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Calculate the number of moles in 23.0g of CO2? ( relative atomic mass : Carbon=12, Oxygen=16)

Firstly we need to work out the molecular mass of CO₂ . There is one carbon and two oxygens so we have to add the relative atomic mass (Ar) of one carbon and two oxygens. From the quest...

Answered by Dilan B. • Chemistry tutor

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Solve the equation (2x-1)/3 + (x+2)/2 +x/6 = 8

The first thing you want to do is to get rid of the fractions,Multiplying everything by 6 will help you do this You must multiply every fraction by 6 and also everything you do to the left hand side...

Answered by Niamh M. • Maths tutor

5559 Views

given that f(x) = x^4 + 2x, find f'(x)

This is a simple differentiation question where we just differentiate by taking the power of the x and bringing that in front as a constant and then taking 1 off the power. So for the first term, x^4, we ...

Answered by Sheheryar F. • Maths tutor

4352 Views

Tus opiniones sobre tu vida en el colegio

This is a basic GCSE writing question that surfaces time and time again. In 90 words this can be broken down intoYour day to day routine in the school mentioning your timetableWhat you do in each classYou...

Answered by Caolan S. • Spanish tutor

2263 Views

A curve has an equation y=3x-2x^2-x^3. Find the x-coordinate(s) of the stationary point(s) of the curve.

The very first step in solving this problem is understanding that a stationary point is where the derivative of the curve, dy/dx (or in Newton’s notation y’), is equal to zero. This is because at stationa...

Answered by Callum G. • Maths tutor

4865 Views