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
patriot [66]
3 years ago
15

What is the molarity of 4 mol of naoh dissolved in 2 l of water?

Chemistry
2 answers:
mestny [16]3 years ago
5 0
Molarity of a solution is defined as the number of moles of solute in 1 L of solution.
here we are given 4 mol of NaOH to be dissolved in 2 L of water
the number of moles of NaOH in 2 L of water - 4 mol
therefore number of NaOH moles in 1 L of water - 4/2 = 2 mol of NaOH
there are then 2 mol of NaOH in 1 L

therefore molarity of solution is 2 mol/L
kirill115 [55]3 years ago
5 0

Answer:

The answer is 2 MoI Apx answer

You might be interested in
How many salt and water would you use to prepare 10% salt solution?
tatuchka [14]

Answer:

We can make 10 percent solution by volume or by mass. A 10% of NaCl solution by mass has ten grams of sodium chloride dissolved in 100 ml of solution. Weigh 10g of sodium chloride. Pour it into a graduated cylinder or volumetric flask containing about 80ml of water.

Explanation:

have a good day

4 0
2 years ago
Which group on the periodic table would have zero electronegativity because they have a full octet?
bija089 [108]
The group on the periodic table that would have 0 electronegativity due to the fact that their valence shell is full, i.e, have a full octet would be the inert or noble gases. They have a total of 8 electrons in their valence shell and are thus inert and cannot strongly attract electrons toward itself, from neighbouring atom electrons as it does not need to.
3 0
3 years ago
Given the balanced equation representing a reaction:
sleet_krkn [62]
4Al(s) + 3O2(g) --> 2Al2O3(s)    This is the balanced.
From the equation:

 4 moles of Al required 3 moles of O2 to produce 2 moles of Al2O3
 
3 moles of O2 reacted with 4 moles of Al to produce 2 moles of Al2O3
1 mole of O2 reacted with 4/3 moles of Al to produce 2/3 moles of Al2O3  (Divide by 3)
4.5 moles of O2 reacted with (4/3 *4.5) moles of Al to produce (2/3*4.5) moles of Al2O3

4.5 moles of O2 reacted with 6moles of Al to produce  3moles of Al2O3

(3) is the answer.  6 mol of Al.
7 0
3 years ago
Calculate the pH of the following simple solutions:
IceJOKER [234]

Answer :

(1) pH = 1.27

(2) pH = 13.35

(3) The given solution is not a buffer.

Explanation :

<u>(1) 53.1 mM HCl</u>

Concentration of HCl = 53.1mM=53.1\times 10^{-3}M

As HCl is a strong acid. So, it dissociates completely to give hydrogen ion and chloride ion.

So, Concentration of hydrogen ion= 53.1\times 10^{-3}M

pH : It is defined as the negative logarithm of hydrogen ion concentration.

pH=-\log [H^+]

pH=-\log (53.1\times 10^{-3})

pH=1.27

<u>(2) 0.223 M KOH</u>

Concentration of KOH = 0.223 M

As KOH is a strong base. So, it dissociates completely to give hydroxide ion and potassium ion.

So, Concentration of hydroxide ion= 0.223 M

Now we have to calculate the pOH.

pOH=-\log [OH^-]

pOH=-\log (0.223)

pOH=0.65

Now we have to calculate the pH.

pH+pOH=14\\\\pH=14-pOH\\\\pH=14-0.65=13.35

<u>(3) 53.1 mM HCl + 0.223 M KOH</u>

Buffer : It is defined as a solution that maintain the pH of the solution by adding the small amount of acid or a base.

It is not a buffer because HCl is a strong acid and KOH is a strong base. Both dissociates completely.

As we know that the pH of strong acid and strong base solution is always 7.

So, the given solution is not a buffer.

5 0
3 years ago
Send Message
Veronika [31]

Answer:co2

Explanation:

7 0
3 years ago
Other questions:
  • Solid aluminum (AI) and oxygen (O_2) gas react to form solid aluminum oxide (Al_2O_3). Suppose you have 7.0 mol of Al and 9.0 mo
    7·1 answer
  • A compression, at a constant pressure of 140 kPa, is performed on 4.0 moles of an ideal monatomic gas (Cv = 3/2 R). The compress
    10·1 answer
  • Calculate the enthalpy change,,ΔH=∑ Hp - ∑ HR for the following reaction using equations 1, 2 C graphite(s) --&gt; C diamond(s)
    10·1 answer
  • I know this isn't the subject of math, but nobody can answer it in math and I need help with the steps because I need to turn it
    15·1 answer
  • Which of the following methods uses the decay of atomic particles in an object to find its exact age? A. Fossil dating B. Geolog
    11·1 answer
  • In order for plants to go through photosynthesis, they must use
    6·1 answer
  • At what phase of the cell cycle do the chromosomes coil up tightly?
    11·1 answer
  • Which of the following elements is represented by the above graphic​
    11·1 answer
  • Which atomic particles have no charge? ​
    9·1 answer
  • What is the laws of chemical combination?​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!