+0  
 
+1
412
3
avatar

how many atoms are there in 3.4 grams of ammonia

Guest Mar 24, 2017
Sort: 

3+0 Answers

 #1
avatar+104 
0

Ammonia is NH3 

 

The molar mass (reading from the periodic table) is 17.031g/mol

 

Therefore 3.4 grams of ammonia is equal to 0.1996359579590159 moles of ammonia.

 

Multiplying this by 6.022 * 1023 we get 120220773882919374980000 molecules (or 1.2022 * 1023 molecules).

 

In 1 molecule of ammonia there are 4 atoms, so in total there are approx. 4.8088 * 1023 atoms.

 

The measurement was made using 2 significant figures, so we can only be sure about this result to 2 significant figures, therefore the amount of atoms in 3.4g of ammonia is approx. 4.8 * 1023 atoms.

Kreyn  Mar 24, 2017
edited by Kreyn  Mar 24, 2017
 #2
avatar
0

https://www.wolframalpha.com/input/?i=how+many+atoms+is+in+3+grams+of+ammonia

Type in any other element instead of "ammonia" to get that too, in this case it's approxamitely 4.243*10^23 atoms.

Guest Mar 24, 2017
 #3
avatar
0

Wolfram is great! I asked it what percentage of the average banker is blarney. Result: 31.32%

 

I asked it what is the percentage of blarney in a certified Blarney Banker. Result: 99.44%  

Guest Mar 24, 2017

12 Online Users

We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  See details