## Stoichiometry % Yields and Reactants

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sheilamrohrbach
Newbie
Posts: 2
Joined: Sun Mar 28, 2021 8:41 am

### Stoichiometry % Yields and Reactants

sos.png (124.51 KiB) Viewed 68 times
Can someone please help me? I've been trying to solve this since last night but my numbers are just so far.
ChenBeier
Distinguished Member
Posts: 677
Joined: Wed Sep 27, 2017 7:25 am
Location: Berlin, Germany

### Re: Stoichiometry % Yields and Reactants

All results are correct. What is the problem.?
sheilamrohrbach
Newbie
Posts: 2
Joined: Sun Mar 28, 2021 8:41 am

### Re: Stoichiometry % Yields and Reactants

I need the solution. I've been trying since last night but my numbers are off
ChenBeier
Distinguished Member
Posts: 677
Joined: Wed Sep 27, 2017 7:25 am
Location: Berlin, Germany

### Re: Stoichiometry % Yields and Reactants

For a) you calculate the mol of 405g PCl3 and according the equation you calculate how much Chlorine and phosphorous you need. Then you calculate the 100g P4 and 100 l Cl2 and compare. Dont forget the stiochometric factors.
n =m/M, n = mass/ molar mass.
b) is the difference of the theoretic and practical value.
c) similar, practical value of producct divided by theoretisc value of product
d) similar calculation with new values
e) dito