Top answers

Explain why ionic compounds (e.g. NaCl) are soluble, and why they conduct electricity in this state.

Ionic compounds have a 'giant' ionic lattice structure. 'Giant' just essentially means that a basic unit is being repeated. In the case of NaCl, the ionic lattice would consist of the ions Na+ and Cl-. Water...
Answered by • Chemistry tutor
8857 Views

Carbon dioxide is a gas at room temperature while silicon dioxide is a solid at room temperature with a melting point of 1770°C. Explain this by comparing their particles and those forces between these particles.

Although C and Si are both group 4 elements, C is much smaller than Si and can form double bonds with two oxygen atoms whereas Si is larger and so forms single bonds with four oxygen atoms. This means that c...
Answered by • Chemistry tutor
35627 Views

‘A noble Venetian lady is to be murdered by our poet in sober sadness, purely for being a fool!’ In light of this view, discuss Shakespeare’s representation of Desdemona in 'Othello' and whether it challenges the morals of his time.

The worth of women in the Jacobean era relied predominantly on their obedience to men; particularly to fathers for use as a marital match. Seen as fools, a submissive and meek demeanour was expected of them ...
ER
5087 Views

(b) In healthy lungs, a gradient is maintained between the concentration of oxygen in the alveoli and the concentration of oxygen in the lung capillaries. (i) Describe how ventilation helps to maintain this difference in oxygen concentration.

Ventilation of the lungs is a mechanism designed to maintain a high concentration of oxygen present in the alveoli. Blood is delivered to the lungs from the heart deoxygenated, meaning the majority of haemog...
Answered by • Biology tutor
12787 Views

The Federal Government was the most Important Element in Achieving Civil Rights during this period. How far do you agree?

In order to achieve civil rights there needed to be an effective combination of legislation, enforcement and change in social attitudes. The federal government was made up of the Supreme Court, congress and ...
Answered by • History tutor
18294 Views