Stoichiometry Which of the following expressions defines the Baume gravity scale for liquids lighter than water? °Be = (140/G) - 130 °Be = 145 - (145/G) °Be = 200(G-1) °Be = (400/G) - 400 °Be = (140/G) - 130 °Be = 145 - (145/G) °Be = 200(G-1) °Be = (400/G) - 400 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) 350 485 140 345 350 485 140 345 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry 40 gms each of the methane and oxygen are mixed in an empty container maintained at 40°C. The fraction of the total pressure exerted by oxygen is 1/4 2/3 1/3 1/2 1/4 2/3 1/3 1/2 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The value of gas constant 'R' is __________ kcal/kg.mole.°C. 2.79 3.99 None of these 1.987 2.79 3.99 None of these 1.987 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The heat of vaporisation __________ with increase in pressure. Increases Decreases Becomes zero at critical pressure Both B and C Increases Decreases Becomes zero at critical pressure Both B and C ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry A car tyre of volume 0.057 m³ is inflated to 300 kPa at 300 K. After the car is driven for 10 hours, the pressure in the tyre increases to 330 kPa. Assume air is an ideal gas and Cv for air is 21 J/mole.K. The change in the internal energy of air in the tyre in J/mole is 380 880 760 630 380 880 760 630 ANSWER DOWNLOAD EXAMIANS APP
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