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n-propyl acetate (bp 102 C) evaporates rapidly when exposed to air, but water(bp 100C)does not. Explain why
Q. Uses of Aluminium? Aluminium exhibits useful properties of low density, high thermal and electrical conductivity, and good corrosion resistance with non-toxic nature of the
The electronic configuration of a dipositive metal M 2+ is 2, 8, 14 and its atomic weight is 56 a.m.u. The number of neutrons in its nuclei would be: (1) 30 (2)32
0.47 moles of Sodium were reacted with 26g of Copper(II) Nitrate? If the actual yield of copper metal was 1.43g, what is the percentage yield of this reaction? 2. What is the equiv
explain why carbon tetra-chloride does not dissolve in water?
conclusion for the project
How many unpaired electrons are present in Ni 2+ cation (atomic number = 28): (1) 0 (2) 2 (3) 4 (4) 6 Ans: 2
write about deutorium
Q. How can we obtain Boron? Boron is- obtained by the red-action of B 2 O 3 with magnesium or sodium B 2 0 3 is first prepared by strongly katingH 3 B0 3 which is obtained b
A electrovalent compound is made up of: (1) Electrically charged molecules (2) Neutral molecules (3) Neutral atoms (4) Electrically charged atoms or group of atoms
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