triangular laminar
Month: December 2019
position vectors involving a circle
First three terms of a GP
Solve for z
Explain how crude oil is separated in a fractionating tower.
In the furnace at the bottom of the fractionating tower, petroleum is heated to 400 deg C.
The oil vaporizes and enters the fractionating tower at the bottom.
The temperature of the fractionating tower is highest at the bottom and the temperature decreases going up the tower.
As the hot vapour rises up the column, they cool and condense into the trays at various heights depending on their boiling points.
Lighter fractions with the lowest boiling points are distilled over at the top of the fractionating column.
Heavier fractions with the highest boiling points are collected at the bottom of the fractionating column.
Parametric equations curve C
Explain why, going down Group I, the reactivity of the element increases.
Going down Group I, the number of electronic shells of the atom increases, and atomic radius increases. As the distance between the valence electrons and the nucleus increases, the electrostatic force of attraction between the positive protons in the nucleus and the negative valence electrons decreases.
Hence, going down Group I, the atom loses its valence electrons more readily and becomes more reactive.