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0
votes
33
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What is the standard enthalpy change for the fusion reaction of 2.5 grams of ice at 0 degrees Celsius?
answered
Mar 1
in
Chemical thermodynamics
0
votes
27
views
What is the standard enthalpy change for the fusion reaction between aluminum and oxygen to form aluminum oxide if 10 grams of aluminum reacts completely with excess oxygen under standard conditions?
answered
Mar 1
in
Chemical thermodynamics
0
votes
31
views
What is the standard enthalpy change for the fusion of solid sodium chloride at 25°C and 1 atm, given the following reaction: NaCl(s) → Na(l) + Cl2(g)?
answered
Mar 1
in
Chemical thermodynamics
0
votes
37
views
What is the standard enthalpy change for the fusion of 50 grams of ice at 0°C to liquid water at 25°C, assuming constant pressure and no heat loss to the surroundings?
answered
Mar 1
in
Chemical thermodynamics
0
votes
42
views
What is the standard enthalpy change for the fusion of 100 grams of ice at 0°C to liquid water at 0°C? Assume that the specific heat capacity of ice and water are 2.09 and 4.18 J/g·°C, respectively, and the enthalpy of fusion of ice is 6.01 kJ/mol.
answered
Mar 1
in
Chemical thermodynamics
0
votes
30
views
What is the standard enthalpy change for the fusion of 10 grams of solid sodium (Na) at its melting point, given that the molar heat of fusion of sodium is 2.60 kJ/mol?
answered
Mar 1
in
Chemical thermodynamics
0
votes
39
views
What is the standard enthalpy change for the fusion of 10 grams of ice at 0°C to liquid water at 25°C? Given the standard enthalpy of fusion for ice is 6.01 kJ/mol and the specific heat capacity of water is 4.18 J/g°C.
answered
Mar 1
in
Chemical thermodynamics
0
votes
36
views
What is the standard enthalpy change for the dissolution of 5.00g of sodium chloride (NaCl) in 100mL of water (H2O) at 25°C? The molar mass of NaCl is 58.44 g/mol and the density of water at this temperature is 0.997 g/mL.
answered
Mar 1
in
Chemical thermodynamics
0
votes
42
views
The problem is:What is the standard enthalpy change for the dissolution of 5.00 grams of solid magnesium chloride (MgCl2) in 250.0 mL of water at 25 ℃? Given the molar enthalpy of hydration of MgCl2 is -641 kJ/mol.
answered
Mar 1
in
Chemical thermodynamics
0
votes
36
views
What is the standard enthalpy change for the dissolution of 5.00 g of potassium chloride (KCl) in water, given that the molar heat of solution for KCl is -17.95 kJ/mol?
answered
Mar 1
in
Chemical thermodynamics
0
votes
29
views
What is the standard enthalpy change for the dissolution of 2.5 moles of sodium chloride in water at 25°C, given that the standard enthalpy of formation of NaCl is -411.1 kJ/mol, and the molar heat capacity of the solution is 4.18 J/g K?
answered
Mar 1
in
Chemical thermodynamics
0
votes
29
views
What is the standard enthalpy change for the combustion of 3 moles of propane gas (C3H8) at standard conditions? Express your answer in kJ/mol of propane burned.
answered
Mar 1
in
Chemical thermodynamics
0
votes
29
views
What is the standard enthalpy change for the combustion of methane (CH4) to produce carbon dioxide (CO2) and water (H2O) if the reactants and products are at standard conditions (298 K and 1 atm)?
answered
Mar 1
in
Chemical thermodynamics
0
votes
43
views
Sure, here's a problem:Calculate the standard enthalpy change for the combustion of methane gas (CH4) using the following information:Formation of CO2: -393.5 kJ/molFormation of H2O: -285.8 kJ/molFormation of CH4: -74.8 kJ/mol
answered
Mar 1
in
Chemical thermodynamics
0
votes
45
views
What is the standard enthalpy change (ΔH°) for the reaction of 1 mole of liquid ethanol (C2H5OH) and 1 mole of liquid oxygen (O2) to produce 2 moles of gaseous carbon dioxide (CO2) and 3 moles of liquid water (H2O)?
answered
Mar 1
in
Chemical thermodynamics
0
votes
37
views
What is the standard enthalpy change for the reaction of methane gas and oxygen gas to form carbon dioxide gas and water vapor, given that all gases are at standard temperature and pressure conditions?
answered
Mar 1
in
Chemical thermodynamics
0
votes
36
views
What is the standard electrode potential for the reduction of Cu2+ to Cu at a temperature of 25°C? Use the half-reaction equation and the Nernst equation to calculate the potential.
answered
Mar 1
in
Physical Chemistry
0
votes
42
views
What is the standard cell potential for a galvanic cell made up of a silver electrode and a zinc electrode, where the concentration of silver ions is 0.01 M and the concentration of zinc ions is 1.0 M?
answered
Mar 1
in
Physical Chemistry
0
votes
36
views
What is the specific surface area of a porous material if 10 mL of nitrogen gas is adsorbed at 77 K and 1 atm and the resulting monolayer thickness is 2.5 nm? The cross-sectional area of a nitrogen molecule is 0.16 nm^2.
answered
Mar 1
in
Surface Chemistry
0
votes
38
views
What is the specific surface area (in m²/g) of a sample of activated carbon that adsorbs 20 ml of nitrogen gas at STP, assuming monolayer formation and a nitrogen cross-sectional area of 0.162 nm²? The mass of the activated carbon sample is 0.5 g.
answered
Mar 1
in
Surface Chemistry
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