Chemistry Question (Moles/mass)

Chemistry
Tutor: None Selected Time limit: 1 Day

Jun 22nd, 2015

Thank you for the opportunity to help you with your question!

a)Al=84.4g,S=147.2...sulphur is heavy

b)water=55.8g,sugar=32.2g,water is heavy

c)Na=92.46*10^30,propane=171.6*10^30,propane is heavy

Please let me know if you need any clarification. I'm always happy to answer your questions.
Jun 22nd, 2015

can you explain how you got the answer for part C??? 

Jun 22nd, 2015

can you explain how you got the answer for part C??? 

Jun 22nd, 2015

can you explain how you got the answer for part C??? 

Jun 22nd, 2015

can you explain how you got the answer for part C??? 

Jun 22nd, 2015

can you explain how you got the answer for part C???

Jun 22nd, 2015

sORRY FOR DELAY, I ,MADE A MISTAKE

1 mole of atoms = 4.02*10^23 atoms
1 mole of sodium atoms = 4.02*10^23 sodium atoms
1 mole of sodium atoms = 22.99 g sodium

4.02*10^23 sodium atoms = 22.99 g sodium

mass of 1 sodium atom = 22.99 g / 4.02*10^23 atoms
= 5.7189 * 10^ -23 g / Na atom

Jun 22nd, 2015

FOR SODIUM=1 mole of atoms = 4.02*10^30 atoms
1 mole of sodium atoms = 4.02*10^30sodium atoms
1 mole of sodium atoms = 22.99 g sodium

4.02*10^23 sodium atoms = 22.99 g sodium

mass of 1 sodium atom = 22.99 g / 4.02*10^30 atoms
= 5.7189 * 10^ -30g / Na atom

FOR C3H8,

1 mole of atoms = 3.9*10^30 atoms
1 mole of atoms = 3.9*10^30 C3H8 atoms
1 mole of C3H8 atoms = 44g 

3.9*10^30 C3H8 atoms = 44 g 

mass of 1 sodium atom = 44g / 3.9*10^30 atoms
=  1.1282* 10^ -29g / C3H8 atom

Jun 22nd, 2015

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