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If the water molecules in 1g of water were uniformly distributed on earth surface , how many such water molecules would there be in 1 cm^2 of earth? Solution) No. of molecules in
Q. What is Alloys? Metals have a property of combining with other metals to form alloys. An alloy may be defined as a solid which is formed by a combination of two or more met
He- is p block element
a. How does vulcanization change the character of natural rubber? b. Why are the numbers 66 and 6 put in the names of nylon-66 and nylon-6?
Question: (a) Explain why metals are mostly ductile and ceramics brittle at room temperature. (b) Describe what you understand by the following terms. Use appropriate il
what is indicators
Ethyl bromide can be converted into ethyl alcohol using- Moist silver oxide or dry silver oxide?
Prove that the number of orbitals in a principal quantum level is n^2 using the fact that the number of orbitals in a subshell is (2L-1) where L is the azimuthal quantum number.
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Explain the following observations: (i) Generally there is an increase in density of elements from titanium (Z = 22) to copper (z =29) in the first series of transition element
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