Two step mole conversions

Chemistry and homework help forum.

Organic Chemistry, Analytical Chemistry, Biochemistry, Physical Chemistry, Computational Chemistry, Theoretical Chemistry, High School Chemistry, Colledge Chemistry and University Chemistry Forum.

Share your chemistry ideas, discuss chemical problems, ask for help with scientific chemistry questions, inspire others by your chemistry vision!

Please feel free to start a scientific chemistry discussion here!

Discuss chemistry homework problems with experts!

Ask for help with chemical questions and help others with your chemistry knowledge!

Moderators: expert, ChenBeier, Xen

Post Reply
PleaseHelp
Newbie
Newbie
Posts: 1
Joined: Wed Feb 03, 2021 11:23 am

Two step mole conversions

Post by PleaseHelp »

Please help me solve im stuck
Attachments
Screenshot (149).png
Screenshot (149).png (12.91 KiB) Viewed 203 times
User avatar
ChenBeier
Distinguished Member
Distinguished Member
Posts: 537
Joined: Wed Sep 27, 2017 7:25 am
Location: Berlin, Germany

Re: Two step mole conversions

Post by ChenBeier »

Not really clear what is meant here. If I grain the Calciumnitride I can get a lot of particles depending on the grain size.

The formula is Ca3N2. You can calculate the mole from the given mass. 1 mol is 6,023x10^23 particles.
User avatar
Dhamnekar Winod
Sr. Member
Sr. Member
Posts: 35
Joined: Sat Nov 21, 2020 10:14 am
Location: Mumbai[Bombay],Maharashtra State,India

Re: Two step mole conversions

Post by Dhamnekar Winod »

A sample of Calcium Nitride Ca3N2 📖having a mass 6.78 grams have 2.75e22 atoms which is= 0.0457 mole.
Last edited by Dhamnekar Winod on Fri Feb 05, 2021 6:03 am, edited 2 times in total.
Any science consists of the following process. 1) See 2)Hear 3)Smell,if needed 4)Taste, if needed 5)Think 6)Understand 7)Inference 8)Take decision [Believe or disbelieve, useful or useless, true or false, cause or effect, any other criteria]
User avatar
ChenBeier
Distinguished Member
Distinguished Member
Posts: 537
Joined: Wed Sep 27, 2017 7:25 am
Location: Berlin, Germany

Re: Two step mole conversions

Post by ChenBeier »

Calculation is wrong. Molar mass of Ca3N2 is 148 g/mol.
6,78 g is then 6,78g/148 g/mol = 0,00452 mol what guids to 2,76 x 10^22 particles.
User avatar
Dhamnekar Winod
Sr. Member
Sr. Member
Posts: 35
Joined: Sat Nov 21, 2020 10:14 am
Location: Mumbai[Bombay],Maharashtra State,India

Re: Two step mole conversions

Post by Dhamnekar Winod »

I am sorry. I computed for CH₃N₂. I shall edit my answer now.
Thanks for finding out error in the computation
Any science consists of the following process. 1) See 2)Hear 3)Smell,if needed 4)Taste, if needed 5)Think 6)Understand 7)Inference 8)Take decision [Believe or disbelieve, useful or useless, true or false, cause or effect, any other criteria]
Post Reply