Advertisements
Advertisements
प्रश्न
If 16 g of oxygen contains 1 mole of oxygen atoms, calculate the mass of one atom of oxygen.
Advertisements
उत्तर
Given:
Mass of 1 mole of oxygen = 16g
We know that 1 mole of oxygen contains 6.022 × 1023 oxygen atoms.
Mass of 6.022 × 1023 oxygen atoms = 16g
Mass of 1 oxygen atom = 16/6.022 × 1023
Hence, 1 atom of oxygen molecule weighs 2.65 × 10-23 grams.
APPEARS IN
संबंधित प्रश्न
What is the mass of 0.2 mole of oxygen atoms?
What name is given to the amount of substance containing this number of atoms ?
What weight of each element is present in 1.5 moles of sodium sulphite, Na2SO3 ?
(Atomic masses : Na = 23 u ; S = 32 u ; O = 16 u)
Calculate the number of molecules in 12.8g of sulphur dioxide gas. Take Avogadro's number as 6 x 1023.
[S = 32, 0 = 16 ]
A student puts his signature with graphite pencil. If the mass of carbon in the signature is 10-12 g. Calculate the number of carbon atoms in the signature.
Explain the term:
Molar volume
Calculate the number of molecules in one Kg of calcium chloride.
Calculate the number of gram atoms in 4.6 gram of sodium.
Solid ammonium dichromate decomposes as:
\[\ce{(NH4)2Cr2O7 -> N2 + Cr2O3 + 4H2O}\]
If 63 g of ammonium dichromate decomposes. Calculate the quantity in moles of nitrogen formed.
How many grams are there in the following?
4 moles of the phosphorous molecule, P4
