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Magnesium reacts with air to form a layer of Magnesium oxide which has to be removed before it can react with water.
lemass answered the question on January 21, 2019 at 08:22
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Date posted: January 21, 2019. Answers (1)
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In an experiment a piece of magnesium ribbon was cleaned with steel wool 2.4g of the clean ribbon was placed in a crucible and completely burnt in oxygen.after cooling the product weighted 4.0g.
(a)explain why it was necessary to clean the magnesium ribbon?
(b)what observation was made in the crucible after burning?
(c)why was there an increase in mass?
(d)write the equation for reaction which took place in the crucible?
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Date posted: December 30, 2018. Answers (1)
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Date posted: December 26, 2018. Answers (1)
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Date posted: December 20, 2018. Answers (1)
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Outline the physical properties of oxygen gas.
Date posted: December 20, 2018. Answers (1)
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A hydrocarbon consist of 92.3% carbon. Its molecular mass is 26. Calculate its molecular formula.
Date posted: December 16, 2018. Answers (1)
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Date posted: December 12, 2018. Answers (1)
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1. State what was observed
2. Name the process that took place
3....(Solved)
Crystals of sodium carbonate decahydrate were exposed to air for about four days
1. State what was observed
2. Name the process that took place
3. Write an equation for the reaction that occurred
Date posted: December 11, 2018. Answers (1)
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State the uses of ammonia.
Date posted: December 7, 2018. Answers (1)
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Date posted: November 19, 2018. Answers (1)