Advertisements
Advertisements
प्रश्न
Give the chemical formulae for the following compounds and compute the ratio by mass of the combining elements in each one of them. (You may use appendix-III).
- Ammonia
- Carbon monoxide
- (Hydrogen chloride
- Aluminium fluoride
- Magnesium sulphide
Advertisements
उत्तर
| Chemical formula | Ratio by mass | |
| (a) | Ammonia (NH3) | N(I) : H(3) 14 : 3 |
| (b) | Carbon monoxide (CO) | C(1) : O(1) 12 : 16 or 3 : 4 |
| (c) | Hydrogen chloride (HCl) | H(1) : Cl(I)1 : 23.5 or 2 : 71 |
| (d) | Aluminium fluoride (AlF3) | Al(1) : F(3) 27 : 19 × 3 or 9 : 19 |
| (e) | Magnesium sulphide (MgS) | Mg(1) : S(1) 24 : 32 or 3 : 4 |
APPEARS IN
संबंधित प्रश्न
An element Z has a valency of 3. What is the formula of oxide of Z ?
An element B shows valencies of 4 and 6. Write the formulae of its two oxides.
Give the formula and valency of:
chromate ………….…….. .
Identify the following substance:
Gas C that is colourless and can be used as a bleaching agent.
Write the formula of the following compound:
Sodium sulphite
Write the formula of the following compound:
Sodium aluminate
Write the formula of the following compound:
Aluminium chloride
Define the term Relative atomic mass. State why indirect methods are utilised to determine the absolute mass of an atom. Explain in brief the indirect method used.
Derive the chemical formula for calcium chloride.
