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The cost of 5 calculators is £35. Work out the cost of 8 of these calculators.

If the cost of 5 calculators is equal to £35, then we can use division to figure out how much one calculator costs. If we divide 35 by 5 we get the number 7. This means that one of the calculators is g...

DS
Answered by Danielle S. • Maths tutor
4404 Views

Define the term Humanism and identify (artist, title, date/location if appropriate) one work which has been affected by this idea.

Humanism in the Renaissance meant the revival of secular art forms and ideologies that exalted the Classical period as the height of intellectual thought and art forms. It was an ideology that was held...

DS
2020 Views

What are surds and how does multiplying them work?

A surd is an irrational number which cannot be expressed as a fraction or a recurring number. E.g. root 2 = 1.4142135…. and it continues (but it does NOT repeat like a recurring fraction though)

FS
Answered by Febi S. • Maths tutor
8303 Views

You added 75cm^3 of 0.5moldm^-3 HCl to impure MgCO2, and some was left unreacted. The unreacted HCl reacted completely with 21.6cm^m of 0.5moldm^-3 NaOH. So what is the percentage purity of the MgCO3 sample?

MgCO3 +2HCl --> MgCl2 + H2O +CO2

For this kind of question, I would always try to convert what I can into moles because tha...

FS
Answered by Febi S. • Chemistry tutor
8453 Views

How does a deletion of a base in the DNA base sequence lead to a mutated protein?

It is important to note that bases on the DNA (and mRNA) are read in separate sets of 3s along a DNA/(mRNA) stand (this is called a triplet code in DNA, or the codon in mRNA). So, if a base is deleted,...

FS
Answered by Febi S. • Biology tutor
16049 Views

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