Top answers

All subjects
All levels

Aluminium is protected from rust by a layer of oxidised Al2O3. Can you write a balanced equation for the formation of this layer?

To form Al2O3 you need both Al and O2 (oxygen gas is a dimer):

Al + O2 -> Al2O3

But this equation is not balanced. To balance it, first equate the number of oxygen atoms:

Al + 3O2 ...

JB
Answered by Jessica B. Chemistry tutor
3223 Views

Line AB, with equation: 3x + 2y - 1 = 0, intersects line CD, with equation 4x - 6y -10 = 0. Find the point, P, where the two lines intersect.

Let eqn. 1 be: 3x + 2y - 1 = 0  & Let eqn. 2 be: 4x - 6y -10 = 0

Multiply eqn. 1 by a factor of 3, and add the two eqautions together. (This eliminates y from the equation)

This gives: 9...

KS
Answered by Kris S. Maths tutor
4166 Views

A straight line passes through the point (2,1) and has a gradient of 3. Find the co-ordinates of the points where this line intersects the axes

M=3

y1=1

x1=2

y-y1=m(x=x1)

y-1=3(x-2)

y-1=3(x-2)

y-1=3x-6

y=3x-6

at the x axis, y=0. 

‘Sub in to find the x co-rdinate:

0=3x-5

...

AC
Answered by Anna C. Maths tutor
8422 Views

How do I say I don't like maths because its difficult?

No me gustan las matemáticas porque son difíciles.

IS
Answered by Itxaso S. Spanish tutor
3640 Views

If the Catholic Church was so powerful, why did the Protestant Reformation take place?

The Catholic Church had traditionally been the dominant socio-political and religious force in Europe in the centuries leading up to the Protestant Reformation: popes were some of the most influential fig...

DF
Answered by Duncan F. History tutor
2490 Views

We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2026 by IXL Learning