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Explain why the ionisation energies tend to increase across a period

As you go across a period, the next atom will have 1 more proton in its nucleus than the one before. Therefore, the nucleus of each atom will have an increasingly positive charge, meaning a stronger nuclear ...
MS
Answered by Megan S. • Chemistry tutor
2638 Views

Describe the process of eukaryotic DNA replication

DNA helicase unzips and unwinds the DNA double helix by breaking hydrogen bonds between complementary base pairs. This exposes the bases on two strands creating template strands. Free floating nucleotides ar...
LB
Answered by Louis B. • Biology tutor
11625 Views

Solve this equation x^2 +4x - 5

Have you seen anything like this before? What do you understand by this equation? How do you expand brackets? Grid/smiles and eyebrows How confident are you with factors and times tables? How is a square num...
ZM
Answered by Zeenat M. • Maths tutor
4005 Views

What is the value of x from (x+2)^2=4

(x+2)^2=4=>x+2=2+>x=0 or x+2=-2=>x=-4
AB
3280 Views

Integrate x^2/(1+x^2)dx

Unlike if we had just x in the numerature, here the chain rule will do us no good. Integration by parts in this case also is little help - we end up with expressions at least as difficult as we started with....
LH
Answered by Laird H. • Maths tutor
8533 Views