Stoichiometry The vapor pressure of a substance, at its melting point, is __________ in the solid state as compared to that in the liquid state. More Less Either A or B; depends on the nature of the substance Same More Less Either A or B; depends on the nature of the substance Same ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The weight fraction of methanol in an aqueous solution is 0.64. The mole fraction of methanol XM satisfies XM ≥ 0.64 XM = 0.5 XM < 0.5 0.5 < XM < 0.64 XM ≥ 0.64 XM = 0.5 XM < 0.5 0.5 < XM < 0.64 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 One kg of saturated steam at 100°C and 1.01325 bar is contained in a rigid walled vessel. It lias a volume of 1.673 m³. It cools to 98°C ; the saturation pressure is 0.943 bar ; one kg of water vapour under these conditions has a volume of 1.789 m³. The amount of water vapour condensed (in kg) is 0.065 0.1 1 0.065 0.1 1 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry According to Raoult's law, "The vapor pressure exerted by component in a solution is proportional to the mole fraction of that component." Raoult's law is not applicable under the following assumption/condition. In the formation of solution, chemical combination/molecular association between unlike molecules takes place The component molecules are non polar and are of almost equal size The attractive forces between like and unlike molecules are almost equal No component is concentrated at the surface of the solution In the formation of solution, chemical combination/molecular association between unlike molecules takes place The component molecules are non polar and are of almost equal size The attractive forces between like and unlike molecules are almost equal No component is concentrated at the surface of the solution ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Mass number of an atom is the sum of the numbers of Neutrons and protons Neutrons and electrons Protons and electrons Both A & B Neutrons and protons Neutrons and electrons Protons and electrons Both A & B ANSWER DOWNLOAD EXAMIANS APP
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