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
Nitella [24]
2 years ago
13

A chemist adds of a potassium permanganate solution to a reaction flask. Calculate the mass in grams of potassium permanganate t

he chemist has added to the flask. Round your answer to significant digits.
Chemistry
1 answer:
boyakko [2]2 years ago
6 0

Answer:

3.41 g

Explanation:

<em>A chemist adds 260.0 mL of a 0.0832M potassium permanganate solution to a reaction flask. Calculate the mass in grams of potassium permanganate the chemist has added to the flask. Round your answer to 3 significant digits.</em>

Step 1: Given data

Volume of the solution (V): 260.0 mL (0.2600 L)

Concentration of the solution (C): 0.0832 M (0.0832 mol/L)

Step 2: Calculate the moles (n) of potassium permanganate added

We will use the following expression.

n = C × V

n = 0.0832 mol/L × 0.2600 L = 0.0216 mol

Step 3: Calculate the mass corresponding to 0.0216 moles of potassium permanganate

The molar mass of potassium permanganate is 158.03 g/mol.

0.0216 mol × 158.03 g/mol = 3.41 g

You might be interested in
In an experiment, 132 grams of potassium bromide (KNO3) was dissolved in 100 grams of water at 70 °C in 1 minute. Which of the f
pishuonlain [190]
Answer: <span>A fewer number of particles of the sample will dissolve in 1 minute.

That is because normally the solubility and rate of solubility of the salts in water increase with the temperature. This is, the higher the temperature the higher and faster the number of particles that the water can dissolve. So, at 70°C more particles will be dissolved in water in 1 minute than at 20°C.
</span>
7 0
2 years ago
Read 2 more answers
How many moles of nitrogen trifluoride (NF3) can be produced from 9.65 mole of Fluorine gas (F2)
user100 [1]

Answer:

6.43 moles of NF₃.

Explanation:

The balanced equation for the reaction is given below:

N₂ + 3F₂ —> 2NF₃

From the balanced equation above,

3 moles of F₂ reacted to produce 2 moles of NF₃.

Finally, we shall determine the number of mole of nitrogen trifluoride (NF₃) produced by the reaction of 9.65 moles of Fluorine gas (F₂). This can be obtained as follow:

From the balanced equation above,

3 moles of F₂ reacted to produce 2 moles of NF₃.

Therefore, 9.65 moles of F₂ will react to to produce = (9.65 × 2)/3 = 6.43 moles of NF₃.

Thus, 6.43 moles of NF₃ were obtained from the reaction.

4 0
2 years ago
The density of silver is 10.49 g/cm3. if a sample of pure silver has a volume of 12.993 cm3, what would the mass?
weqwewe [10]
Multiply 10.49 by 12.993. that should be it. 130 grams ish?
6 0
3 years ago
How many anions are in 0.500 g of MgBr2
Oksana_A [137]

<u>Given:</u>

Mass of MgBr2 = 0.500 g

<u>To determine:</u>

Number of anions in 0.500 g MgBr2

<u>Explanation:</u>

Molar mass of MgBr2 = 24 + 2 (80) = 184 g/mol

Moles of MgBr2 = 0.500 g/184 g.mol-1 = 0.00271 moles

Based on stoichiometry-

1 mole of MgBr2 has 1 mole of Mg2+ cations and 2 moles of Br- anions

Therefore, 0.00271 moles of MgBr2 will have: 2 * 0.00271 = 0.00542 moles of Br-

Now,

1 mole of Br- contains 6.023 * 10²³ anions

0.00542 moles of Br- contain: 0.00542 * 6.023*10²³ = 3.264*10²¹ anions

Ans: There are 3.264*10²¹ anions in 0.5 g of MgBr2


4 0
3 years ago
Which of the following ion is the least and the most hydrated? OH- , Li+, K+, Na+​
vodomira [7]
I don’t know either lol
5 0
2 years ago
Other questions:
  • Balance each equation by entering the correct coefficients.
    12·1 answer
  • For C2H5OH (liquid)So = 161 J/K.mol; for C2H5OH (gas)So = 282.6 J/K.mol. What is ΔS if 92 g of C2H5OH is evaporated?
    7·1 answer
  • What is the pH of a solution made by diluting 1.00 mL of 0.10 M HCl with enough distilled water to make 1.00 L of solution?
    15·1 answer
  • Which of the following describes carbon dioxide? O Has polar covalent bonds and is a polar molecule O Has non-polar covalent bon
    8·1 answer
  • Which is a substance that could be found in air, water or soil that is harmful to humans or animals?
    7·1 answer
  • Which of the following is NOT true of a chemical reaction. PLZ HELP ASAP
    6·2 answers
  • Which of these is common to all chemical changes?
    12·1 answer
  • Sodium hydrogen carbonate, on heating, produces sodium carbonate, water and carbon dioxide.
    6·1 answer
  • A student dissolved 3.50g of copper (II) nitrate in water and mixed it with a solution of sodium carbonate. The student recovere
    9·1 answer
  • On an artificial reef in the Mediterranean Sea, the rocky bottom, the Dover sole, and the
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!