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Explain why chlorine has a lower boiling point than Bromine. (2 marks)

Chlorine molecules are smaller than bromine molecules in size, therefore, the van der Waals forces (intermolecular forces) are weaker between Cl2 molecules than compared to Br2 molecules.
JB
Answered by Joseph B. • Chemistry tutor
13076 Views

Bob sprints down a 100 metre track as fast as he can and as he arrives at the finish, a light gate cuts a timer that has been active since Bob began his sprint. It reads 12.45 seconds. calculate Bobs average speed during the sprint.

s=distance/time = 100/12.45 =8.03m/s
RW
Answered by Richard W. • Maths tutor
3165 Views

A cylindrical rod of radius 7mm and Young’s Modulus 70 GPa has a weight F applied to it. The material experiences a strain of 0.2%. What force has been applied?

Young's Modulus is defined as the ratio of stress to strain. E = stress/strain. Stress is the force per unit area, F/A. By substitution, we can see that E = F/(A x strain). Rearranging gives F = E x A x stra...
CW
Answered by Callum W. • Physics tutor
2640 Views

How would a follower of Christianity respond to the issue of Abortion?

There are many different ways that a Christian could respond to the issue of abortion. A key aspect of Christianity is the sanctity. This is the belief that life is sacred as it is a gift from God hence it s...
IA
3189 Views

How do I start writing a personal statement?

I'd recommend starting by writing down all the achievements/qualifications that you think could be relevant to a personal statement. Then make a second sheet filled with all the reasons why you want to do th...
JB
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