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
Vera_Pavlovna [14]
2 years ago
5

How many moles are present in 25.0 grams of potassium permanganate, KMnO4?

Chemistry
1 answer:
Sveta_85 [38]2 years ago
3 0

0.158 moles of KMnO4 are present in 25.0 grams of potassium permanganate, KMnO4.

<h3>NUMBER OF MOLES:</h3>
  • The number of moles in a substance can be calculated by dividing the mass of the substance by its molar mass. That is;

no. of moles = mass (g) ÷ molar mass (g/mol)

  • According to this question, there are 25 grams of potassium permanganate (KMnO4).

The molar mass of KMnO4 = 39 + 55 + 16(4) = 158g/mol

no. of moles = 25g ÷ 158g/mol

no. of moles = 0.158mol

Therefore, 0.158 moles of KMnO4 are present in 25.0 grams of potassium permanganate, KMnO4.

Learn more about number of moles at: brainly.com/question/14919968

You might be interested in
Please help me due today at 7:00pm please help giving more points please help me
kkurt [141]
The answer is 20N as when the object is accelerating at 3 m/s2 it as a force of 10N applied to it so to get to 6m/s2 3(x2) = 6 so 10(x2) = 20
6 0
3 years ago
When nitrogen dioxide (NO2) from car exhaust combines with water in the air, it forms nitric acid (HNO3), which causes acid rain
Gekata [30.6K]

Answer:

n_{HNO_3}=0.584molHNO_3

Explanation:

Hello.

In this case, given the described reaction, the formation of nitric acid turns out:

NO_2+H_2O\rightarrow HNO_3

Since two hydrogen atoms are present at the reactants we balance it as follows:

3NO_2+H_2O\rightarrow 2HNO_3+NO

In such a way, since there is a 1:2 mole ratio between water and nitric acid, the produced moles of nitric acid, turns out:

n_{HNO_3}=0.292molH_2O*\frac{2molHNO_3}{1molH_2O}\\\\ n_{HNO_3}=0.584molHNO_3

Best regards!

5 0
3 years ago
What volume (in L) of a 6.84 M.
grandymaker [24]

Answer:

0.158L

Explanation:

From the question, we obtained the following information:

C1 = 6.84 M

V1 =?

C2 = 1.84 M

V2 = 588 mL = 588/1000 = 0.588L

Using the dilution formula C1V1 = C2V2. The original volume can calculated for as follows:

C1V1 = C2V2

6.84 x V1 = 1.84 x 0.588

Divide both side by 6.84

V1 =(1.84 x 0.588) / 6.84

V1 = 0.158L

4 0
3 years ago
26. Which of the following Is a reason that Venus is not ideal for supporting life?
maxonik [38]

Answer:

It has a thick atmosphere which causes extremely high temperatures.

Explanation:

8 0
3 years ago
Is the pressure, volume, and temperature of a gas are know, which can most likely be found by using the ideal gas law?
Fiesta28 [93]

The molar amount of gas can most likely be found by using the ideal gas law. This is because the ideal gas law states pV = nRT. P, V, and T are the pressure, volume, and temperature, which are the known variables. The R stands for the Universal Constant of Gases; also known. Therefore, the unknown is n, the number of moles (molar amount) of gas, and so you would solve for n from the law.

Answer: A) The molar amount of gas

Credit to: @Edufirst

--- --- --- --- --- --- --- --- --- --- --- --- --- --- ---

there is still good to live for

8 0
4 years ago
Other questions:
  • What is a device invented in 1889 that plays circular, flat records?
    14·1 answer
  • Which represents the correct electron distribution of a transition element in the ground state?
    5·1 answer
  • Which of the following is the best explanation for a covalent bond?
    11·1 answer
  • Which of the following is considered to be a living organism?
    13·1 answer
  • Which choice is a predator? A. decomposer B. producer C. herbivore D. carnivore
    12·2 answers
  • urgent please help!!!!!! Which factors add to the greenhouse effect and are caused by human activities? Select two options. a de
    15·1 answer
  • Dating uses the properties of atoms in rocks and other objects to find their ages.
    15·1 answer
  • New research shows that a red food colouring with an R value of 0.62 (when a particular solvent and temperature are used) could
    5·1 answer
  • Which of the following is used as a thermal insulator?
    9·1 answer
  • How many grams of calcium chloride are needed to produce 10. 0 g of potassium chloride?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!