Advertisements
Advertisements
प्रश्न
Calculate the molecular masses of the following compounds :
Ethyne, C2H2
(Atomic masses : C = 12 u ; H = 1 u)
Advertisements
उत्तर
Given:
Atomic mass of C = 12 u
Atomic mass of H = 1 u
Therefore, molecular mass of C2H2 (acetylene) can be calculated as follows:
(2 × 12) + (2 × 1) = 26
Hence, molecular mass of acetylene is 26 u.
APPEARS IN
संबंधित प्रश्न
Calculate the molecular masses of the following compounds :
Methanol, CH3OH
Calculate the molecular masses of the following compounds :
Hydrogen sulphide, H2S
Calculate the molecular masses of the following compounds :
Carbon disulphide, CS2
(Atomic masses : H = 1 u ; S = 32 u ; C = 12 u)
Calculate the weight/mass of: `10^22` atoms of carbon
The gram molecular mass of oxygen molecule is ______.
Molar mass of CO2 is 42g.
Calcium carbonate is decomposed on heating in the following reaction
CaCO3 → CaO + CO2
Calculate the gram molecular mass of calcium carbonate involved in this reaction.
The formula unit mass of Ca3 (PO4)2 is ————.
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?
A gas occupied 360 cm3 at 87°C and 380 mm Hg pressure. If the mass of gas is 0.546 g, find its relative molecular mass.
