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प्रश्न
Calculate the molecular mass of CH3OH.
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उत्तर
Molecular mass of CH3OH = Atomic mass of C + 3 × Atomic mass of H + Atomic mass of O
= (12 + 3 × 1 + 16 + 1) u
= (12 + 3 + 17) u
= 32 u
संबंधित प्रश्न
Calculate the molecular mass of H2.
Calculate the molecular mass of CH4.
Calculate the molecular masses of the following compounds :
Methanol, CH3OH
Calculate the molecular masses of the following :
Oxygen, O2
(Atomic masses : H = 1 u ; O = 16 u ; Cl = 35.5 u ; N = 14 u ; C = 12 u)
Calculate the molecular masses of the following compounds :
Ethene, C2H4
(Atomic masses : C = 12 u ; H = 1 u)
Calculate the molecular mass of the following:
Ammonium chloroplatinate (NH4)2 PtCl6
[At mass: C = 12, H = 1, O = 16, Cl = 35.5, N = 14, Cu = 63.5, S = 32, K = 39, Pt = 195, Ca = 40, P = 31, Mg = 24]
Calculate the weight/mass of a molecule of NH3.
Write the name of the following compound and deduce its molecular mass.
K2CO3
Calcium carbonate reacts with dilute hydrochloric acid as given below:
\[\ce{CaCO3 + 2HCl -> CaCl2 + H2O + CO2}\]
- What is the mass of 5 moles of calcium carbonate? (Relative molecular mass of calcium carbonate is 100)
- How many moles of HCl will react with 5 moles of calcium carbonate?
- What is the volume of carbon dioxide liberated at S.T.P. at the same time?
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?
