1- How many grams of oxygen gas are needed to liberate 734 kJ of heat from the combustion of hydrogen gas H₂ ( 9 ) + 0₂ ( 9 ) → 2 H₂O ( g ) AH - 242 kJ2- A mercury " mirror " can form inside a test tube when mercury ( II ) oxide , HgO ( s ) , thermally decomposes as shown in the equation below . 2 HgO ( s ) 2 Hg ( 1 ) + O₂ ( g ) AH = 181.6 kJ How many joules of heat are needed to convert 0.860 moles of mercury ( II ) oxide to liquid mercury ?3- When barium hydroxide , Ba ( OH ) 2 , reacts with ammonium chloride , NH4Cl , a highly endothermic reaction takes place . Ba ( OH ) ₂ ( aq ) + NH4Cl ( s ) → BaCl , ( aq ) + 2H , O ( 1 ) + 2NH , ( g ) AH = 90.7 kJ How many moles of barium hydroxide , are needed to absorb 52.2 kJ of heat from the environment from the equation above ?4- The reactions of nitrogen oxides are important in the environment and in industrial processes . Calculate the heat transferred , in kJ , when 243 g of NO gas reacts with excess oxygen to form solid dinitrogen pentoxide . 4 NO ( g ) + O₂ ( g ) →→→ 2 N₂O5 ( s ) AH - 219 kJ5- How many kilojoules of heat would be required to fully melt a 0.834 m³ block of ice , provided that the density of ice is 917 kg / m³ ? H₂O ( s ) H₂O ( 1 ) AH = 6.01 kJ
- 1 How Many Grams Of Oxygen Gas Are Needed To Liberate 734 Kj Of Heat From The Combustion Of Hydrogen Gas H 9 0 1 (101.23 KiB) Viewed 51 times
- 1 How Many Grams Of Oxygen Gas Are Needed To Liberate 734 Kj Of Heat From The Combustion Of Hydrogen Gas H 9 0 2 (86.21 KiB) Viewed 51 times
- 1 How Many Grams Of Oxygen Gas Are Needed To Liberate 734 Kj Of Heat From The Combustion Of Hydrogen Gas H 9 0 3 (32.55 KiB) Viewed 51 times
How many grams of oxygen gas are needed to liberate 734 kJ of heat from the combustion of hydrogen gas? H₂ (g) + O₂(g) → 2 H₂O(g) AH = -242 kJ
Question 18 A mercury "mirror" can form inside a test tube when mercury(II) oxide, HgO(s), thermally decomposes as shown in the equation below. 2 HgO (s) 2 Hg (1) + O2 (g) AH = 181.6 kJ How many joules of heat are needed to convert 0.860 moles of mercury(II) oxide to liquid mercury? 1 pts 1 pts
When barium hydroxide, Ba(OH)2, reacts with ammonium chloride, NH4Cl, a highly endothermic reaction takes place. D Ba(OH)₂ (aq) + NH4Cl (s) → BaCl, (aq)+2H2O(l)+2NH3(g) AH =90.7 kJ How many moles of barium hydroxide, are needed to absorb 52.2 kJ of heat from the environment from the equation above?
Question 20 1 pts The reactions of nitrogen oxides are important in the environment and in industrial processes. Calculate the heat transferred, in kJ, when 243 g of NO gas reacts with excess oxygen to form solid dinitrogen pentoxide. 4 NO(g) + O₂ (g) →2 N₂O5 (s) AH = -219 kJ
How many kilojoules of heat would be required to fully melt a 0.834 m³ block of ice, provided that the density of ice is 917 kg/m³? H₂O (s)→ H₂O (1) AH = 6.01 kJ