how many atoms are there in .33. moles of water? can you please help me do this and work it out so i can understand it
2006-10-28 13:03:14 · 6 answers · asked by John L 1 in Science & Mathematics ➔ Chemistry
avogadro's number says there are 6.022*10^23 particles per mole of particles. So if you have .33moles, then you have .33*6.02*10^23 particles. Now these particles are water molecules, since you said .33 moles of water. There are 3 atoms per molecule in water. 2 H, 1O. So, simply multiply the number of molecules that you found above by 3 and you have the number of atoms.
2006-10-28 13:08:39 · answer #1 · answered by Greg G 5 · 2⤊ 0⤋
As one mole of water has 6.02 x 10^23 molecules of water, then one third of that would be about 2 x 10^23 molecules.
But each molecule has three atoms in it (2 Hydrogen, 1 Oxygen) so the number of atoms is 3 x 2 x 10^23 or about 6.02 x 10^23 atoms.
In other words the 0.33 and the 3 essentially cancel each other out.
2006-10-28 20:14:31 · answer #2 · answered by Alan Turing 5 · 0⤊ 0⤋
it is a known fact that 1 Mole = 6.02 x 100000000000000000000000 atoms/molecules/ions etc
to keep things simple
1 mole = 6.02 x 10^23
now
u have 0.33mole of water
therefore number of atoms is
0.33 x 6.02 10^23
= 1.9866 x 10^23
2006-10-28 20:07:21 · answer #3 · answered by amandac 3 · 2⤊ 0⤋
In every mole there are Na = 6.02x10^23 molecules so there are 0.33x6.02x10^23 molecules of H2O in 0.33 mol of H2O. Now, because there are three atoms (2 hydrogen and one oxygen atom) in every molecule of water we have:
3x0.33x6.02x10^23 = 6.02x10^23 total atoms in 0.33 moles of water.
2006-10-28 20:12:42 · answer #4 · answered by Dimos F 4 · 0⤊ 0⤋
THIS IS A GUESS BASED ON THE PROCESS OF COMBINING THE MOLAR WEIGHTS OF HYDROGEN AND WATER. 12+6=18 I BELIEVE 18 ATOMS
2006-10-28 20:07:32 · answer #5 · answered by pippinpapadopidopilious 1 · 0⤊ 1⤋
Sorry, in 8th grade. Try Yahoo Education if you can't get a good answer.
2006-10-28 20:05:43 · answer #6 · answered by Anthony 4 · 0⤊ 1⤋