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Describe what you would see when a piece of potassium is placed on water. Why does this happen?

THe potassium would move around on the water and fizz. This is because it is an alkali metal that reacts with the water. 2K + 2H2O --> 2KOH + H2. The fizzing is the result of this reaction. Discussion ...

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Answered by Ndaba M. Chemistry tutor
7921 Views

How does the sliding filament theory work?

A nerve impulse in the sarcoplasmic reticulum causes calcium ions to move out of it into the muscle cells where it binds to tropmyosin/troponin causing it to move and reveal the actin filament. The myosin...

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Answered by Charlotte K. Biology tutor
7493 Views

What do I include in my essay?

Research an artist for a certain characteristic about them that inspires your work, such as a theme or technique. Explain how this links to your own work and how this artist will help you develop your own...

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Answered by Charlotte K. Art tutor
1936 Views

How do you write a good introduction and conclusion?

In an exam you shouldn't spend too much time on your introduction and conclusion as most of your marks come from the main bulk of the essay. A good place to start with an introduction is looking at the ke...

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Answered by Charlotte N. English tutor
5850 Views

Where does the direct object pronoun go in a sentence?

In Spanish, the direct object pronoun replaces the object you are talking about. In a sentence, it is always placed before the verb. For example, '(Tú)llevas el libro' = you carry the book. This becomes, ...

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Answered by Elena P. Spanish tutor
2482 Views

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