionic bonds with the charged N atoms give it only 4/8 possible valence electrons.


The other two N atoms (dotted lines) have a formal charge of 0 since they form three covalent bonds with adjacent carbon atoms, but they still have a lone pair. Therefore, just to improve stability, each of these N atoms can "donate" its lone pair to Mg in order to complete its octet.


I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!



</span>
4 0
4 years ago
What is a product of science
ddd [48]

Answer:

A product in science is a substance that is formed when two or more chemicals react.

Explanation:

When a chemical reaction takes place, a new substance is often created from the atoms or molecules of the original substances. There are often multiple products formed in a reaction.

6 0
3 years ago
HELP HELP HELP HOW MANY GRAMS OF SUGAR CAN DISSOLVE IN 100 GRAMS OF WATER HEATED TO 40 CELCIOUS 60 POINTS OFFERED
Colt1911 [192]

your answer would be C. 240g

3 0
3 years ago
Other questions:
  • Fluorine (F) has seven electrons in its outermost shell. Fluorine _____.
    9·2 answers
  • Explain how chemical change differs from a physical change
    5·2 answers
  • Determine the molarity for each of the following solution solutions:
    12·1 answer
  • Select all that apply. Which of the following measurements have 3 significant figures? 0.0882 m 0.8820 m 8,820 m 882.0 m
    8·2 answers
  • When it is spring in China, it is ______ in South America
    13·1 answer
  • Based on the description of geothermal energy, how does magma convection aid in the production of geothermal energy?
    15·2 answers
  • A moving object collides with a stationary object. Which of the following statements is true according to Newton’s third law of
    14·1 answer
  • Which object has more thermal energy? Assume that all objects are at the same temperature.
    5·2 answers
  • Which best describes a hydrate?
    8·2 answers
  • Why is mining for coal a long-term concern?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!