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
satela [25.4K]
3 years ago
9

Calcular la cantidad de NaOH necesaria para preparar medio litro de disolución 2,5 N. (Dato: peso molecular del NaOH = 40 g/mol)

.
Chemistry
1 answer:
kolbaska11 [484]3 years ago
8 0

Answer:

The amount of NaOH required to prepare a solution of 2.5N NaOH.

The molecular mass of NaOH is 40.0g/mol.

Explanation:

Since,

NaOH has only one replaceable -OH group.

So, its acidity is one.

Hence,

The molecular mass of NaOH =its equivalent mass

Normality formula can be written as:Normality=\frac{mass of solute NaOH}{its equivalent mass}  * \frac{1}{volume of solution in L} \\

Substitute the given values in this formula to get the mass of NaOH required.

2.5N=\frac{mass of NaOH}{40g/mol} *\frac{1}{1L} \\mass of NaOH=2.5N*40gmol\\                         =      100.0g

Hence, the mass of NaOH required to prepare 2.5N and 1L. solution is 100g

You might be interested in
Write a ground state electron configuration for each neutral atom
Gre4nikov [31]

Answer:

Pb[lead] [Xe]4f^145d^106s^26p^2

U[uranium] 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 5s^2 4d^10 5p^6 6s^2 4e^14 5d^10 6p^6

7s^2 5f^4

This notation can be written in core notation or noble gas notation by replacing the

1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 5s^2 4d^10 5p^6 6s^2 4e^14 5d^10 6p^6

7s^2 5f^4

with the noble gas [Rn].

[Rn]7s25f4

N[nitrogen] The full electron configuration for nitrogen is 1s^2 2s^2 2p^3.

Ti[titanium] Ti2+:[Ar]3d^2

Ti:1s^2 2s^2 2p^6 3s^2 3p^6 3d^2 4s^2

1s^2 2s^2 2p^6 3s^2 3p^5 = 17 electrons

(1) electron gain will result to a

negative charge (−), and

(2) electron loss will result to a positive charge (+),

1s^2 2s^2 2p^6 3s^2 3p^6 = 18 electrons

Hg[mercury] You should then find its atomic number is 80. It has a Xe core, so in shorthand notation, you can include [Xe]instead of

1s^2 2s^2 2p^6 3s^2 3p^6 3d^10 4s^2 4p^6 4d^10 5s^2 5p^6,

for 54 electrons. For the 6th row of the periodic table, we introduce the 4f orbitals, and proceed to atoms having occupied 5d orbitals. We, as usual, have the ns orbitals, and n=? for the 6th period?

Mercury has a regular electron configuration. It becomes:

[Xe]4f145d106s2

Explanation:

socratic.org helped me! I'm really sorry if this is wrong!

6 0
2 years ago
Indicators change color in acids or bases. What are the colors of the pH balance
lozanna [386]

Answer:

}

the color of the pH balance is dark blue

Explanation:

A pH indicator corresponds to a substance that measures the pH of the solution in question. in the case of neutral substance the color that the solution takes is dark blue, if it is acidic it turns pink or red and basic of a green tone. Some examples of indicators: phenolphthalein, bromophenol blue, methyl red, among others.

8 0
3 years ago
Okay #PlatoFam. I need help!!!
Vikki [24]
-2 for O
-1 for F
0 for N2
+1 for Li
+3 for Fe
6 0
3 years ago
Read 2 more answers
If you have a cup of water at 35 degrees Celsius, and a bath tub of water at 35 degrees Celsius which will melt the most ice and
ZanzabumX [31]
The bathtub of water would melt the most ice because it has a larger area
8 0
2 years ago
How can mass and energy behave in an open system
algol13
An open system<span> is a system that has external interactions.</span>
3 0
3 years ago
Other questions:
  • What Structure keeps harmful chemicals out of the animal cells
    13·2 answers
  • Stars were classified first by the strength of the hydrogen lines in their spectra, and then by temperature. Which arrangement o
    14·1 answer
  • How many atoms of gold are in a pure gold coin weighing 12.0g?
    14·1 answer
  • If you feed 100 kg of N2 gas and 100 kg of H2 gas into a<br> reactor. What is the excess reactant?
    9·1 answer
  • An ion has a charge of 2- and 18 electrons.
    14·1 answer
  • Which weighs more 10g of iron or 10g of water
    11·2 answers
  • this is the term used to describe magma that has left earth's interior usually through the force of a volcano
    14·2 answers
  • Over the years, the thermite reaction has been used for years to welding railroad nails, in cendiary bombs, and to ignite solid
    8·1 answer
  • What do we do to increase the surface area of solid reactants to high rate of reaction?​
    8·1 answer
  • 1. Write the word equation for the reaction occurring between lead nitrate and sodium chloride. 2. From your answer in 1 write a
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!