Top answers

Why does an atom have no overall charge?

An atom has no overall charge because each element has the same number of protons and electrons. Protons have a +1 charge, and electrons have a -1 charge, these charges cancel out if there is the same amount...
KG
Answered by Kahina G. • Chemistry tutor
77767 Views

Why does ice float on water?

When water freezes into ice, the H 2 O molecules form Hydrogen bonds between each other and arrange themselves into an open lattice structure. This causes the molecules in ice to be further apart from each o...
JC
Answered by James C. • Chemistry tutor
31076 Views

Why did Partition occur in Ireland in 1922?

This question should be answered with reference to a number of factors, which should be laid out and clearly signposted in the introduction. The key factors to discuss are: Protestant Ulster Unionism vs Cath...
JL
Answered by Jennifer L. • History tutor
3539 Views

Describe the process of breathing out.

Firstly, the intercostal muscles contract. This causes the ribcage to move upwards and outwards. The diaphragm also contracts. This all has the combined effect of increasing the volume of the lungs. As a res...
JZ
Answered by Julia Z. • Biology tutor
5538 Views

A company is producing a one-page flysheet 24 cm high by 18 cm wide. It will have a text area in the centre which has a margin of the same width all the way around. The text must occupy exactly half of the total area:

18*24=432 432/2= 216 Therefore area of text must equal 216. And the margin must be the same width all the way round. Therefore, (24-x)(18-x)=216, 432-24x-18x+x 2 =216, 216-42x+x 2 =0, (x-36)(x-6)=0. x=36 and...
JS
Answered by Joshua S. • TSA Oxford tutor
6963 Views