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) 140 345 350 485 140 345 350 485 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry 80 kg of Na₂SO₄ (molecular weight = 142) is present in 330 kg of an aqueous solution. The solution is cooled such that. 80 kg of Na₂SO₄ .10H₂O crystals separate out. The weight fraction of Na₂SO₄ in the remaining solution is 0.18 0.24 1 0.18 0.24 1 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The hydroxyl ion (OH?) concentration in a solution having pH value 3 will be 10?? 10?? ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry 6 gms of magnesium (atomic weight = 24), reacts with excess of an acid, the amount of H₂ produced will be __________ gm. gm. 5 3 1 0.5 5 3 1 0.5 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Pick out the wrong unit conversion of heat transfer rate. 1 kcal/hr= 1.163 Watt 1 BTU/ft².hr = 2.712 kcal/m².hr 1 Watt = 1.163 kcal/hr 1 kcal/m².hr = 0.3687 BTU/ft².hr = 1.163 Watt/m² 1 kcal/hr= 1.163 Watt 1 BTU/ft².hr = 2.712 kcal/m².hr 1 Watt = 1.163 kcal/hr 1 kcal/m².hr = 0.3687 BTU/ft².hr = 1.163 Watt/m² ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Atoms of the same element, but of different masses are called Isotopes Isobars None of these Isotones Isotopes Isobars None of these Isotones ANSWER DOWNLOAD EXAMIANS APP
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