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Marta_Voda [28]
2 years ago
13

A liquid that occupies a

Chemistry
1 answer:
Rudik [331]2 years ago
5 0

Answer:

D

Explanation:

You are looking for   kg / L

  3.188 kg / 3.23 L = .987  kg/L

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Which element is the least reactive, Li, Be, Mg, Na?
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Answers:

Lithium-Li

Beryllium-Be

Magnesium-Mg

Sodium-Na

4 0
3 years ago
In the first distillation this week, which component of the original solvent mixture makes the larger contribution to the vapor
Olenka [21]

In the first distillation this week, Hexane from the original solvent makes a larger contribution to the vapor pressure of the mixture.

In between hexane and toluene, the hexane will have more vapor pressure contribution in the solution. The boiling point of hexane is much lower than toluene. Therefore, it will evaporate easily at low temperatures and start exerting pressure on the solution.

Hence between hexane and toluene, because of more vapor pressure of hexane and lower boiling point, it will easily evaporate and exerts pressure.

Therefore, from the original solvent, hexane makes a larger contribution to the vapor pressure of the mixture.

To learn more about vapor pressure and hexane, visit: brainly.com/question/28206662

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7 0
1 year ago
What is the ph of 0.51 m ca(ch3coo)2 solution?
Sidana [21]

Answer : The pH of calcium acetate solution will be 9.38.


Explanation : When calcium acetate dissocates completely in solution to form Calcium(+2) ions and two acetate ions, this gives the acetate ion concentration as (2 X 0.51 M) = 1.02 M

Acetate ion then hydrolyzes as follows;


C_{2}H_{3}O_{2}^{-}  + HOH  HC_{2}H_{2}O_{2} + OH^{-}:

Now, Kb will be = [HC_{2}H_{2}O_{2}]  [OH^{-}] / [C_{2}H_{3}O_{2}^{-}]


= Kw / Ka


= 1 x 10^{-14} / 1.8 x 10^{-5} = 5.6 × 10^{-10}

[OH^{-}] = 2.4 × 10^{-5}


Now, we know , pOH = -log [OH^{-}] = 4.62


So, the pH = 14 - pOH = 14 - 4.62 = 9.38

8 0
3 years ago
What is a chemical bond? Why do they form?
finlep [7]
A strong force of attraction holding atoms together in a molecule or crystal, resulting from the sharing or transfer of electrons, The bond may result from the electrostatic force of attraction between oppositely charged ions as in ionic bonds or through the sharing of electrons as in covalent bonds.
3 0
3 years ago
Which statement about a hypothesis is true
zlopas [31]

Answer:

All these statements are true.

Explanation:

Many describe it as an "educated guess," based on prior knowledge and observation. While this is true, the definition can be expanded. A hypothesis also includes an explanation of why the guess may be correct.

hope this helps :)

3 0
4 years ago
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