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What is the main differences between a Parliamentry and Presidential systems?

Parliamentry and Presidential systems are two of the most common governmental systems used. The two oldest and most prominent examples of these systems are the British and American systems respectively. T...

Answered by Gareth K. • Politics tutor

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The acid dissociation constant, Ka, of ethanoic acid is 1.78 x 10^-5 at 298K. Given that the concentration of a sample of ethanoic acid is 0.4moldm^-3, calculate its pH at 298K.

Using the acid dissociation equation, Ka = [H+][A-]/[HA]. (where Substitute the known values into the concentration to give 1.78x10^-5= [H+][A-]/0.4 . Because the acid is dissociating in solutio...

Answered by Sita R. • Chemistry tutor

11846 Views

What was the main causes of the First World War?

The causes of the First World War are numerous and varied, with long and short term factors but the main reason was the formation of Germany threatening the Balance of Power of Europe. Britain's foreign p...

Answered by Gareth K. • History tutor

2488 Views

The length of a rectangle is five times the width. The area of the rectangle is 1620cm2. Work out the width of the rectangle.

For this question, we need to know the formula for finding the area of a rectangle is (length * width)From the question, Width = w; Length = 5wArea = 5w *w =1620cm². therefore, 5w² =...

Answered by Eme H. • Maths tutor

2795 Views

Please give a short overview what the League of Nations was and why it was found.

The League of Nations was an international organization which resulted out of the Paris Peace Conference that eventually ended the First World War. Even though then U.S.-President Woodrow Wilson initiated...

Answered by Hannah M. • History tutor

1724 Views