Advertisements
Advertisements
प्रश्न
Write the name of the following compound and deduce its molecular mass.
MgCl2
Advertisements
उत्तर
MgCl2 - Magnesium chloride
| Molecule | Constituent elements | Atomic mass u | Number of atoms in the molecule | Atomic mass × number of atoms | Mass of the Constituents u |
| MgCl2 | Mg | 24 | 1 | 24 × 1 | 24 |
| Cl | 35.5 | 2 | 35.5 × 2 | 71 |
The Molecular mass of MgCl2 = Sum of Constituent atomic masses
(Molecular mass of MgCl2) = (Atomic mass of Mg) × 1 + (Atomic mass of Cl) × 2
= (24 × 1) + (35.5 × 2)
= 24 + 71
= 95 u
APPEARS IN
संबंधित प्रश्न
Calculate the molecular mass of Cl2.
Calculate the molecular mass of CO2.
Calculate the molecular mass of NH3.
Calculate the formula unit mass of ZnO given the atomic mass of:
- Zn = 65 u
- Na = 23 u
- K = 39 u
- C = 12 u
- O = 16 u
Calculate the formula unit mass of K2CO3 given the atomic mass of
- Zn = 65 u
- Na = 23 u
- K = 39 u
- C = 12 u
- O = 16 u
Calculate the molecular masses of the following :
- Hydrogen, H2
(Atomic masses : H = 1 u ; O = 16 u ; Cl = 35.5 u ; N = 14 u ; C = 12 u)
Calculate the molecular mass of ethanoic acid, CH3COOH.
(Atomic masses : C = 12 u ; H = 1 u ; O = 16 u)
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)
Calculate the molecular masses of the following compounds :
Ethanol, C2H5OH
Calculate the molecular mass of the following:
CuSO4·5H2O
Given atomic mass of Cu = 63·5, H = 1, O = 16, C=12, N = 14, Mg = 24, S = 32
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
Calculate:
The mass of oxygen in 2.2 litres of CO2 at STP.
Calculate the weight/mass of an atom of oxygen.
Urea [CO(NH2)2] is an important nitrogenous fertilizer. Urea is sold in 50 kg sacks. What mass of nitrogen is in one sack of urea?
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.
The mass of one steel screw is 4.11g. Find the mass of one mole of these steel screws. Compare this value with the mass of the Earth (5.98 × 1024kg). Which one of the two is heavier and by how many times?
Write the name of the following compound and deduce its molecular mass.
NaHCO3
