The following quantum numbers are possible for how many orbital(s)
The following quantum numbers are possible for how many orbital(s) n= 3, l = 2, m = +2 ?
Options
(a) 1 (b) 3 (c) 2 (d) 4
Correct Answer:
1
Explanation:
No […]
Chemistry
One litre hard water contains 12 mg Mg²⁺. Milli equivalents of washing soda
One litre hard water contains 12 mg Mg²⁺. Milli equivalents of washing soda required to remove its hardness is
Options
(a) 1 (b) 12.16 (c) 1 x 10⁻³ (d) 12.16 x 10⁻³
Correct Answer: […]
The percentage weight of Zn in white vitriol [ZnSO₄ 7H₂O] is approximately equal
The percentage weight of Zn in white vitriol [ZnSO₄ 7H₂O] is approximately equal to Zn=65, S=32, O=16 and H=1)
Options
(a) 33.65% (b) 32.56% (c) 23.65% (d) 22.65%
Correct Answer:
22.65%
Explanation:
Mol. […]
How many moles of lead (II) chloride will be formed from a reaction between
How many moles of lead (II) chloride will be formed from a reaction between 6.5 g of PbO and 3.2 g of HCl?
Options
(a) 0.044 (b) 0.333 (c) 0.011 (d) 0.029
Correct […]
Avogadro’s Law
The Avogadro’s law states that equal volume of all gases contains an equal number of molecules under similar conditions of temperature and pressure.
Law of Combining Volumes by Gay Lussac
The law of combining volumes given by the Gay Lussac States that When gases react together, they bear a simple whole number ratio to one another and to the volume of products under same conditions of […]
Law of Reciprocal Proportions
This law of reciprocal proportions states that When two elements combine with fixed mass of the third element, the ratio will either be same or simple multiple ratios of weights of two elements.
[…]
Law of Multiple Proportions
The law of multiple proportions states that when two elements combine to form two or more than two compounds, the mass of one of the elements which combine with fixed mass of other bears […]
Law of Definite Proportions
The law of definite proportion states that a compound always contains same elements in fixed ratio by mass.
Law of Conservation of Mass
Definition of Conservation of Mass:
The mass of the products in a chemical reaction must equal the mass of the reactants.
Explanation:
Consider the reaction where hydrogen and oxygen react to give one water molecule.
The […]