Explanation

When ultraviolet radiation reacts with chlorofluorocarbons (CFCs), it results in the breakdown of the ozone layer by releasing chlorine radicals Cl° and C° F2Cl.

Explanation

Pure water could be obtained from seawater by distillation.

Explanation

The value of the molar extinction coefficient of compound Z is 150 mol-1 dm3 cm-1.

Explanation

In forming H2CO3 (carbonic acid), each oxygen atom utilizes sp2 hybrid orbitals.

Explanation

The king was determined to enforce the law.

Explanation

The correct transformation is: The teacher said that the sun rises in the east.

Explanation

The molar mass of ethylene glycol (C2H6O2) = 2(12.01) + 6(1.01) + 2(16.00) = 62.07 g/mol

Number of moles of ethylene glycol = 60 g / 62.07 g/mol ≈ 0.966 moles

Mass of water = 100 g - 60 g = 40 g

Now, we need to convert the mass of water to kilograms:

Mass of water = 40 g * (1 kg / 1000 g) = 0.04 kg

Now, we can calculate the molality:

Molality (m) = moles of solute / mass of solvent in kg

Molality = 0.966 moles / 0.04 kg ≈ 24.15 moles/kg.

Explanation

• The compound K2Cr2O7 (potassium dichromate) is not a transition metal complex.
• It contains chromium in the +6 oxidation state, but it does not form a coordination complex with ligands.
• Instead, it is a chromium compound in which chromium is in the form of a polyatomic ion

Explanation

The pair of liquids that does not obey Raoult's Law is propanol and propanone.

Explanation

The complexometric titration using EDTA (Ethylenediaminetetraacetic acid) as a titrant is not suitable for titrating Xe (xenon) since xenon does not form stable complexes with EDTA.