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
Lerok [7]
2 years ago
12

|

Chemistry
1 answer:
lilavasa [31]2 years ago
6 0

1.66 M is the concentration of the chemist's working solution.

<h3>What is molarity?</h3>

Molarity (M) is the amount of a substance in a certain volume of solution. Molarity is defined as the moles of a solute per litres of a solution. Molarity is also known as the molar concentration of a solution.

In this case, we have a solution of Zn(NO₃)₂.

The chemist wants to prepare a dilute solution of this reactant.

The stock solution of the nitrate has a concentration of 4.93 M, and he wants to prepare 620 mL of a more dilute concentration of the same solution. He adds 210 mL of the stock and completes it with water until it reaches 620 mL.

We want to know the concentration of this diluted solution.

As we are working with the same solution, we can assume that the moles of the stock solution will be conserved in the diluted solution so:

n_1= n_2  (1)

and we also know that:

n = M x V_2

If we replace this expression in (1) we have:

M_1 x V_1= M_2 x V_2

Where 1, would be the stock solution and 2, the solution we want to prepare.

So, we already know the concentration and volume used of the stock solution and the desired volume of the diluted one, therefore, all we have to do is replace the given data in (2) and solve for the concentration which is M_2:

4.93 x 210 =  620 xM_2

M_2 = 1.66 M

This is the concentration of the solution prepared.

Learn more about molarity here:

brainly.com/question/19517011

#SPJ1

You might be interested in
Convert 1.350 atm into mmHg
Daniel [21]

Answer:

1026

Explanation:

Pressure

1.35

Standard atmosphere

=

1026

Millimetre of mercury

Formula

multiply the pressure value by 760

7 0
3 years ago
Read 2 more answers
5.0 x 10^24 molecules equal how many liters
Whitepunk [10]
You can youse a calculator or ask a teacher

4 0
3 years ago
Look at the image shown.
Charra [1.4K]
Where’s the image sorry this isn’t much help but I don’t know what to answer if I can’t see the image
6 0
2 years ago
Several atmospheric gases contribute to global warming: carbon dioxide, methane, and nitrous oxide. Considering this, which choi
tia_tia [17]

Answer:

A

help u and it's A

Explanation:

3 0
3 years ago
Explain how the amount of pressure created by a smaller piston can be the same as the pressure created by a larger piston?
Lelu [443]

Answer:

Pascal's principle : Pressure applied to an enclosed fluid is transmitted undiminished to every part of the fluid, as well as to the walls of the container.

A common application of this is a hydraulic lift used to raise a car off the ground so it can be repaired at a garage. A small force applied to a small-area piston is transformed to a large force at a large-area piston. If a car sits on top of the large piston, it can be lifted by applying a relatively small force to the smaller piston, the ratio of the forces being equal to the ratio of the areas of the pistons.

Explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • A propane torch is lit inside a hot air balloon during preflight preparations to inflate the balloon. What condition of the gas
    12·1 answer
  • NH3 + H2O <br> How do I balance this
    7·1 answer
  • If 156 grams of chromium react with an excess of oxygen, as shown in the balanced chemical equation below, how many grams of chr
    13·1 answer
  • Question seven. Please HELP!
    8·1 answer
  • When electrons are filling energy levels, the lowest energy sublevels are occupied first. This is ____________.
    8·2 answers
  • Aqueous sulfuric acid H2SO4 reacts with solid sodium hydroxide NaOH to produce aqueous sodium sulfate Na2SO4 and liquid water H2
    8·1 answer
  • Answer this ......,..,.,.,.,.,.,.,..,.,.,.,.,.z.z.,.,.,.,..,.,.,.,.,.,.,.,.,..,​
    9·1 answer
  • Usually potassium hydrogen phthalate is kept very pure. But Stu Dent thinks the bottle of potassium hydrogen phthalate has been
    7·1 answer
  • Why melting and boiling points can be used as a way to check purity?​
    12·1 answer
  • Hello summer roses~<br>help me with these questions ​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!