One mole is 6.02*1023 atoms. So to find out how many moles are in 1.43*1024 , it's as simple as dividing the second number by the first. This results in 2.38 moles (rounded to significant figures)
1.63 X 1024 atoms Na (1 mole Na/6.022 X 1023)
= 2.71 moles of sodium
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One mole. This big number 6.022 X 1023 is Avogadros Number, the number of molcules or atoms in a mole.
1,69.1023 sodium atoms are equal to 0,28 moles.
1 mole. Avogrado's constant.
one
2 moles of NaCl, of course. Cl would definitely limit in this one to one reaction and you would have 19998 moles Na in excess.
0.21705 moles. There are 22.9898 grams sodium in 1 mole.
Mass of 2 moles of Na = 2 x atomic mass of Na = 2 x 23.0 = 46.0g
2 moles of Na2O are produced. 4 moles of Na react with 1 mole of O.
1.8 moles
The answer is 0,25 moles.
one
0.013089701
2 moles of NaCl, of course. Cl would definitely limit in this one to one reaction and you would have 19998 moles Na in excess.
Balanced equation. 4Na + O2 -> 2Na2O 10 moles Na (2 moles Na2O/4 moles Na) = 5.0 moles Na2O produced
0.125 moles x 6.02x10^23 atoms/mole = 7.53x10^22 atoms
Molar Mass NaCl is 58.5g, 39.3% Na (5.90g), Molar Mass Na is 23.0g, 5.90/23.0 = 0.256 moles
0.188 moles Na (6.022 X 10^23/1 mole Na) = 1.13 X 10^23 atoms of sodium
0.21705 moles. There are 22.9898 grams sodium in 1 mole.
Mass of 2 moles of Na = 2 x atomic mass of Na = 2 x 23.0 = 46.0g
2 moles of Na2O are produced. 4 moles of Na react with 1 mole of O.