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What is a mole?

A mole is a unit for amount of substance.

This unit was created because we needed a common unit which could be used to convert from eg. number of atoms/molecules to grams or concentration...

DB
2488 Views

What is the median, upper quartile and lower quatile. How do we find them?

The easiest way to explain this would be to use an examplar question. For example:

Ben is given a sequence of numbers and is told to find the median, lower quartile and upper quartile.

DB
Answered by Daniella B. • Maths tutor
19063 Views

What is the difference between transcription and translation

Transcription is the sythesis of mRNA, where the DNA code is coverted to a complementary DNA code.

Translation occurs where the mRNA is decoded by a ribosome to produce a specific amino a...

DB
Answered by Daniella B. • Biology tutor
2319 Views

Solve 0.5(6d+2)-4=10

Algebra is always a bit confusing when you first learn is as it's the first time letters come into maths, here is the mainthing you should remember:

you have to do the same thing to both ...

RB
Answered by Rheanne B. • Maths tutor
3450 Views

What is the difference between "ser" and "estar"?

The difference between these two verbs is best shown by examples.

Ser: It is used in the following context for the word being: "La manzana es verde" (The apple is green) This sh...

CO
Answered by Cristina O. • Spanish tutor
2402 Views

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