Search our library of homework questions

Top answers

All subjects

All levels

What is meant by the term amphoteric? and give an example of a reaction using NaOH that could be used to distinguish between a solution of amphoteric AlCl3 and non-amphoteric MgCl2.

The phrase amphoteric describes a compound that reacts with both acids and bases.

NaOH can react with both AlCl₃ and MgCl₂to give a white precipitate but the addition of exc...

Answered by Lois L. • Chemistry tutor

14276 Views

Is First Past the Post the best electoral system for general elections to the UK Parliament?

Electoral systems can produce significantly different results to each other, and the chosen system prioritizes certain aspects of governance over others. Majoritarian systems (such as FPP or AV) often pro...

Answered by Tom P. • Politics tutor

4974 Views

Given the function y=(x+1)(x-2)^2 find i) dy/dx ii) Stationary points and determine their nature

Here we have a function made from the product of two functions, so we canuse the product differenciation rule.

y=uv => dy/dx=udv/dx + vdu/dx

Therefore dy/dy=(x-2)^2 + 2(x-2)(x+1)

Answered by Russell B. • Maths tutor

5065 Views

How do I begin tackling an unseen passage of Latin for translation into English?

Here's part of a passage taken from an OCR sample language paper: tum magna turba civium ad templum convenit atque ianuam lapidibus obstruxit ne Pausanias exire po...

Answered by Ho Ting C. • Latin tutor

6885 Views