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Kisachek [45]
3 years ago
7

Mixtures can be separated into their components by taking advantage of differences in the chemical properties of the components.

Why might this separation method be less convenient than taking advantage of differences in the physical properties of the components?
Chemistry
1 answer:
Sedaia [141]3 years ago
4 0
The method of separating mixtures by means of their differences in the chemical properties of the components is less convenient because these methods requires reactions therefore needs energy, increasing the costs for the process.
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Photodissociation of ozone (O3) can be described as producing an oxygen atom with heat of formation 247.5 kJ/mol. However, in re
Lapatulllka [165]

Answer:

0.2193 μm

Explanation:

The reaction showing the Photodissociation of ozone (O3) is given below as:

           O₃         +        hv   -------------------------->      O₂         +       O⁺  

H°        (142.9)                                                         (0)                  (438kJ/mol).

The first thing to do here is to determine the change in the enthalpy of the total reaction, this can be done by subtracting the change in the enthalpy of the reactant from the change in enthalpy in the product. Hence, we have:

ΔH° = [438 kJ/mol + 247.5 kJ/mol] - (142.9) = 542.6 KJ/mol.

This value, that is 542.6 KJ/mol will then be used in the determination of the value for the maximum wavelength that could cause this photodissociation.

Therefore, the maximum wavelength could cause this photodissociation ≤ h × c/ E = [ 1.199 × 10⁻⁴]/ 542.6 = 2.193 × 10⁻⁷ =  0.2193 μm

7 0
3 years ago
Which wave is carrying the most energy? A wave with large amplitude. A wave with very large amplitude. A wave with small amplitu
tankabanditka [31]

Answer:

A wave with small amplitude.

Explanation:

Amplitude us inversely proportional to energy so the smaller the amplitude, the higher the energy.

Hope it helps.

4 0
4 years ago
Please help me with this question
Leviafan [203]

1. The resulting concentration will be 0.00044 mol/L

2. The minimum mass of sodium sulfite to add will be 0.4032 grams.

<h3>Stoichiometric problems</h3>

1. Using m1v1=m2v2

  m1 = 0.01 mol/L, v1 = 20 mL, v2 = 450 mL

 

       m2 = m1v1/v2 = 0.01 x 20/450 = 0.00044 mol/L

2. Na_2SO_3 + Ca(NO_3)_2 --- > 2NaNO_3 + CaSO_3

Mole ratio of the reactants = 1:1

Mole of 80 mL, 0.0400 mol/L Ca(NO3)2 = 80/1000 x 0.0400 = 0.0032 mol

Equivalent mole of Na2SO3 = 0.0032 moles

Mass of 0.0032 moles Na2SO3 = 0.0032 x 126 = 0.4032 grams

Thus, the minimum mass of sodium sulfite to be added must be 0.4032 grams.

More on stoichiometric calculations can be found here: brainly.com/question/27287858

#SPJ1

8 0
2 years ago
What is the concentration of a solution that contains 9 moles of solute in 3 liters of solution?
SVEN [57.7K]

Answer:

Explanation:

mol solute / L soln. M = 5.50 mol / .600 L. M = 9.16 molar

7 0
4 years ago
Calculate the number of moles in 79.17 g of magnesium chloride
natulia [17]
There would be 0.8315 moles
7 0
3 years ago
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