Why would you add boiling chips/stones to a solution that is to be refluxed? when should you add them?
Answers
- Chip stones should be added to a solution that is to be refluxed as they act as nucleation sites for formation of solvent bubbles.
- This should be added when the temperature of the liquid is still low.
What are Boiling Chips?
These are usually added to a solution as they contain trappedair which
helps in the reflux process.
The high surface area ensures it acts as nucleation sites and the best time
to dd is when the temperature of the solution is still low for best results.
Read more about Boiling chips here brainly.com/question/10584205
Hope this helps!
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Answers
Answers
Orbitals are the regions where the possibility of finding the electrons are the most. -2, -1, 0, 1, 2, are the possible values of ml for an electron in a d orbital.
What are quantum numbers?
The ml will be 2 for the d -orbitals and is defined by the principal quantum number or the magneticquantum number. It states the orientation of the orbital and ranges from – l ≤ ml ≤ l.
As, ml for d orbitals = 2, then, -2, -1, 0, 1, 2 are the possible values that ranges from -l to +l.
Therefore, -2, -1, 0, 1, 2 are the values of ml.
Learn more about quantum numbers here:
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Answers
This is an incomplete question, here is a complete question.
The following balanced equation shows the formation of ethane (C₂H₆).
How many moles of hydrogen are needed to produce 13.78 mol of ethane?
1) 3.445 mol
2) 6.890 mol
3) 27.56 mol
4) 55.12 mol
Answer : The number of moles of hydrogen needed are, (3) 27.56 mol
Explanation : Given,
Moles of ethane = 13.78 mol
The given balanced chemical reaction is:
From the balanced chemical reaction we conclude that,
As, 1 mole of ethane produced from 2 moles of hydrogen
So, 13.78 mole of ethane produced from moles of hydrogen
Thus, the number of moles of hydrogen needed are, 27.56 mol
Answers
Answer:
I will pick fusion over fission.
Explanation:
Fission and Fusion are nuclear processes in which atoms are altered to create energy.
By definition, fission is simply the division of one atom into two atoms while fusion is simply the combination of two lighter atoms to produce a bigger atom.
I will pick fusion over fission for the following reasons;
- Fusion reactions produces far greater amounts of energy than fission reactions normally produce.
- Fusion does not produce radioactive, toxic waste products that can damage the environment we live whereas fission does so.
Answers
HCl(aq) ------------> H₃O⁺(aq) + Cl⁻(aq)
↓ ↓ ↓
1x10⁻⁴ M 0 0
-1 x 10⁻⁴ + 1 x 10⁻⁴ +1 x 10⁻⁴
_____________________________________
0 + 1 x 10⁻⁴ M + 1 x 10⁻⁴ M
PH = - log [ H₃O⁺ ]
PH = - log [ 1 x 10⁻⁴]
PH = 4.0
hope this helps!
Answers
Given that
Volume of solution = 2.0 L
Number of mole of solute = 3.0 mole
Therefore molarity = number of moles / volume in L
= 3.0 Mole /2.0 L
= 1.5 mole / L
= 1.5 M
Molarity:
The number of moles of solute per liter of solution is known as molarity of the solution. It symbolized by M. Molarity of any solution is a ratio of moles of solutes per liter of solution. It expressed by the following formula:
molarity = number of moles / volume in L