Top answers

What happens to the reactivity going down group 7?

The reactivity decreases down group 7 as the atomic radius increases, as the distance between the outer shell electrons and nucleus increases. As a result less energy is required to remove the outer electron.
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Answered by Sarish S. • Chemistry tutor
3320 Views

Write 36 as a product of its prime factors

3 2 x 2 2 Drawing a tree during explanation is very helpful.
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Answered by Nighat K. • Maths tutor
4147 Views

3/5 of a number is 162. Calculate the number.

Non calculator paper. 162 divided by 3 = 1/554 = 1/554*5 = 270
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Answered by Nighat K. • Maths tutor
6635 Views

Rearrange the following formula to make x the subject. y=4x-7

Answer: x=(y+7)/4 Workings:y=4x-7 add 7 to both sidesy+7=4x divide both sides by 4 to give the answer
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Answered by Megs W. • Maths tutor
10646 Views

What are two benefits of a USP (unique selling point) for a business like Coca Cola?

One benefit may be that Coca-Cola can differentiate themselves from competitors. This means that customers will have a unique perception of their product compared to those of competitors like Pepsi, and coul...
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