Advertisements
Advertisements
प्रश्न
Calculate the molecular masses of the following :
Chlorine, Cl2
(Atomic masses : H = 1 u ; O = 16 u ; Cl = 35.5 u ; N = 14 u ; C = 12 u)
Advertisements
उत्तर
Given:
Atomic mass of Cl = 35.5 u
Therefore, molecular mass of Cl2 can be calculated as follows:
35.5 × 2 = 71
Hence, molecular mass of Cl2 is 71 u.
APPEARS IN
संबंधित प्रश्न
What is meant by the ‘molar mass’ of a substance ? State the unit in which molar mass is usually expressed.
The mass of one molecule of a substance is 4.65 × 10–23 g. What is its molecular mass ? What could this substance be ?
Calculate the molecular mass of the following:
(NH4)2CO3
Given atomic mass of Cu = 63·5, H = 1, O= 16, C = 12, N = 14, Mg = 24, S = 32
Choose the correct answer from the options given below.
In water, the hydrogen-to-oxygen mass ratio is
Calculate the relative molecular masses of the following
(NH4)2 Cr2O7
[At mass : C = 12, H = 1, O = 16, Ci = 35.5, N = 14, Cu = 63.5, S = 32, K = 39, Pt = 195, Ca = 40, P = 31, Mg = 24]
Calculate the weight/mass of an atom of hydrogen.
Calculate the molecular mass of the following:
Na2SO4.10H2O
Given atomic masses of Na = 23, H = 1, O = 16, C = 12, N = 14, Mg = 24, S = 32
Write the name of the following compound and deduce its molecular mass.
K2CO3
Calcium carbonate react with dilute hydrochloric acid as given below:
\[\ce{CaCO3 + 2HCl -> CaCl2 + H2O + CO2}\]
How many moles of \[\ce{HCl}\] will react with 5 moles of calcium carbonate?
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.
