Top answers

How do I explain that the breakdown of an ester is a hydrolysis reaction?

The breakdown of any product using water is called a hydrolysis reaction. Ester + Water ---> Alcohol + Carboxylic acid An ester splits into alcohol and carboxylic acid during its reaction with water, maki...
MU
Answered by Mamie U. • Chemistry tutor
1905 Views

(A-level but box won't let me change it from GCSE) A particle of charge q and initial speed v is stopped by a potential difference V in distance d and time t. What was its initial momentum?

Define p=momentum, E=electric field.Firstly we know that:1) ∆p/∆t = F - definition of momentum2) F = Eq - force on particle in an electric field caused by a voltage3) E = V/d - definition of electric field o...
GT
Answered by Greta T. • Physics tutor
3294 Views

Describe the Darwinian theory of natural selection (GCSE/A-Level)

Every individual of every species living on the planet has DNA, made up of sections called genes. Mutations to these genes occur over time, resulting in a change to an individual's behaviour or physiology. T...
BD
Answered by Bill D. • Biology tutor
3915 Views

Prove that the square of an odd number is always 1 more than a multiple of 4. [Edexcel Higher Tier 2018, Paper 1: Question 12]

We want to start with “the square of an odd number” and show something. Remember that any odd number can be expressed as 2n+1 (an even number is 2n, and any odd number is 1 larger than an even). So squaring ...
RH
Answered by Robert H. • Maths tutor
3370 Views

How do i form the imperfect subjunctive tense?

First of all, it's important to remember that you wont be required to spontaneously conjugate verbs into the imperfect subjunctive at this level! You may have to identify them in texts, but you won't be aske...
LE
Answered by Lauren E. • Spanish tutor
2782 Views