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If 20% by weight of nitrogen is present in a compound, the molecular weight of the compound may be (a) 144 (c) 100 (b) 28 (d140

If 20% by weight of nitrogen is present in a compound, the molecular weight of the compound may be (a) 144 (c) 100 (b) 28 (d140

Chemistry by OpenStax (2015-05-04)
Chemistry by OpenStax (2015-05-04)
1st Edition
ISBN:9781938168390
Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Chapter18: Representative Metals, Metalloids, And Nonmetals
Section: Chapter Questions
Problem 116E: Basic solutions of Na4XeO6, are powerful oxidants. What mass of Mn(NO3)26H2O reacts with 125.0 mL of...
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21 ETRY AND REDOX REACTIONS If 20% by weight of nitrogen is present in a compound, the molecular weight of the compound may be (a) 144 (c) 100 (b) 28 d) 140 The mineral haematite is Fe2O3. Haematite ore contains unwanted material called gangue in addition to Fe2O3. If 5.0 kg of ore contains 2.78 kg of Fe, What is percentage purity of Fe;O;? A polystyrene, having formula B33C6H2(C&H3)n was prepared by heating styrene with tribromobenzoyl peroxide in the absence of air. If it was found to contain 10.46% bromine by weight, find the value of n. Hexachlorophene, C13H6C16O2, is a germicide in soaps. Calculate weight percent of each element in compound. Determine the empirical formula of Kelvar, used in making bullet proof vests, if it contains 70.6% C, 4.2% H, 11.8% N and 13,4% O: (a) CHSNO2 (c) CH9NO (b) CHSN20 (d) CHSNO In an organic compound of molar mass 108 gm mol C, H and N atoms are present in 9: 1 :3.5 by weight. Molecular formula can be: CaH&N2 7c) CsH&N 8. (b) CHoN (d) CaHN A poisonous compound cadaverine has 58.77% C, 13.81% H, and 27.42% N. Its molar mass is 102 g/mol. Determine its molecular formula. The chloride of a metal contains 71% chlorine by weight and the vapour density of it is 50. The atomic weight of the metal will be 10.
Transcribed Image Text:21 ETRY AND REDOX REACTIONS If 20% by weight of nitrogen is present in a compound, the molecular weight of the compound may be (a) 144 (c) 100 (b) 28 d) 140 The mineral haematite is Fe2O3. Haematite ore contains unwanted material called gangue in addition to Fe2O3. If 5.0 kg of ore contains 2.78 kg of Fe, What is percentage purity of Fe;O;? A polystyrene, having formula B33C6H2(C&H3)n was prepared by heating styrene with tribromobenzoyl peroxide in the absence of air. If it was found to contain 10.46% bromine by weight, find the value of n. Hexachlorophene, C13H6C16O2, is a germicide in soaps. Calculate weight percent of each element in compound. Determine the empirical formula of Kelvar, used in making bullet proof vests, if it contains 70.6% C, 4.2% H, 11.8% N and 13,4% O: (a) CHSNO2 (c) CH9NO (b) CHSN20 (d) CHSNO In an organic compound of molar mass 108 gm mol C, H and N atoms are present in 9: 1 :3.5 by weight. Molecular formula can be: CaH&N2 7c) CsH&N 8. (b) CHoN (d) CaHN A poisonous compound cadaverine has 58.77% C, 13.81% H, and 27.42% N. Its molar mass is 102 g/mol. Determine its molecular formula. The chloride of a metal contains 71% chlorine by weight and the vapour density of it is 50. The atomic weight of the metal will be 10.
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