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
Reil [10]
3 years ago
13

How many moles are in 68.5g of KOH?

Chemistry
2 answers:
Dafna11 [192]3 years ago
8 0

Answer: It has to be 56.10564

Explanation:1 grams KOH to mol = 0.01782 mol

10 grams KOH to mol = 0.17824 mol

20 grams KOH to mol = 0.35647 mol

30 grams KOH to mol = 0.53471 mol

40 grams KOH to mol = 0.71294 mol

50 grams KOH to mol = 0.89118 mol

100 grams KOH to mol = 1.78235 mol

200 grams KOH to mol = 3.5647

melomori [17]3 years ago
8 0

Answer: 1.22mol

Explanation:

MM of KOH = 39 + 16 + 1 = 56g/mol

Mass conc. Of KOH = 68.5g

Number of mole = Mass conc. / MM

Number of mole = 68.5/56 = 1.22mol

You might be interested in
How many particles are in 3.2 mole of neon gas
Cerrena [4.2K]

There are 1.93 x 10²⁴ particles

<h3>Further explanation</h3>

Given

3.2 moles of Neon gas

Required

Number of particles

Solution

The mole is the number of particles(molecules, atoms, ions) contained in a substance  

<em>1 mol = 6.02.10²³ particles </em>

Can be formulated

N=n x No

N = number of particles

n = mol

No = Avogadro's = 6.02.10²³

So the number of particles for 3.2 moles :

N = 3.2 x 6.02.10²³

N = 1.93 x 10²⁴

or

we can describe it using Avogadro's number conversion factor

\tt 3.2~moles\times \dfrac{6.02\times 10^{23}}{1~mole}=1.93\times 10^{24}

7 0
3 years ago
1) Which of the following is NOT a step in the scientific method *
Alex_Xolod [135]

Answer:

applying for a license

7 0
3 years ago
Read 2 more answers
When 32 grams of aluminum react, the actual yield is 105.5 grams, what is the percent yield?
user100 [1]

Answer:

329.7%

Explanation:

Percent Yield = Actual Yield/ Theoretical Yield x 100%

Percent Yield = 105.5g/32 x 100% = 329.69 ≈ 329.7 %

5 0
3 years ago
Using this illustration, what is the chemical formula? Picture and possible answers are below.
qwelly [4]
NH3. 1 nitrogen and 3 hydrogen
4 0
3 years ago
Read 2 more answers
Select all that apply. Which of the following statements are true? Significant figures are an indicator of the certainty in meas
Ilya [14]
Significant figures communicates the level of precision in measurements.
5 0
3 years ago
Read 2 more answers
Other questions:
  • 0.556 g of a solid white acid are dissolved in water and completely neutralized by the addition of 52.38 mL of 0.396 M NaOH. Cal
    7·1 answer
  • What is the overall reaction order for this rate law: rate= k[a][b]?
    6·1 answer
  • Explain why silicon dioxide is a suitable material for lining furnaces
    6·1 answer
  • Which two layers are part of the thermosphere?
    5·2 answers
  • What is the name of the functional group in the following compound
    5·2 answers
  • A room with dimensions 7.00m×8.00m×2.50m is to be filled with pure oxygen at 22.0∘c and 1.00 atm. The molar mass of oxygen is 32
    14·1 answer
  • Help please!
    11·1 answer
  • Imagine two solutions with the same concentration and the same boiling point, but one has benzene as the solvent and the other h
    13·1 answer
  • PH of a 0.00072 M HCl solution.
    5·1 answer
  • Please help I really need it ill give brainliest
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!