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Explain why an atom has no overall charge

Atoms are made up of three different types of particle. Protons and neutrons exist in the nucleus, while electrons orbit. The relative charges of these particles mean that protons are positive while electron...
SK
Answered by Salko K. • Chemistry tutor
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What is the "Subjunctive"? And when should it be used?

The subjunctive is what's known as a "mood", which merely means that it's used in a different way to "normal" (indicative) verbs. That is, in most cases, to express an element of doubt. H...
AH
Answered by Alexander H. • Latin tutor
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Define, with examples, the definition of proportional representation (5 marks).

Proportional representation refers to an electoral system in which the percentage of seats won by a given political party in a legislative election corresponds to their share of the vote. For example if the ...
DA
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How do I conjugate 'aller' in the pluperfect tense?

Take the infitive form 'aller', remove the -er ending and add the perfect ending -é. Between the participle (allé) and the subject pronoun (je, tu, il etc.), add the auxilliary verb, in this case 'être' in t...
DT
Answered by Dylan T. • French tutor
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Explain the term span of control.

Span of control refers to the number of subordinates reporting directly to a manager. There are two classifications which are wide span of control and narrow span of control. Wide span has many subordinates ...
AA
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