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describe in terms of electrons what happens when magnesium oxide is formed from magnesium and oxygen atoms?

Magnesium in a metal, whereas oxygen is a non metal - therefore magnesium oxide is formed by an ionic bond (if it were 2 non metals it would be a covalent bond). It is important to understand that atoms p...

Answered by Maaedah K. • Chemistry tutor

10349 Views

How do you conjugate regular -AR, -ER and -IR verbs in the pretérito indefinido?

Take the infinitive of the verb (the whole verb e.g. hablar) then remove the ending (AR, ER, IR) so you are left with the stem, which is ´habl´here. Then add the correct ending depending on the person it ...

Answered by Rebecca C. • Spanish tutor

2160 Views

Using examples, explain the difference between price elastic and inelastic.

Price elastic refers to when a change in the price of a good or services creates a larger percentage change in the demand for that good, or PED > 1. An example of an elastic good is Hovis Bread, becaus...

Answered by Rebecca H. • Economics tutor

4973 Views

Given the curve y=x^2 +1 and the line y=k, find, using graphical methods only, the value of k for which there is exactly one solution.

Graphically, the solution of a pair of simultaneous equations is the point of intersection between both curves. If we want only one solution to the system of equations, then there should only be one point...

Answered by Marcos T. • Maths tutor

2819 Views

Factorise the following expression x^2+11x+24=0

Find two values that multiply together to make 24, and add together to make 11
List the factors of 24:24,112,26,48,3
Here we can see the only numbers that add together to make 11 are 8 and 3, s...

Answered by Lauren M. • Maths tutor

3027 Views