Stoichiometry The heat change for the reaction, C(s) + 2S(s) → CS₂(l), is 104.2 kJ. It represents the heat of Combustion Solution Fusion Formation Combustion Solution Fusion Formation ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Which of the following expressions defines the Baume gravity scale for liquids lighter than water? °Be = 200(G-1) °Be = 145 - (145/G) °Be = (140/G) - 130 °Be = (400/G) - 400 °Be = 200(G-1) °Be = 145 - (145/G) °Be = (140/G) - 130 °Be = (400/G) - 400 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Unrestrained expansion of an ideal gas does not result in its cooling due to the reason that the gas molecules Do work equal to loss in kinetic energy Are above the inversion temperature Do not lose energy on collision Do not exert attractive force on each other Do work equal to loss in kinetic energy Are above the inversion temperature Do not lose energy on collision Do not exert attractive force on each other ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Measurement of the amount of dry gas collected over water from volume of moist gas is based on the Avogadro's hypothesis Charle's law Boyle's law Dalton's law of partial pressures Avogadro's hypothesis Charle's law Boyle's law Dalton's law of partial pressures ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry In physical adsorption, as compared to chemisorption, the Heat of adsorption is very large Quantity adsorbed per unit mass is higher Activation energy is very high Rate of adsorption is controlled by the resistance to surface reaction Heat of adsorption is very large Quantity adsorbed per unit mass is higher Activation energy is very high Rate of adsorption is controlled by the resistance to surface reaction ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry In the reaction, Ca + 2H₂O = Ca(OH)₂ + H₂ ; what volume (c.c.) of hydrogen at STP would be liberated, when 8 gm of calcium reacts with excess water? (atomic weight of calcium = 40) 0.4 2240 1120 4480 0.4 2240 1120 4480 ANSWER DOWNLOAD EXAMIANS APP
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