HELP PLEASE?!
A sample of gold (Au) has a mass of 35.12 g. a. Calculate the number of moles of gold (Au) in the sample. . b. Calculate the number of atoms of gold (Au) in the sample

Question

HELP PLEASE?!
A sample of gold (Au) has a mass of 35.12 g. a. Calculate the number of moles of gold (Au) in the sample. . b. Calculate the number of atoms of gold (Au) in the sample

solomonzelman · Answer

ohh, I didn't do those for so long.

studygurl14 · Answer

Yeah, sorry htat it is in the math area, but it is very much like math

anonymous · Answer

@StudyGurl14 pzl come help me

anonymous · Answer

How large is the sample?

studygurl14 · Answer

35.12 g of Au @swagmaster47

anonymous · Answer

Oh right sorry. First you need the molar mass of Gold

anonymous · Answer

Which is 196.96655

anonymous · Answer

Then you have (35.12/196.96655)6.02E23

solomonzelman · Answer

yes, it is about that.

solomonzelman · Answer

$\large\color{black}{  35.12\div 196.96655  }$

solomonzelman · Answer

I think this is what you do to determine the number of moles when you have the molar mass, and have the mass of gold of 35.12.
(both the molar mass and gold, in this case is in grams)

solomonzelman · Answer

I mean the molar mass of gold, and the mass of your gold are in grams.

studygurl14 · Answer

How do you find the molar mass of gold?

studygurl14 · Answer

Like where'd you get 196.96655

surry99 · Answer

the 196.97 is the molar mass for gold which comes from the periodic table.

solomonzelman · Answer

attachment

solomonzelman · Answer

yes it is on it.

studygurl14 · Answer

Oh, thank you two. :)

solomonzelman · Answer

thank you, *you two:) like that jk

not a problem...

studygurl14 · Answer

haha :)