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How do you calculate the number of moles of CO2 molecules if the mass is 22g

Firstly, you need to understand that mass= moles x relative formula mass. Using this equation and the understanding of the periodic table, you can work out the relative atomic mass of carbon which is 12 and ...
CC
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Factorise and solve x^2 -4x -12=0

x 2 - 4x -12 is a quadratic equation with a general formula. It can be factorised by into brackets and solved.By looking at the equation, the last term is negative so one number in the factorised form must b...
MM
Answered by Mitchel M. • Maths tutor
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Find the length of the longest side of a right angled triangle with the two smaller sides equal to 8 and 15.

As the triangle in the question is a right angled triangle we can use Pythagoras Theorem , a 2 +b 2 =c 2 . c is the size of the longest size which is what we are looking for and a and b are lengths 8 and 15....
CP
Answered by Calum P. • Maths tutor
3976 Views

What is the difference between meiosis and mitosis?

Meiosis concerns the division of cells within sexually reproducing organisms. It results in the formation of four daughter cells via meiosis I and meiosis II. These daughter nuclei are described as 'haploid'...
KM
Answered by Kestrel M. • Biology tutor
3008 Views

Explain the differences in structure between a vein and an artery

Arteries have a narrower lumen with a thicker layer of muscle tissue which contains more elastic. Whereas veins have a wider lumen with a thinner layer of muscle tissue. Veins also contain valves to prevent ...
LK
Answered by Louis K. • Biology tutor
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