happykiddo
  • happykiddo
How do I figure out the number of atoms in element, when I know the molar mass is 3.30 ???
Chemistry
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
whats the element ?
happykiddo
  • happykiddo
Krypton
anonymous
  • anonymous
so you have 3.3 moles of Krypton, and you want to find how many atoms are there, is tha t right ?

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happykiddo
  • happykiddo
Yes
anonymous
  • anonymous
replace mole wid Avogadro number
happykiddo
  • happykiddo
Ok
anonymous
  • anonymous
1 mole = 6.022 × 10^23 items
anonymous
  • anonymous
just like, 1 dozen = 12 items
anonymous
  • anonymous
3.3 moles of Kr = 3.3 x 6.022 × 1023 atoms
happykiddo
  • happykiddo
Thanks, a bunch. :)
happykiddo
  • happykiddo
We're did you get1023
happykiddo
  • happykiddo
Please answer me , I need some clarification .
anonymous
  • anonymous
3.3 moles of Kr = \(3.3 \times 6.022 × 10^{23}\) atoms
anonymous
  • anonymous
its like that
anonymous
  • anonymous
\(1\ mole = 6.022 \times 10^{23} \) atoms
happykiddo
  • happykiddo
Oh oops ok thank you very much. :)
anonymous
  • anonymous
wlc :)
happykiddo
  • happykiddo
So the answer is 19x10 to 23 atom According to significant figures
anonymous
  • anonymous
you wanto show it in scientific notation ?
happykiddo
  • happykiddo
So the answer is 19 x 10 to 23 power According to significant figures
anonymous
  • anonymous
\(3.3 \times 6.022 × 10^{23}\) \(19.8726 \times 6.022 × 10^{23}\) \(1.98726 \times 6.022 × 10^{24}\)
anonymous
  • anonymous
thats scientific notation, we must change that 19.xxxx to 1.9xxxx
happykiddo
  • happykiddo
Oh yeah forget .....well really once again thank you.
anonymous
  • anonymous
yw

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