A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

20. The following is a Limiting Reactant problem: Magnesium nitride is formed in the reaction of magnesium metal with nitrogen gas in this reaction: 3 Mg(s) + N2(g)  Mg3N2(s) How many grams of product are formed from 2.0 mol of N2 (g) and 8.0 mol of Mg(s)? Show all calculations leading to an answer

  • This Question is Closed
  1. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Can you help with this one @Photon336

  2. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    or @aaronq

  3. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @Missiey

  4. Rushwr
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 3

    This the only equation we are gonna use here okai ? no. of moles = mass/ molar mass \[n = \frac{ m }{ M }\] As we can see the molar ratios of Mg:N is 3:1 That means 3 moles of magnesium will react with 1 mole of nitrogen. When u have 2 moles of nitrogen that means it will react with 6 (2*3) moles of magnesium. But we have 8 moles of magnesium. So that means we have 2 moles (8-6) moles in excess. Now look at the stoichiometric number of magnesium nitride. It is 1 . Look at the molar ratio between nitrogen and magnesium nitride that is 1:1 That means one mole of nitrogen reacts to form 1 mole of magnesium nitride. Therefore no. of moles of nitrogen = no. of moles of magnesium nitride. Molar mass of magnesium nitride = 101gmol^-1 the no. of moles = 2moles \[ mass = moles* molar mass\] \[mass = 2* 101 = 202g\]

  5. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    thank you !

  6. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.