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How do I know when to use 'à' vs. 'de'? French preposition help!

There are various rules in French which can help you to choose the right preposition. Below are the rules for the preposition à. à used to refer to a place. - à la maison; au ( à + le) bureau. - for names of...
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Answered by Imogen C. • French tutor
12284 Views

How does the ionisation energy differ across period 2 from Li to Ne?

The ionisation energy across a period increases as the effective nuclear charge increases but the shielding stays the same. Effective nuclear charge= the electrostatic 'pull' that an electron 'feels' from a ...
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Answered by Hannah G. • Chemistry tutor
16254 Views

What is a catalyst?

A catalyst lowers the activation energy of a reaction and therefore increases the rate of reaction. The catalysts reacts with the reactants but is regenerated again in the reaction so it is not used up.
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Answered by Hannah G. • Chemistry tutor
5977 Views

How do I factorise a quadratic equation?

A quadratic equation is one with a squared term, like 3x 2 + 9x. If you're asked to factorise an equation like this, you need to find the highest common factor . This means that you need to find the highest ...
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Answered by Eden A. • Maths tutor
5157 Views

What is the political role of the Judiciary, and is it able to remain neutral from political bias?

The judiciary is one of the three branches of Government, and therefore plays a pivotal role in the political system. Its wider definition comprises numerous different layers of the legal system, that all pl...
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Answered by Rachael B. • Politics tutor
10948 Views