Answers In the reaction: 2Hl(g) ↔ H2(g) + l2(g)’ ΔH = 10 kj; The concentration of… In the reaction: 2Hl(g) ↔ H2(g) + l2(g)’ ΔH = 10 kj; The concentration of iodine in the… Read More
Answers The brown fumes given off when trioxonitrate (V) acid is heated consist of ? The brown fumes given off when trioxonitrate (V) acid is heated consist of ? A. NO2 and O2… Read More
Answers Fe(_2)O(_{3(s)}) + 2Al(_{(s)}) → Al(_2)O(_3) + 2Fe(_{(s)}). If the heats of formation of Al(_2)O(_3) and… Fe(_2)O(_{3(s)}) + 2Al(_{(s)}) → Al(_2)O(_3) + 2Fe(_{(s)}). If the heats of formation of Al(_2)O(_3) and Fe(_2)O(_3) are –… Read More
Answers Iron galvanized with zinc is cathodically protected from corrosion. This is because? Iron galvanized with zinc is cathodically protected from corrosion. This is because? A. zinc has a more positive… Read More
Answers Cr2O7 + 6Fe2+ + 14H+ → 2Cr3+ +6Fe3+ + 7H2O. In the above , the… Cr2O7 + 6Fe2+ + 14H+ → 2Cr3+ +6Fe3+ + 7H2O. In the above , the oxidation number of… Read More
Answers In the reaction 1O-3 + 5l- + 6H+ → 312 + 3H2O, the oxidizing agent… In the reaction 1O–3 + 5l– + 6H+ → 312 + 3H2O, the oxidizing agent is? A. H+… Read More
Answers In a reaction: (SnO_{2} + 2C → Sn + 2CO) the mass of coke containing… In a reaction: (SnO_{2} + 2C → Sn + 2CO) the mass of coke containing 80% carbon required… Read More
Answers Which of the following statements is true? Which of the following statements is true? A. Metals conduct electricity while non-metals do not B. Metals have… Read More
Answers Under high pressure, real gases do not obey gas laws because their molecules? Under high pressure, real gases do not obey gas laws because their molecules? A. have become more energetic… Read More
Answers How many grams of hydrogen gas will be liberated when 6g of magnesium ribbon dissolves… How many grams of hydrogen gas will be liberated when 6g of magnesium ribbon dissolves in 500cm3 of… Read More