Vapour Density
Vapour density is the ratio of the mass of a volume of a gas, to the mass of an equal volume of hydrogen, measured under the same conditions of temperature and pressure. According to Avogadro's law, equal volumes of all gases contain equal number of molecules. Thus, let the number of molecules i..
Vapour density is the ratio of the mass of a volume of a gas, to the mass of an equal volume of hydrogen, measured under the same conditions of temperature and pressure. According to Avogadro's law, equal volumes of all gases contain equal number of molecules. Thus, let the number of molecules i..b) Exchange energy
In an atom, the electrons present in various orbitals of the same subshell tend to exchange their positions which is associated with very small amount of energy. Half-filled and completely filled subshell configurations allow maximum exchange of electrons to take place. Therefore, such configurati..
Solution:
2 vol. : 1vol : 2 vol. 30 litres: x litres : y litres CO : O 2 CO : CO 2 2 : 1 2 : 2 30 : x 30 : y 2x = 30 x 1 2y = 30 x 2 x = 15 y= 30 Volume of oxygen = 15 litres Volume of carbon dioxide = 30 litre..
2 vol. : 1vol : 2 vol. 30 litres: x litres : y litres CO : O 2 CO : CO 2 2 : 1 2 : 2 30 : x 30 : y 2x = 30 x 1 2y = 30 x 2 x = 15 y= 30 Volume of oxygen = 15 litres Volume of carbon dioxide = 30 litre..Reactants
Pure dry ammonia (1 volume) and air (10 volume..
Problem
10. Is India well placed in basic ores to help its industrialization? In which states are these ores most prevalen..
B-DNA
This is nothing but the double helical structure described by Watson and Crick. It has 10 base pairs in each tur..
Reduction reactions
(i) A chlorine atom will gain an electron to become a chloride ion. (ii) Similarly, atoms of oxygen, nitrogen, sulphur, bromine, iodine, etc. can accept electrons and get converted to their respective ions. (iii) In some cases, cations of higher valency may accept electrons and get con..
(i) A chlorine atom will gain an electron to become a chloride ion. (ii) Similarly, atoms of oxygen, nitrogen, sulphur, bromine, iodine, etc. can accept electrons and get converted to their respective ions. (iii) In some cases, cations of higher valency may accept electrons and get con..Action of Alkalis on Solution of Salts
Alkalis react with aqueous solutions of salts producing the precipitates of the respective metals as hydroxides. These precipitates are usually colored. From the color and texture of the precipitate, it is possible to identify the metal ions present in the solution. In some cases, the precipitate f..
Alkalis react with aqueous solutions of salts producing the precipitates of the respective metals as hydroxides. These precipitates are usually colored. From the color and texture of the precipitate, it is possible to identify the metal ions present in the solution. In some cases, the precipitate f..General Methods of Preparation of Hydrogen
When metals like sodium, potassium and calcium are treated with cold water, they react violently with the formation of hydroxides and hydrogen gas. When metals like Mg, Al, Zn and Fe are heated to dull red heat and steam is passed over them , they form their oxides and hydrogen ..
When metals like sodium, potassium and calcium are treated with cold water, they react violently with the formation of hydroxides and hydrogen gas. When metals like Mg, Al, Zn and Fe are heated to dull red heat and steam is passed over them , they form their oxides and hydrogen ..Solution:
Mass of one mole of pure calcium carbonate (CaCO 3 ) = Mass of calcium + Mass of carbon + Mass of oxygen = (40 x 1) + (12 x 1) + (16 x 3) = 40 + 12 + 48 = 100 g ..
Mass of one mole of pure calcium carbonate (CaCO 3 ) = Mass of calcium + Mass of carbon + Mass of oxygen = (40 x 1) + (12 x 1) + (16 x 3) = 40 + 12 + 48 = 100 g ..See what our Users say :
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