Difference in Mendeleevs table and modern periodic table
Briefly describe the difference in the Mendeleev’s table and modern periodic table?
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Periodic table is now arranged in the order of raising atomic numbers. Furthermore, it is stated that the modern table makes it simpler to read and learn. The manner that it is set up now permits scientists to make modifications whenever essential.
Provide solution of this question. Molarity of a solution prepared by dissolving 75.5 g of pure KOH in 540 ml solution is: (a) 3.05 M (b) 1.35 M (c) 2.50 M (d) 4.50 M
Why oxidising character of oxoacids of halogens decreases as oxidation number increases?
It may be prepared by the action of phosphorus on thionyl chloride.P4 + 8SOCl2 4
Explain the reason behind that the chemists have not created a periodic table of compounds?
Help me to go through this problem. Lowering of vapour pressure is highest for: (a) urea (b) 0.1 M glucose (c) 0.1M MgSo4 (d) 0.1M BaCl2
Select the right answer of the question. If 18 gm of glucose (C6H12O6) is present in 1000 gm of an aqueous solution of glucose, it is said to be: (a)1 molal (b)1.1 molal (c)0.5 molal (d)0.1 molal
Illustrate alum?
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Explain how dissolving the Group IV carbonate precipitate with 6M CH3COOH, followed by the addition of extra acetic acid, establishes a buffer with a pH of approximately 5.
comparison of biodegradable and non-biodegradable polymers
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