how many molecules are in 29.777 g of hydrogen peroxide
2006-10-05 09:20:23 · 8 answers · asked by rnjes21 2 in Science & Mathematics ➔ Chemistry
molecular weight of H2O2 = 34
29.777g/34 = 0.876 moles
6.023x10^23 molecules/mole x 0.876 mole = 5.275 x 10 ^23 molecules
2006-10-05 09:24:19 · answer #1 · answered by Jabberwock 5 · 0⤊ 0⤋
1. Find the molecular weight of H2O2
2. Find the number of moles in 29.777 g of H2O2.
3. One mole containes 6.02 x 10^(23) molecules [Avogadro's Number].
4. Multiply moles x Avogadro's Number to get the answer.
2006-10-05 16:33:15 · answer #2 · answered by Dr. J. 6 · 0⤊ 0⤋
H2o2 (Hydrogen peroxide) comes in various strengths. I think the home solution of h2o2 is 2 percent. You would need to know that first.
2006-10-05 16:23:00 · answer #3 · answered by bradthepilot 5 · 0⤊ 1⤋
56
2006-10-05 16:21:41 · answer #4 · answered by Anonymous · 0⤊ 1⤋
I'm not sure but I think you need to know the concentration of the solution.
2006-10-05 16:26:23 · answer #5 · answered by pablo h 3 · 0⤊ 0⤋
Number of moles of H2O2 = 29.777 g / 34 g/mol = 0.875 moles
Number of atoms of H2O2 = (0.875 moles) (6.02 x 10^23) =
............................................= 5.26 x 10^23 atoms
2006-10-05 16:24:22 · answer #6 · answered by CHESSLARUS 7 · 0⤊ 0⤋
www.lcusd.net/lchs/mewoldsen/MoleExamples
This site will give you the formulas.
2006-10-05 16:28:26 · answer #7 · answered by mixedlinda 1 · 0⤊ 0⤋
ABOUT 0.86 MOLES x 6.02 x10^23MOLECULES
2006-10-05 16:24:33 · answer #8 · answered by peicer u 2 · 0⤊ 0⤋