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How do you determine the shape and bond angle of an ammonia molecule?

Firstly, how many electrons does nitrogen have in its outer shell?... Nitrogen is in group 5, so 5.How many more electrons does nitrogen need to give it a full outer shell?... 8 electrons provide a full o...

Answered by Chemistry tutor
4102 Views

What was the significance of President Reagan in ending the Cold War?

The Triumphalist school of historical thought will argue that it was President Reagan's policies that forced the end of the Cold War. His massive increase in defence spending (about a 50% increase in the ...

RK
Answered by Ruby K. History tutor
3173 Views

Work out 2/3 - 1/4

numerator/denominator
First we need to find the common denominator (a number that can be divided by both 3 and 4)
3 x 4 = 12 (so our new, common, denominator is 12)
Whatever we do to the bo...

Answered by Maths tutor
13062 Views

Solve the Simultaneous equations 4x - y = 8 and x + y = 12

One basic method used here, when you have an equation and you add, subtract, multiply or divide one side of the equation from the equal sign, you must add, subtract, multiply or divide by the same value o...

CE
Answered by Cameron E. Maths tutor
5453 Views

Explain the process of mitosis.

Mitosis is a process that is normally explained in four stages - prophase, metaphase, anaphase and telophase. In prophase, the chromosomes condense and clump together in the middle of the...

ML
Answered by Megan L. Biology tutor
4178 Views

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