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What are the effects of pressure changes for a system in equilibrium.

An increase in pressure will cause the equilibrium to shift towards the side with the smaller number of molecules. A decrease in pressure causes the equilibrium to shift towards the side with larger number o...
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Explain how electrons are arranged.

Electrons occupy energy levels/shells. Electrons occupy the lowest level (first one from the nucleus) first which can occupy a maximum of 2 electrons. After the first level, electrons fill up the other shell...
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Explain how the presence of starch can be detected in plants.

Plants store glucose produced by photosynthesis in the form of starch. To test the presence of starch in plants, first heat a leaf in boiling water for 30 seconds followed by boiling it in ethanol for a few ...
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Describe how pregnancy tests sticks work.

Pregnant women produce a hormone called HCG, found in their urine. Monoclonal antibodies are found at the end of pregnancy test sticks. When a pregnant woman urinates on the stick, the monoclonal antibodies(...
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A particle, P, moves along the x-axis. At time t seconds, t > 0, the displacement, is given by x=1/2t^2(t ^2−2t+1).

Find the times when P is instantaneously at rest.In order to solve this question we first have to multiply out in order to obtain the full expression of x which will be x = 1/2t^4 -2t^3+1/2t^2. Now we differ...
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Answered by Aleksander K. • Maths tutor
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