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Varvara68 [4.7K]
4 years ago
6

Explain why hexane will dissolve benzene but will not dissolve sodium chloride.

Chemistry
1 answer:
goldfiish [28.3K]4 years ago
5 0

This is because benzene is a non polar solvent and hence benzene molecules cannot attract the solute (NaCl) molecules and NaCl does not dissolve in Benzene.

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What is meant by localised orbitals? Explain.
Anni [7]
Localized molecular orbitals are molecular orbitals which are concentrated in a limited spatial region of a molecule, for example a specific bond or a lone lake on a specific atom.
5 0
4 years ago
Iron forms rust, expressed as Fe2O3.
Elina [12.6K]

Answer:

it's C. 159.70 g

Explanation:

hopefully that helps

3 0
3 years ago
A solution has a hydronium concentration of 1.3x10^-3 M. what is the pH of the solution?​
Montano1993 [528]

Well, once you have done it and gotten back to us, which solution is more basic?

your answer- 6.65

5 0
4 years ago
It takes 500 kJ to remove one mole of electrons from the atoms at the surface of a solid metal. How much energy does it take to
prisoha [69]

Answer:

8.31 × 10⁻²² kJ

Explanation:

Step 1: Given data

Energy required to remove one mole of electrons from the atoms at the surface of a solid metal: 500 kJ/mol e⁻

Step 2: Calculate how much energy does it take to remove a single electron from an atom at the surface of this solid metal

We will use Avogadro's number: there are 6.02 × 10²³ electrons in 1 mole of electrons.

500 kJ/mol e⁻ × 1 mol e⁻/6.02 × 10²³ e⁻ = 8.31 × 10⁻²² kJ/e⁻

7 0
3 years ago
1. 3A + 2B + C + 2D + 20 kJ
erma4kov [3.2K]

Answer:

a) the reverse reaction is favoured

b) the forward reaction is favoured

c) the forward reaction is favoured

Explanation:

The equation ought to have been correctly written as;

3A + 2B --------> C + 2D. ∆H =20 kJ

Actually, we can see that the reaction is endothermic since ∆H= positive.

We know that when pressure is decreased, the reaction tends towards the side with higher total volumes. There are five volumes(moles) of reactants and three volumes(moles) of products. A decrease in pressure will favour the reverse reaction.

Being an endothermic reaction, increase in temperature is known to favour the forward reaction. Similarly, removing D will drive the equilibrium forward thereby favouring the forward reaction.

3 0
4 years ago
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