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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?
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 %.
What else can I help you with?
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 is distilled water added to the crucible after igniting the magnesium metal?
Distilled water is added to the crucible after igniting magnesium metal to ensure that the magnesium oxide produced reacts with water to form magnesium hydroxide, which can be easily analyzed. The addition of water also helps to stop the reaction and cool down the crucible, preventing further oxidation of magnesium. This step is crucial for accurate measurement and analysis of the resulting compounds in the experiment.
Why should you not lift the lid of the crucible to let the smoke out while burning magnesium?
you should :)
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
What element combines with Magnesium when heated in a crucible?
When magnesium is heated in a crucible, it combines with oxygen from the air to form magnesium oxide (MgO).
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
How will fumes escape from The Crucible affect the weight of magnesium oxide?
The fumes escaping from The Crucible (during heating magnesium) will contain magnesium oxide (MgO). The weight of magnesium oxide formed inside The Crucible will decrease due to the loss of mass from the escaping fumes. It is essential to account for this weight loss when calculating the final mass of magnesium oxide obtained.
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 reactions occur when burning Mg in a crucible?
When burning Mg in a crucible, magnesium reacts with oxygen in the air to form magnesium oxide. The reaction produces a bright white light and heat. The magnesium metal is oxidized during the reaction, resulting in the formation of a powdery white residue of magnesium oxide in the crucible.
Why is distilled water added to the crucible after igniting the magnesium metal?
Distilled water is added to the crucible after igniting magnesium metal to ensure that the magnesium oxide produced reacts with water to form magnesium hydroxide, which can be easily analyzed. The addition of water also helps to stop the reaction and cool down the crucible, preventing further oxidation of magnesium. This step is crucial for accurate measurement and analysis of the resulting compounds in the experiment.
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.
Why does crucible and its contents gain mass as a result of heating magnisium in the air?
When magnesium is heated in the air, it undergoes a chemical reaction with oxygen to form magnesium oxide. This reaction increases the total mass of the crucible and its contents due to the addition of oxygen atoms from the air. The increase in mass is a result of the combination of magnesium and oxygen to form magnesium oxide.
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 .
If some of the hydrate splatters out of crucible would the calculation percent of water be higher or lowel why?
If some of the hydrate splatters out of the crucible, the calculation of the percent of water would be lower. This is because some of the hydrate (which contains water) has been lost, so the total amount of water present in the sample is reduced.
