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Question:
(i) Differentiate between ionic, metallic, covalent and dipole-dipole bonds. Provide examples in each case.
(ii) With regard to electronic con?guration, what do all the elements in Group VII of the periodic table have in common?
(iii) Describe why hydrogen ?uoride (HF) has a higher boiling temperature than hydrogen chloride (HCl) (19.4ºC vs. - 85ºC), even though HF has a lower molecular weight.
(iv) On the basis of the hydrogen bond, explain the anomalous behaviour of water when it freezes. That is, why is there volume expansion upon solidi?cation?
(a) Copper has an atomic radius of 0.128 nm, a face-centered cubic crystal structure and an atomic weight of 63.5 g/mol. Compute
(i) the volume of a unit cell of copper
(ii) the atomic packing factor
(iii) the theoretical density of copper.
Q. Write an account of soda lime glass and safety glasses. Ans. Soda-Lime Glass or soft glass: It is the ordinary glass in which Na 2 O is added to the melt to oxide on hea
i want know about the whole concept of werner complex.how it is and why we should know..everything
Uses of Dihydric alcohols (a) Dihydric alcohols are used as antifreeze in car radiators. (b) Dihydric alcohols is used in the manufacture of dacron, dioxane etc. (c) Dihy
In lab, you're having fun along with buffers based onto a 0.1 M solution of sodium phosphate at pH7.0. Into this system, there are three of pK A s as: 12.7, 7.21 and 2.12.
Soya bean products Soya bean and its flours are used in the preparation of a variety of fermented and non-fermented products in Asian countries. However in India, food use of
What are enantiomers and diastereomers? Differentiate among chiral and achiral molecules. Give an state of Reimer-Tiemann reaction. How is Bakelite made and what is its majo
CH 3 COOH ( ethanoic acid) + NH 3 ------------ > CH 3 COONH 4 + (HEAT) ---------- > CH 3 CONH 2 (methyleamine) + H 2 O
What is meant by entropy driven reaction? How can a reaction with positive changes of enthalpy and entropy are made entropy driven
a. State two main differences among globular proteins and fibrous proteins. b. Based on their chemical composition, verify how are lipids classified? Give one example of each cl
Physical properties of nitroalkanes
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