How many atoms are there in 8.3 g Si?

Question

anonymous · Answer

Do you mean the number of moles?

anonymous · Answer

No, I think that you have to convert from grams to moles to particles (atoms, molecules) I just don't remember whether to multiply or divide

anonymous · Answer

well since g was given, in order to find the no. of moles, you need to find the molar mass of si ( just type it in on google). The formula is $$\frac{ mass}{ molar mass  }$$ and from there you can find the no. of molecules given $$\frac{ no. of moles }{ avogadros }$$
by the way avogadros number is 6.02 $$\times 6.02\times 10^{23}$$

that's about it!

anonymous · Answer

correction its one 6.02 forget about the other one

anonymous · Answer

Did this help?

anonymous · Answer

When you're referring to mass/molarmass, the numerator would be the grams (8.3)? There fore the equation would be $$\frac{ 8.3 }{ 28.0855 }$$ ?

anonymous · Answer

yes correct!

anonymous · Answer

Alright, thanks so much for everything! :D

anonymous · Answer

your welcome! :)