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If some magnesium oxide had escaped from The Crucible would the percentage composition calculation of magnesium be too high or too low?
Wiki User
∙ 15y ago
The percent of Mg calculated will be too high.
Let's say that you reacted 1.00 g of Mg and made some MgO, but so much MgO escaped as smoke that only 1.00 g of MgO was left. You would then conclude from the numbers that the mass of O in the MgO was zero!
This would lead you to conclude that the percent of Mg in the MgO was 100 %, which is silly and clearly in error. Although this is an extreme example, it illustrates that the loss of MgO as smoke from the crucible leads to a percent of Mg (calculated) that is above the expected 60.3 %.
Wiki User
∙ 15y ago
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What combined wih the magnesium when it was ignited in The Crucible?
oxygen. O2 was combined with magnesium when it ws heated in the crucible
Why is it essential for magnesium chloride solution in the crucible to be heated slowly?
If the solution is not heated slowly, the solution could boil over resulting in lost mass and calculation errors
Why must covering the crucible with its lid as soon as the magnesium starts burning?
why Covering the crucible with its lid as soon as the magnesium starts burning
Why should you not lift the lid of the crucible to let the smoke out while burning magnesium?
you should :)
Why must you make sure the white smoke does not escape from the crucible when burning the magnesium ribbon?
Inhalation of magnesium oxide fumes can cause metal fume fever .
How will fumes escape from The Crucible affect the weight of magnesium oxide?
how will fumes from the crucible affect the weight of magnesium
What combined wih the magnesium when it was ignited in The Crucible?
oxygen. O2 was combined with magnesium when it ws heated in the crucible
Why is it essential for magnesium chloride solution in the crucible to be heated slowly?
If the solution is not heated slowly, the solution could boil over resulting in lost mass and calculation errors
Why must covering the crucible with its lid as soon as the magnesium starts burning?
why Covering the crucible with its lid as soon as the magnesium starts burning
What element combines with Magnesium when heated in a crucible?
oxygen...it forms magnesium oxide
Why is water added to The Crucible in order to complete the conversion to magnesium oxide?
Water is added to the crucible to convert magnesium (Mg) to magnesium oxide (Mg(OH)2) because when magnesium reactions with air, it also reacts with the nitrogen (N2) in the air to form magnesium nitride (Mg3N2).3 Mg + N2 --> Mg3N2By adding water to the crucible containing the magnesium nitride, the magnesium nitride will become magnesium hydroxide. The ammonia gas produced will rise out of the crucible, eliminating the nitrogen.Mg3N2 + H2O --> 3Mg(OH)2 + 2NH3After heating the magnesium hydroxide, the product becomes just magnesium oxide.3Mg(OH)2 + heat --> MgO + H2OIn other words, when water is added, the nitrogen will react with the water, causing it to form ammonia and thus evaporating from the substance. This leaves behind the magnesium hydroxide, which becomes magnesium oxide and water after it is heated.
Analysis test for magnesium oxide?
Magnesium is weighed and then heated in a crucible. It reacts with oxygen to produce the oxide. It can be shown that there has been an increase in mass.
Why should you not lift the lid of the crucible to let the smoke out while burning magnesium?
you should :)
Why must you make sure the white smoke does not escape from the crucible when burning the magnesium ribbon?
Inhalation of magnesium oxide fumes can cause metal fume fever .
Products of Mg ribbon ASH plus HCl?
Mg ribbon ash indicates you heated magnesium ribbon in a crucible and had it render the oxide. MgO MgO + 2HCl --> MgCl2 + H2O
Alliteration in the crucible?
There is no alliteration used in the crucible.
Why must the crucible be cooled before weighing?
There are a few reasons: Safety, so individual does not get burned; a hot crucible could damage the scale; hot crucible could alter the substance being weighed; a hot crucible as the heat is released into surrounding air, it causes convection air currents when using an electronic scale than measures to multiple decimal places can give a miss reading and give the individual a larger error percentage in their experiment.
