mgl chapter 6

Factorise 64a 6 - 343. 64a 6 - 343 = (4a 2 ) 3 - (7) 3 = (4a 2 - 7) (16a 4 + 28a 2 + ..

Balance other atoms except H and O a..

Question: Solve the following equation: Answer: 42y-42 = 35y-21 42y-91y = -21+42 -49y = 21 ..

We know that two events are independent if the occurrence of one does not effect the occurrence of other. If A and B are independent events P (A/B) = P (A) and P (B/A) = P (B) \ The multiplication rule for the independent events A and B is given b..

Carbon dioxide is readily absorbed by alkalis such as sodium hydroxide and potassium hydroxide, to form their respective carbonates. The above reaction of carbon dioxide with potassium hydroxide is used to purify air. When air is passed through a solution of potassium hydroxide, it absorbs ..

Soda glass, also called window glass, is got by fusing sodium carbonate (Na 2 CO 3 ), calcium carbonate (CaCO 3 ) and sand or quartz (SiO 2 ) in proper proportions. Small amount of scrap glass (pieces and bits of waste glass from previous process runs) is added as a flux. The mixture is then fused ..

A triple covalent bonds consists of three pairs of shared electrons. It is formed by the sharing of three pairs of electrons between two atoms. In all there are six electrons shared between two atoms. It is a combination of three single bonds. It is represented by (short lines..

Tetravalency of Carbon Carbon has in all, six electrons, which are distributed in first two shells, i.e., K-shell has two and L-shell accommodates four electrons viz., ..

Formation of oxygen (O 2 )Molecule - Each oxygen atom has six electrons in its valence shell. Thus, it requires 2 more electrons to achieve the nearest noble gas configuration. This is achieved by sharing two pairs of electrons by the two oxygen atoms as shown belo..