Thursday
April 24, 2014

Homework Help: Chem

Posted by Chris on Tuesday, February 6, 2007 at 3:28pm.

Superscript 15
How many moles of Pb is 9.3 X 1015 atoms of pb?


1 mol of Pb atoms will contain 6.02 x 10^23 atoms of Pb.
So 9.3 x 10^15 atoms x (1 mol/6.02 x 10^23 atoms) = ?

note how the unit "atoms" cancel leaving mol and that is the unit we want.

thanks What is the molar mass of ethane, C2H6?

C'mon now. (2*12)+(6*1)=??

thanks..alot

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

chemistry - How many moles of Pb is 9.3 x 10^15 atoms of Pb?
college chemistry - If 0.490 mol of Pb(NO3)2 and 130 mL of 1.08 M aqueous NaI ...
chemistry - OKOK I know that I have posted this question but I just don't ...
Chemistry - A mettallurgist decided to make a special alloy. He melted 30 grams ...
chemistry pap - How many atoms of lead (Pb) are present in 0.75 moles?
Chem - At 298 K, Pb(IO3)2(s) ↔ Pb2+(aq) + 2IO3-(aq) Ksp = 2.6x 10-13 Pb2+(...
chemistry - How many grams of lead(II) iodate, Pb(IO3)2 (formula weight = 557.0 ...
chemistry check 2 - I know you've read this question too many times already but ...
Chemistry - If 150 mL of 1.73 M aqueous NaI and 235 g of Pb(NO3)2 are reacted ...
chemistry - suppose you have 58 g of pb? what number of moles of pb is present

Search
Members