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Which are four factors affecting the rate of a chemical reaction and how do these affect the rate constant of the reaction?

For a chemical reaction to occur the reactant particles must collide with each other with the correct orientation and they must also have a minimum energy necessary for the molecules to successfully react...

Answered by Anna L. • Chemistry tutor

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There are n sweets in a bag. 6 of the sweets are orange. The rest of the sweets are yellow. Hannah takes a random sweet from the bag. She eats the sweet. Hannah then takes at random another sweet from the bag. She eats the sweet. The probability that H

The answer is a proof so is best shown during the interview via the whiteboard. For reference this question was in the news a few years ago and was considered difficult for GCSE students at the time.

Answered by Kifayaat A. • Maths tutor

2814 Views

3x + 12 = 24, solve for x.

Firstly, we need to make 'x' the subject of the equation. We do this by 'moving' everything that isn't an x over to the other side of the equation. When we do this, the main thing to remember is that what...

Answered by • Maths tutor

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Describe what the Activation Energy for a reaction is.

The activation energy is the minimum amount of energy that particles need to collide with for the reaction to occur.

Answered by Adi R. • Chemistry tutor

1978 Views

Explain what advantage a large surface area to volume ratio will provide for a penguin living in Antarctica

A large surface area to volume ratio will decrease the rate of heat loss from the penguin. In the cold environment of Antarctica this means that the penguin needs to expend less energy to maintain its bod...

Answered by Adi R. • Biology tutor

4868 Views