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Explain why there is a general increase in the first ionisation energy across the third period.

The first ionisation energy depends on:the charge on the nucleus, the distance of the outer electron from the nucleus, the amount of shielding by inner electrons and whether the electron is alone in an orbit...
MP
Answered by Mara P. • Chemistry tutor
7509 Views

Solve 7(x-5)=25-3x

Firstly, expand the left hand side of the equation out to produce: [7x-35=25-3x]. Bring all the x's to one side (to form 10x=60). Divide both sides by 10 to find the solution for x [x=60/10]. Therefore, x=6
JJ
Answered by Jenni J. • Maths tutor
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The equation 5x sqaured + px + q , where p and q are constants, has roots α and α + 4. (a) Show that p squared = 20q +400.

a+a+4 = -p/5a+2 = -p/10(a+2)sqaured = q/5 +4p sqaured/100 = q/5 +4p sqaured = 100(q/5 +4)implies p squared = 20q+400
AT
Answered by Ahmed T. • Maths tutor
6607 Views

Write an introduction to a Philosophy and Ethics question

A good introduction provides clarity to the question and informs the reader to what is going to be argued.1.) An effective introduction immediately offers a clear judgement, this gives clarity to the main th...
JT
2959 Views

Explain how to conjugate the conditional tense for regular verbs

The conditional tense is formed in two parts. For regular -ir and -er verbs, we use the infinitive as the stem. For regular verbs ending in -re we must first remove the "e" to create the stem. Once...
MJ
Answered by Miranda J. • French tutor
2472 Views