Search our library of homework questions

Top answers

All subjects

All levels

Differentiate the following equation, y = x^9 + 3x^2 + x^(-1)

dy/dx = 9x⁸+ 6x - x^-2

2685 Views

Describe a test that could be used to distinguish between potassium sulfate (K2SO4) and potassium nitrate (KNO3)

Add a solution containing Barium ions (eg BaCl2, Ba(OH)2, etc)K2SO4 will form white precipitateKNO3 will have no visible change

Answered by Isobel W. • Chemistry tutor

14210 Views

An aldehyde CH3CH2CH2CHO reacts with potassium cyanide (KCN) to form a racemic mixture of two stereoisomers of CH3CH2CH2CH(OH)CN. A)Explain why a racemic mixture is formed and b)describe how you would distinguish between 2 samples of the stereoisomers

A) The aldehyde contains a planar carbon group which can be attacked from both sides. Each side has equal probability of being attacked resulting in a ra...

Answered by Isobel W. • Chemistry tutor

7611 Views

How to compare and contrast the authors of one text with another when writing an essay.

This is a standard A Level essay question which is asked across multiple exam boards with an ultimate theme that the student must write about. It is also a good question to work through with students as ...

Answered by Olivia D. • English Literature tutor

3742 Views

Escribe una carta de presentacion para solicitar un trabajo en un museo de arte.

Muy Sres. Míos:
Me dirijo a ustedes con relación al anuncio que vi en su sitio web con respecto a una oportunidad para prácticas y pasantías como anfitrión en el Museo de Arte.Actualmente soy una est...

Answered by Juliet R. • Spanish tutor

5130 Views