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प्रश्न
Calculate the molecular mass of C2H4.
उत्तर
Molecular mass of C2H4 = 2 × Atomic mass of C + 4 × Atomic mass of H
= (2 × 12 + 4 × 1) u
= (24 + 4) u
= 28 u
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संबंधित प्रश्न
Calculate the formula unit mass of Na2O given the atomic mass of
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Calculate the formula masses of the following compounds :
Sodium oxide, Na2O
Calculate the formula masses of the following compounds :
- Calcium chloride
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(Given : Atomic masses : Ca = 40 u ; Cl = 35.5 u ; Na = 23 u ; C = 12 u; O = 16 u)
Calculate the molecular mass of the following:
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The volume of 4g of H2 at 4 atmosphere.
Calculate:
The mass of oxygen in 2.2 litres of CO2 at STP.
Calculate the weight/mass of the molecule of oxygen.
Answer the following question using the data given below:
- Assertion: The Relative Molecular Mass of Chlorine is 35.5 a.m.u.
- Reason: The natural abundance of Chlorine isotopes are not equal.
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K2CO3
Calcium carbonate react with dilute hydrochloric acid as given below:
\[\ce{CaCO3 + 2HCl -> CaCl2 + H2O + CO2}\]
What is the volume of carbon dioxide liberated at S.T.P. at the same time?
