Chemistry for life sciences UE Past Papers Questions.

Given the Lewis symbols (Li=3, F=9,Mg=12, N=7, Al=13 and O=8)

Using the Lewis symbols, show the reaction between

1. Lithium and Fluorine
2. Magnesium and Nitrogen
3. Aluminium and Oxygen

Answer / Solution

UNSOLVED

Define the term lone pairs and give 2 examples.

Answer / Solution

UNSOLVED

Given the Lewis symbols (Li=3, F=9,Mg=12, N=7, Al=13 and O=8)

Calculate the pH and pOH of;

1. solution
2. solution

Answer / Solution

UNSOLVED

Given the Lewis symbols (Li=3, F=9,Mg=12, N=7, Al=13 and O=8)

The pH of 0.20 M of an acid (HCOOH) is 3.45. What is the of the acid?

Answer / Solution

UNSOLVED

Show the oxidation number to all elements in the following equation;

Answer / Solution

UNSOLVED