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What is the difference between the two main schools of thought on enzyme function?

The first of the two major theories are Lock and Key mechanism, which describes the perfect design of the enzyme active site to that of its substrate so that they can immediately interact on contact witho...

JC
Answered by Jonathan C. • Biology tutor
2785 Views

What is the % yield if 12g of magnesium is dissolved in hydrochloric acid to produce 20g of magnesium chloride?

First we need to write the balanced equation for the reaction. In this case it is Mg + 2HCl -> MgCl2 + H2. Now we need to work out the maximum theoretical yield of MgCl2

HW
Answered by Holly W. • Chemistry tutor
7483 Views

Solve x^2 = 4(x – 3)^2

To solve this equation we need to firast expand it. 

x2=4(x-3)2

To do this we first expand the brackets. Remeber anything squared means times i...

AM
Answered by Annabel M. • Maths tutor
26691 Views

With reference to valencies, describe and explain the differences in reaction as you go down group 1 of the periodic table for the reaction: metal + water -> Metal hydroxide + hydrogen.

As you descend the group, the reactions become more vigorous, more exothermic and have a higher rate of reaction. Lithium will just gently fizz and produce a gas, sodium will melt into a ball shape and fi...

GN
Answered by George N. • Chemistry tutor
2838 Views

What is meant by дательный падеж and what is an example of where it is used?

The dative case.  This is a case used for indicating movement towards something, e.g. in the sentence 'give the book to me' the word 'me' takes the dative case.  The word мне thus means 'to me'.

AH
Answered by Anna H. • Russian tutor
2702 Views

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