6.02 X 1023 particles per mole X .75 moles = 4.52 X 1023 molecules.
To do this, you need to know the molecular weight of the element you're dealing with, by adding up the atomic weights of the elements involved (found on any Periodic Table). The molecular weight is the mass in grams of the element in one mole - this will provide you with a conversion factor. So take the measurement in moles and multiply it by the atomic weight to convert to grams. Really what you're doing is dividing the number by 1 mole, and multiplying it by the equivalent of one mole, the molecular weight. That's the thought process behind unit analysis and how you get your "units to cancel".
In this case, the answer is about 80.5 grams C2H6O.
This conversion requires a specific element. To convert moles to gram, you need to take the number of moles and multiply it by the Atomic Mass. If you do not have the atomic mass, you cannot go from moles to gram or grams to moles.
There are 6.25 moles of C-12 in 75g of C-12.
Quite a few!
6.75 moles C2H6 (6.022 X 10^23/1 mole C2H6)
= 4.06 X 10^24 atoms
1 mole H2O = 18.0153g H2O
75g H2O x (1mol H2O/18.0153g H2O) = 4.2mol H2O
1 mole CO2 = 6.022 x 1023 molecules
1.75mol CO2 x 6.022 x 1023 molecules/mol = 1.05 x 1024 molecules CO2
Molar mass of water is 18gmol-1. so there are 13.5 grams.
76 (g) over 12.0 (g/mol) = 6.3 mol
The answer is 13,5 g.
9.02 X 10^23 atoms Cl2 (1mol Cl2/6.022 X 10^23) = 1.50 moles Cl2
1
0,39 moles of gallium contain 2,34863493423.10e23 atoms.
The number of chlorine atoms in 2,00 moles of CCl4 is 48,113.10e23.
2,2 moles of plutonium: 13,248711938.1023 atoms.
107,43.10e+23 atoms
How many moles of atoms are contained in 382 g Co
5,26 moles of oxygen contain 31,676.10e23 atoms.
Two moles of neon contain 12,044281714.10e23 atoms.
6.00 moles
1molecule of C2H6 contains 2 carbon atoms
The answer is 2,17 moles carbon.
2.26*1024
NH3 is balanced at 1:3, so in 3 moles NH3 there are 3*3 = 9 moles H atoms
382 g Co contain 6,482 moles.
2.36 moles x 6.022*10^23 atoms/mole. Moles cancel and you are left with 1.42*10^24 xenon atoms.
The number of phosphorus atoms is 63,181.10e23.