calculate the number of molecules in 4g of oxygen.
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Answered by
178
To calculate the number of molecules in 4g of oxygen, we have,
Moles of oxygen = 4/32 = 0.125mol,
Molecules of oxygen = 0.125 * 6.022 * 10^23 = 7.52 * 10^22.
Oxygen's atomic weight is 16.00 amu where 1 mole of oxygen is
6.02 x 1023 atoms of oxygen 1 amu = 1.661 x 10-24g.
Moles of oxygen = 4/32 = 0.125mol,
Molecules of oxygen = 0.125 * 6.022 * 10^23 = 7.52 * 10^22.
Oxygen's atomic weight is 16.00 amu where 1 mole of oxygen is
6.02 x 1023 atoms of oxygen 1 amu = 1.661 x 10-24g.
Answered by
50
given,
mass= 4 grams
molar mass= 16*2= 32
number of moles= given mass/ molar mass
= 4/32
= 8 moles
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