Some Basic Concepts of Chemistry
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Dissolving 120 g of a compound of mol. wt. 60 in 1000 g of water gave a solution of densit...
By Deepak Rock, 4 years ago
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0
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383
A sample of AlF3 contains 3.0 × 10^24 F^– ions. The number of formula unit of this sample ...
By Deepak Rock, 4 years ago
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0
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422
Silver oxide (Ag2O) decomposes at temperature 300°C yielding metallic silver and oxygen ga...
By Deepak Rock, 4 years ago
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0
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381
1.44 g of titanium (At. mass = 48) reacted with excess of O2 and produce x g of non-stoich...
By Deepak Rock, 4 years ago
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0
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278
The number of water molecules present in a drop of water (volume 0.0018 mL) density = 18 m...
By Deepak Rock, 4 years ago
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398
Assuming fully decomposed, the volume of CO2 released at STP on heating 9.85 g of BaCO3 (A...
By Deepak Rock, 4 years ago
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208
The amount of zinc required to produce 224 mL of H2 at STP on treatment with dil. H2SO4 wi...
By Deepak Rock, 4 years ago
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0
1
168
The percentage of Se in peroxidase anhydrous enzyme is 0.5% by weight (atomic weight = 78....
By Deepak Rock, 4 years ago
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150
Irrespective of the source, pure sample, of water always yields 88.89% mass of oxygen and ...
By Deepak Rock, 4 years ago
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178
If the true value for an experimental result is 6.23 and the results reported by three stu...
By Deepak Rock, 4 years ago
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