Homework Help: CHEMISTRY ANYONE THAT CAN HELP!!!!!!!!!!!!!!!!!!!

Posted by john on Wednesday, February 20, 2008 at 9:47pm.

and we had to round this was the question was to again
calculate the number of moles in each of the following masses
a)64.1 g of aluminum
b)28.1 g of silicon
c)0.255 g of sulfur
d)850.5 g of zinc
a) 64/27 = 2.4 mols b) 28.1g/28=1.0 mol c) 0.255/32=.0080 d)850.5/65 =13.076. I think i made some mistakes can u see if im on the right track or correct me if im wrong.. thanks in advance
also the answer has to be rounded and written in scientific notation form which ive failed and need help

For Further Reading

CHEMISTRY ANYONE THAT CAN HELP!!!!!!!!!!!!!!!!!!! - DrBob222, Wednesday, February 20, 2008 at 9:49pm
answered below.

Answer this Question

Related Questions

Chemistry - Calculate the number of moles of Co^+2 are there in the equation Co(...
chemistry need it proofread.. - and we had to round this was the question was to...
chemistry- DR BOB - and we had to round this was the question was to again ...
Chemistry - I don't really know how to go about this, Please help 1. ...
Chemistry - An aqueous solution contains 2.0 % NaCl by mass. (1) Calculate the ...
chemistry - 1) 14 moles of Ar 12 moles of N2 2 moles of BF3 If the total number ...
chemistry - How many moles are in 13grams of C6H6. should this question be ...
chemistry - When 1.24g of an organic compound with the formula CxHyOz is burned ...
Chemistry - I am a bit lost as to how to go about answering this question. Any ...
sci/chemistry - when 1.87 g of gypsum(hydrated calcium sulfate) was heated to ...

For Further Reading

First Name:
School Subject:
Answer: