# After adding water to convert Mg3N2 to magnesium oxide, the student did not heat the crucible for long enough, and failed to convert all the Mg3N2 to magnesium oxide?

Here’s what I got.

So, you’re doing a lab on determining the of magnesium oxide, ##”MgO”_2##, by heating a strip of magnesium metal in the presence of air.

As you know, nitrogen gas, ##”N”_2##, is far more abundant than oxygen gas, ##”O”_2##, in air, which means that some of the magnesium will react with nitrogen gas to form magnesium nitride, ##”Mg”_3″N”_2##.

Despite the fact that nitrogen is present in a greater proportion, is is not as reactive as oxygen, so you can expect to see much more magnesium oxide formed upon heating.

Now, some of the magnesium present in the initial sample will now be a part of the magnesium nitride. To convert the magnesium nitride to magnesium oxide, you first need to add water.

Magnesium nitride will react with water to form magnesium hydroxide, ##”Mg”(“OH”)_2##, and ammonia, ##”NH”_3##

##”Mg”_3″N”_text(2(s]) + 6″H”_2″O”_text((l]) -> 3″Mg”(“OH”)_text(2(s]) + 2″NH”_text(3(g]) uarr##

Heating the magnesium hydroxide will convert it to magnesium oxide

##”Mg”(“OH”)_text(2(s]) -> “MgO”_text((s]) + “H”_2″O”_text((g])##

You know that not all magnesium nitride was converted back to magnesium oxide.

This means that the crucible will contain magnesium oxide and some of the water you added to convert the magnesium nitride to magnesium hydroxide and ammonia.

The total mass of the oxide will come you to be bigger than what it actually is.

Simply put, the ratio between magnesium and oxygen in the oxide will appear to be smaller than in reality, since you will conclude that for the initial sample of magnesium you have more oxygen in the oxide than you actually have.

Therefore, the ratio between magnesium and oxygen will come out to be too low.

## Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
\$26
The price is based on these factors:
Number of pages
Urgency
Basic features
• Free title page and bibliography
• Unlimited revisions
• Plagiarism-free guarantee
• Money-back guarantee
On-demand options
• Writer’s samples
• Part-by-part delivery
• Overnight delivery
• Copies of used sources
Paper format
• 275 words per page
• 12 pt Arial/Times New Roman
• Double line spacing
• Any citation style (APA, MLA, Chicago/Turabian, Harvard)

# Our guarantees

Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.

### Money-back guarantee

You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.

### Zero-plagiarism guarantee

Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.

### Free-revision policy

Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.

Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.

### Fair-cooperation guarantee

By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.

Order your essay today and save 10% with the coupon code: best10