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Describe the process of osmosis

Osmosis is the movement of water molecules from an area of high concentration to an area of low concentration, through a partially permeable membrane.
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Answered by Aqsa A. • Biology tutor
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What is 17% of 84?

We know that 17% is the same as 17/100 or 0.17 so we do 0.17*84 = 14.28.
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Answered by Chris B. • Maths tutor
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How do you solve quadratic equations?

A typical GCSE question will give you an equation in the from ax 2 + bx + c, x 2 - 8x + 15 = 0 for example, and ask you to solve the possible value of X. To do this we need to split the equation into two hal...
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Answered by Tutor55115 D. • Maths tutor
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How do you solve the following simultaneous equations? Equation 1: 2x + 3y = 13 Equation 2: 3x - y = 3

There are various ways to solve simultaneous equations. The two easiest are by elimiation and by substitution. By Elimation When solving by elimination you want to ensure that you only have one variable (x o...
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Answered by Luke S. • Maths tutor
9501 Views

What is the difference between an alkene and an alkane?

Both alkenes and alkanes are chains of carbon and hydrogen molecules. The chains can be different lengths and each length chain has a different name. An alkene is a chain which has a double bond between two ...
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Answered by Emily H. • Chemistry tutor
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