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How do I calculate the percentage by mass of a metal within an impure substance?

For this question we will look at Sodium Sulphite (Na2SO3) and its titration against Potassium Permanganate (KMnO4). This requires acidic conditions.

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SV
14483 Views

How is skeletal muscle contraction initiated and sustained?

Skeletal muscle contraction consists of two stages. The first is the initiation by the nervous system and the events leading up to myofibril interactions. The second is the actual shortening of sarcome...


How do you find the nth term formula for a sequence with non-constant difference?

Take the sequence;

9,    12,    19,    30,    ...

(1) The first step is always to look at difference between the terms;


9,    12,    19,...

RS
Answered by Richard S. Maths tutor
210169 Views

Using Context

Appropriate use of context is key in making your essay more two dimensional and mature. Context does not simply mean the historical background behind the text you're studying, but the literary environm...

AP
5553 Views

What is a separable verb and how is it formed?

In German some verbs are separable. This means that they are formed of two parts which can be separated. Some examples are:

ankommen (to arrive),

GH
Answered by George H. German tutor
3961 Views

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