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The nitrogen atom in both NH₃ and NH₂^- has 8 outer shell electrons. In NH₃, 3 pairs of these electrons are used in covalent bonding to hydrogen atoms and the re...

Firstly, look at what the question is asking you to find out. You need to work out the population from 1994. You are told that there was an increase from 1994 to 2014. Therefore you can take the populatio...

Sheila Birling is arguably one of the strongest and most complex characters in 'An Inspector Calls', due to her depth of feeling, and the change that her character undergoes throughout the play.
At ...

The equation of a line is given by the formula y= mx + c. Here, 'm' is the gradient of the line, and 'c' is the y intercept: where the line crosses the y axis. If two lines are parallel, then they must ha...

Plants carry out photosynthesis which contains the light dependant and light independent reaction . CO2 is used in the light independent reaction- the Calvin cycle. Co2 enters the stroma in a chloroplast ...