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A shop sells bags of crisps in different size packs. There are 18 bags of crisps in a small pack (£4), 20 bags of crisps in a medium pack (£4.99) and 26 bags of crisps in a large pack (£6). Which size pack is the best value for money?

You can use the price of each pack and divide it by the number of bags of crips to get the price per packet, the one with the lowest price per packet will be the best value for money. The small packet cost £...
KG
Answered by Kahina G. • Maths tutor
14867 Views

Explain why chlorine (Cl2) is a gas at room temperature, but sodium chloride (NaCl) is a solid at room temperature.

The different states at room temperature occur as a result of differences in the bonding and structure of chlorine and sodium chloride. In chlorine, there are covalent bonds between individual atoms which le...
JZ
Answered by Julia Z. • Chemistry tutor
19910 Views

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
77612 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
31024 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
3524 Views