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Describe the relationships between the Atoms in Carbon Dioxide Molecules.

Carbon Dioxide molecules consist of 2 oxygen and 1 carbon atom. The oxygen atoms are bonded to the carbon atom using double covalent bonds.
AA
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Why do we use simultaneous equations?

Simultaneous equations are used to help us find unknown values. An example of simultaneous equations is:1) x + y = 62) 2x + 3y = 16We don't know what the value or X or Y is but we know that together they mak...
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Answered by Amelia G. • Maths tutor
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Find the value of X in the equation X^2 + 9X - 22 = 0

There are 3 ways of solving this but I will go through the 2 that are necessary for GCSE level Firstly - 22 can only be made by 1 22 or 2 11 -------> 11 - 2 = 9 therefore 11 and -2 are needed to make the ...
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Answered by Christopher A. • Maths tutor
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Rearrange the equation y = 3(x+1)/4, making x the subject.

Firstly, before we even approach the bracket containing the x term, we want to deal with the fraction. The first step should be multiplying by 4 to cancel out the denominator on the right. This leaves us wit...
MC
Answered by Mustafa C. • Maths tutor
3919 Views

What is diffusion?

Diffusion is the net movement of particles from an area of high concentration to an area of low concentration. This means that the particles of a substance move from where there is lots of it to where there ...
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Answered by Rhiannon J. • Biology tutor
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