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) 345 140 485 350 345 140 485 350 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The crystallisation of a solute from a solution may be done by Changing the nature of the system by the addition of a more soluble material Change of temperature thereby causing supersaturation All of these Removal of pure solvent by evaporation Changing the nature of the system by the addition of a more soluble material Change of temperature thereby causing supersaturation All of these Removal of pure solvent by evaporation ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry On mixing 56 gm of CaO with 63 gm of HNO₃, the amount of Ca(NO₃)₂ formed is __________ gm. 8.2 82 41 164 8.2 82 41 164 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry A vapor whose partial pressure is less than its equilibrium vapor pressure is called a __________ vapor. None of these Supersaturated Saturated Superheated None of these Supersaturated Saturated Superheated ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Isotopes are atoms having the same None of these Atomic mass Mass number Number of neutrons None of these Atomic mass Mass number Number of neutrons ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The equilibrium value of the mole fraction of the gas dissolved in a liquid is directly proportional to the partial pressure of that gas above the liquid surface. This statement pertaining to the solubility of gases in liquid is the __________ law. None of these Raoult's Henry's Amgat's None of these Raoult's Henry's Amgat's ANSWER DOWNLOAD EXAMIANS APP
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