Answer:
36.92 mg of oxygen required for bio-degradation.
Explanation:

Mass of benzene = 30 mg = 0.03 g (1000 mg = 1 g )
Moles benzene =
According to reaction 5 moles of benzene reacts with 15 moles of oxygen gas.
Then 0.0003846 mol of benzene will react with:
of oxygen gas
Mass of 0.0011538 moles of oxygen gas:
0.0011538 mol × 32 g/mol = 0.03692 g = 36.92 mg
36.92 mg of oxygen required for bio-degradation.
Answer:
I think the answer is D.
Explanation:
Because if it is unsaturated then it can dissolve more solutes.
Answer:
D) Sulphur
Explanation:
Sulphur has the strongest electromagnetivity here
Answer:
D. Number of electrons
The answer for this question is: Atoms