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0.700 moles of an unknown solid is placed into water to make 150.0 mL of solution....
Question 44 of 50 Submit 3.15 mol of an unknown solid is placed into enough water...
Question 44 of 50 Submit 3.15 mol of an unknown solid is placed into enough water to make 150.0 mL of solution. The solution's temperature increases by 19.21°C. Calculate AH for the dissolution of the unknown solid. (The specific heat of the solution is 4.18 J/g.°C and the density of the solution is 1.20 g/mL). kJ/mol 1 2 3 C +/- : 0 x 100
Question 29 of 50 Submit 5.21 g of MgSO4 is placed into 100.0 mL of water....
Question 29 of 50 Submit 5.21 g of MgSO4 is placed into 100.0 mL of water. The water's temperature increases by 6.70°C. Calculate AH, in kJ/mol, for the dissolution of MgSO4 (The spe- cific heat of water is 4.18 J/g. *C and the density of the water is 1.00 g/mL). You can assume that the specific heat of the solution is the same as that of water. kJ/mol 1 2 3 C +/- : 0 x 100
16.41 g of MgSO₄ is placed into 100.0 mL of water. The water's temperature increases by...
16.41 g of MgSO₄ is placed into 100.0 mL of water. The water's temperature increases by 6.7°C. Calculate ∆H, in kJ/mol, for the dissolution of MgSO₄. (The specific heat of water is 4.18 J/g･°C and the density of the water is 1.00 g/mL). You can assume that the specific heat of the solution is the same as that of water.
An 8.000 gram sample of solid NH.NO, was mixed with a 200.00 mL sample of water...
An 8.000 gram sample of solid NH.NO, was mixed with a 200.00 mL sample of water in a coffee cup calorimeter. The water was initially at 20.0°C and the final temperature of the resulting solution was recorded as 17.1°C. Calculate the experimental AHcoln (in units of kJ/mol NH.NO:) for the dissolution of NH NO3 (molar mass = 80.04 g/mol). Assume that no heat is lost to the calorimeter or the surroundings. The density of water is 1.00 g/mL and the...
When 25.0 mL of 0.700 mol/L NaOH was mixed in a calorimeter with 25.0 mL of...
When 25.0 mL of 0.700 mol/L NaOH was mixed in a calorimeter with 25.0 mL of 0.700 mol/L HCl, both initially at 20.0 °C, the temperature increased to 22.1 °C. The heat capacity of the calorimeter is 279 J/°C. What is the enthalpy of neutralization in kJ/ mole of HCl? Since the solutions are mostly water, the solutions are assumed to have a density of 1.0 g/mL and a specific heat of 4.18 J/g°C. Select one: a. −1020 b. -58.6 c. −5856 d. 58.6
When 25.0 mL of 0.700 mol/L NaOH was mixed in a calorimeter with 25.0 mL of...
When 25.0 mL of 0.700 mol/L NaOH was mixed in a calorimeter with 25.0 mL of 0.700 mol/L HCl, both initially at 20.0 °C, the temperature increased to 22.1 °C. The heat capacity of the calorimeter is 279 J/°C. Since the solutions are mostly water, the solutions are assumed to have a density of 1.0 g/mL and a specific heat of 4.18 J/g°C. What is the mass of the solution? Select one: a. No enough information b. 50.0 g c. 50.0 kg d. 25.0...
Mass of beaker plus solid Mass of water,mno 1.229 4,298-g 41-949 Mass of solid, m Initial...
Mass of beaker plus solid Mass of water,mno 1.229 4,298-g 41-949 Mass of solid, m Initial temperature Final temperature a1,0 for the reaction (Eq. 1 ) (SH. = 4.18 J/g°C) ΔH for the reaction (Eq.5) The quantity you have just calculated is approximately" equal to the heat of solution of your sample. Calculate OC - joules joules the heat of solution per gram of solid sample. The solution reaction is endothermic exothermic. (Underline the correct answer.) Give your reasoning. Solid...
When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution...
When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution (dissolving) can be determined using a coffee cup calorimeter. Thermometer In the laboratory a general chemistry student finds that when 9.66 g of CSCI(S) are dissolved in 106.80 g of water, the temperature of the solution drops from 22.55 to 19.99 °C. Cardboard or Styrofoam lid The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate...
When 0.0700 mol of a substance is added to 150.0 grams of an aqueous solution in...
When 0.0700 mol of a substance is added to 150.0 grams of an aqueous solution in a Styrofoam cup calorimeter, a chemical reaction occurs that causes the temperature of the solution to increase from 25.3 to 38.3 °C. Assume that the specific heat of the solution is 4.18 J/(g°C) and that the heat capacity of the calorimeter is negligible. Use this data to calculate the enthalpy change (in kJ/mol substance) for the chemical reaction +116 kJ/mol +3.80 kJ/mol -571 kJ/mol...
Using the equations Ca (s)2 O (g) Сао (s) 2 H2 (g) Determine the enthalpy for...
Using the equations Ca (s)2 O (g) Сао (s) 2 H2 (g) Determine the enthalpy for the reaction Са (s) + 2 H0 () — Са(ОН)2 (s) + H2 (9). CaO (s) AH° = -635 kJ/mol -64 kJ/mol H2O ()Ca(OH)2 (s) AH O2 (g)2 H2O (I) AH° = -572 kJ/mol kJ/mol 1 2 3 4 6 C 5 7 8 9 +/- 0 x 100 LO 11.01 g of MgSO4 is placed into 100.0 mL of water. The water's temperature...
Question 44 of 50 Submit 3.15 mol of an unknown solid is placed into enough water to make 150.0 mL of solution. The solution's temperature increases by 19.21°C. Calculate AH for the dissolution of the unknown solid. (The specific heat of the solution is 4.18 J/g.°C and the density of the solution is 1.20 g/mL). kJ/mol 1 2 3 C +/- : 0 x 100
Question 29 of 50 Submit 5.21 g of MgSO4 is placed into 100.0 mL of water. The water's temperature increases by 6.70°C. Calculate AH, in kJ/mol, for the dissolution of MgSO4 (The spe- cific heat of water is 4.18 J/g. *C and the density of the water is 1.00 g/mL). You can assume that the specific heat of the solution is the same as that of water. kJ/mol 1 2 3 C +/- : 0 x 100
An 8.000 gram sample of solid NH.NO, was mixed with a 200.00 mL sample of water in a coffee cup calorimeter. The water was initially at 20.0°C and the final temperature of the resulting solution was recorded as 17.1°C. Calculate the experimental AHcoln (in units of kJ/mol NH.NO:) for the dissolution of NH NO3 (molar mass = 80.04 g/mol). Assume that no heat is lost to the calorimeter or the surroundings. The density of water is 1.00 g/mL and the...
Mass of beaker plus solid Mass of water,mno 1.229 4,298-g 41-949 Mass of solid, m Initial temperature Final temperature a1,0 for the reaction (Eq. 1 ) (SH. = 4.18 J/g°C) ΔH for the reaction (Eq.5) The quantity you have just calculated is approximately" equal to the heat of solution of your sample. Calculate OC - joules joules the heat of solution per gram of solid sample. The solution reaction is endothermic exothermic. (Underline the correct answer.) Give your reasoning. Solid...
When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution (dissolving) can be determined using a coffee cup calorimeter. Thermometer In the laboratory a general chemistry student finds that when 9.66 g of CSCI(S) are dissolved in 106.80 g of water, the temperature of the solution drops from 22.55 to 19.99 °C. Cardboard or Styrofoam lid The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate...
When 0.0700 mol of a substance is added to 150.0 grams of an aqueous solution in a Styrofoam cup calorimeter, a chemical reaction occurs that causes the temperature of the solution to increase from 25.3 to 38.3 °C. Assume that the specific heat of the solution is 4.18 J/(g°C) and that the heat capacity of the calorimeter is negligible. Use this data to calculate the enthalpy change (in kJ/mol substance) for the chemical reaction +116 kJ/mol +3.80 kJ/mol -571 kJ/mol...
Using the equations Ca (s)2 O (g) Сао (s) 2 H2 (g) Determine the enthalpy for the reaction Са (s) + 2 H0 () — Са(ОН)2 (s) + H2 (9). CaO (s) AH° = -635 kJ/mol -64 kJ/mol H2O ()Ca(OH)2 (s) AH O2 (g)2 H2O (I) AH° = -572 kJ/mol kJ/mol 1 2 3 4 6 C 5 7 8 9 +/- 0 x 100 LO 11.01 g of MgSO4 is placed into 100.0 mL of water. The water's temperature...
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