10 moles LiBr (6.022 X 1023/1 mole LiBr)
= 6.022 X 1024 atoms of lithium bromide
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This is equivalent to 1,4 moles.
2,50 moles of silicon contain 15,055352142.10e23 atoms.
1,0.10e9 atoms is equivalent to 0,166.10e-14 moles.
Seventeen moles of hydrogen correspond to 204,75.10e23 atoms.
10,0 moles of bromine atoms contain 60,22140857.1023 atoms.Attention: valid for bromine atoms !.
Not atoms of LiBr; formula units is correct.1 mol = 6,022 140 857.10e23 (molecules, atoms, ions); this is the Avogadro number.6,022 140 857.10e23 x 1,25 = 7,52767607125.10e23 formula units of LiBr
7,61 g LiBr contain 6,99 g Br.6,99 g Br is 0,087 moles.
No moles of BaCO3 are found in any amount of Li.
(7.6g LiBr)/(86.84g/mol) x (1molLi/1molBr) = .0875 mol Li or with sig figs, .088
1,638 moles contain 9,864266723766.10e23 atoms.
20 moles
This is equivalent to 1,4 moles.
There are twice as many oxygen atoms as carbon atoms in carbon dioxide, so 100.0 moles of carbon dioxide would contain 200.0 moles of oxygen atoms.
2,50 moles of silicon contain 15,055352142.10e23 atoms.
1,0.10e9 atoms is equivalent to 0,166.10e-14 moles.
Seventeen moles of hydrogen correspond to 204,75.10e23 atoms.
8.93 1021 atoms equal 0,0148 moles.