Stoichiometry What is the simplest formula of a compound containing 50% of element A (atomic weight = 10) and 50% of element B (atomic weight = 20)? A₂B AB₃ A₂B₃ AB₂ A₂B AB₃ A₂B₃ AB₂ ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry A sample of well water contains 140 gm/m³ Ca²⁺ ions and 345 gm/m³ Na⁺ ions. The hardness of the sample of water, expressed in terms of equivalent CaCO₃ in gm/m³ is (assuming atomic masses of Ca :40, Na : 23, C : 12, O : 16) 485 345 350 140 485 345 350 140 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry A butane isomerisation process produces 70 kmole/hr of pure isobutane. A purge stream removed continuously, contains 85% n-butane and 15% impurity (mole%). The feed stream is n-butane containing 1% impurity (mole%). The flow rate of the purge stream will be 4 kmole/hr 6 kmole/hr 5 kmole/hr 3 kmole/hr 4 kmole/hr 6 kmole/hr 5 kmole/hr 3 kmole/hr ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry 1 gm mole of an alcohol whose molecular weight is 74 contains 48 gms of carbon, 10 gms of hydrogen and 16 gms of oxygen. Its molecular formula is C₄H9OH C₃H21OH C2H33OH (C₂H₄)2H₂.OH C₄H9OH C₃H21OH C2H33OH (C₂H₄)2H₂.OH ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The value of Trouton's ratio (λb/Tb) for a number of substances is 21 (where, λb = molal that of vaporisation of a substance at its normal boiling point, KCal/kg. mole and Tb = normal boiling point, °K). The Kis-tyakowsky equation is used for calculation of Trouton's ratio of __________ liquids. Polar Non-polar Both A & B Neither A nor B Polar Non-polar Both A & B Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry In general, the specific heats of aqueous solutions __________ with increase in the concentration of the solute. Increase Remain unchanged Decrease None of these Increase Remain unchanged Decrease None of these ANSWER DOWNLOAD EXAMIANS APP
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