Answer:
Absorb light energy
Explanation:
Chlorophyll absorbs light energy which is used to produce carbohydrate and oxygen in the presence of carbon dioxide and water.
N2 is a diatomic molecule as it is composed of 2 atoms of the same element, covalently bonded to each other in this case Nitrogen.
D. Heating with a flame, as this would provide thermal energy to the solution/substance
Answer: The chemical formula of the gas is Xenon.
Explanation:
From Graham's law of effusion rates, the rate of effusion of a gas is inversely proportional to the square root of its molar mass.
Given: Rate of unknown gas =
Putting the values in the formula:
Squaring both sides:
As Xenon (Xe) has molar mass of 131g/mol, Thus the chemical formula of the gas is Xenon.