Top answers

All subjects
All levels

How would you preform the flame test to identify the presence of Sodium in a solution? (3Marks)

  1. Using a clean nichrome wire dip the loop into the solution 2) Hold the loop in the blue flame of a bunsen burner 3) Observe the colour. In this case it will be Yellow.
TD
1902 Views

y=(6x^9 +x^8)/(2x^4), work out the value of d^2y/dx^2 when x=0.5

The question can be represented by the notation d2y/dx2|x=0.5, meaning the second derivative of y with respect to x resolved at x=0.5. Since y is in the form f(x)/g(x), th...

OC
4041 Views

When "por" or "para" be used? Give some examples

Por:"Through"- Andamos por la cuidad. We walk through the cityDuration- Estudió por cuatro horas- I studied for four hours Exchange- Te doy diez euros por tu mochila. I'll give you ten euros for...

ED
Answered by Emilia D. Spanish tutor
1290 Views

If f(x)=(x-2)^2, determine the gradient of the tangent to the curve f(x) at x=-2.

Firstly, we will need to determine f'(x) which is the derivative of the function and will give us the gradient at a point. This is easiest done but multiplying out the brackets of f(x) to get the function...

CG
Answered by Cameron G. Maths tutor
2793 Views

Using a diagram, show how a polluting factory may cause a negative externality to society, and how a tax might be used to solve this market failure.

The first thing to do in this question is to make sure to define the terms. A negative externality is the negative unintended spill-over effects of an economic activity. In this case, when the factory pro...

AM
Answered by Aurora M. Economics tutor
2186 Views

We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences