Recent questions

0 votes

1 answer 42 views

What mass of silver chloride (AgCl) can be produced from the reaction between 50 mL of 0.1 M silver nitrate (AgNO3) and 100 mL of 0.2 M hydrochloric acid (HCl)? Also, determine which reactant is in excess and by how much.

asked Feb 13 in Chemical reactions by StephanieLeF (2.9k points)

0 votes

1 answer 37 views

What is the total number of electrons transferred when a current of 2.0 A flows through a solution of CuSO4 for 15 minutes? Given that the molar mass of CuSO4 is 159.61 g/mol and the Faraday constant is 96,485 C/mol.

asked Feb 13 in ElectroChemistry by SterlingElki (3.1k points)

0 votes

1 answer 40 views

What is the amount of heat required to melt 10 g of ice at 0°C, given that the heat of fusion of water is 6.01 kJ/mol?

asked Feb 13 in ThermoChemistry by JacquelynDos (2.3k points)

0 votes

1 answer 34 views

What mass of sodium chloride (NaCl) would be produced from the reaction of 5.00 grams of sodium (Na) with an excess of chlorine (Cl2) gas, according to the following chemical equation: 2Na + Cl2 → 2NaCl

asked Feb 13 in Chemical reactions by Lettie458244 (2.6k points)

0 votes

1 answer 39 views

What is the percent ionization of a 0.1 M solution of acetic acid (pKa = 4.76) at 25°C, if its ionization constant (Ka) changes to 1.32 x 10^-5 when the temperature is raised to 50°C?

asked Feb 13 in Chemical equilibrium by AhmadEho9450 (2.2k points)

0 votes

1 answer 44 views

What is the heat released when 25 grams of sodium hydroxide (NaOH) crystallizes out of a solution at its freezing point, given the enthalpy of fusion of NaOH is -44.51 kJ/mol? (Molar mass of NaOH = 40.00 g/mol)

asked Feb 13 in ThermoChemistry by VetaPetterd1 (2.3k points)

0 votes

1 answer 33 views

What is the enthalpy change when 10.0 g of sodium hydroxide dissolves in 200 mL of water at 25°C? The molar enthalpy of dissolution of sodium hydroxide is -44.5 kJ/mol.

asked Feb 13 in ThermoChemistry by MarciaBrooke (2.6k points)

0 votes

1 answer 44 views

How many kJ of heat are released when 2.5 g of octane undergo complete combustion according to the reaction:$$C_8H_{18} + 12.5 O_2 \rightarrow 8 CO_2 + 9 H_2O$$Given: Enthalpy of combustion of octane = -5,470 kJ/mol.

asked Feb 13 in ThermoChemistry by SherrillDail (2.3k points)

0 votes

1 answer 32 views

What is the amount of heat released when 5 grams of NaCl is crystallized from its aqueous solution at 25°C, and the final temperature of the solution is -5°C? (Given: Heat of crystallization of NaCl = -3.92 kJ/mol)

asked Feb 13 in ThermoChemistry by TawannaPigot (2.3k points)

0 votes

1 answer 43 views

What is the heat of hydration of magnesium sulfate, MgSO4, when 45 grams of the anhydrous salt is dissolved in 250 mL of water? The molar heat of hydration of MgSO4 is -138.5 kJ/mol.

asked Feb 13 in ThermoChemistry by Latonya89F54 (2.3k points)

0 votes

1 answer 40 views

What mass of CO2 will be produced when 12.5 grams of methane (CH4) reacts with 50.0 grams of oxygen (O2) according to the following balanced equation:CH4 + 2O2 → CO2 + 2H2O Identify the limiting reactant and calculate the mass of CO2 produced.

asked Feb 13 in Chemical reactions by JaysonMcKenn (2.1k points)

0 votes

1 answer 41 views

How does the presence of fine particulate matter in the air contribute to the development of respiratory illnesses such as asthma and bronchitis in humans, and what chemical properties of these particles make them harmful to human health?

asked Feb 13 in Environmental Chemistry by JaredOliva6 (2.4k points)

0 votes

1 answer 50 views

What is the effect of fiber orientation on the mechanical properties of carbon fiber-reinforced polymer composites used in the aerospace industry?

asked Feb 13 in Polymer Chemistry by CecileODrisc (2.4k points)

0 votes

1 answer 51 views

What is the predicted reactivity of the transition metal compound Fe2O3, based on its electronic configuration?

asked Feb 13 in Inorganic Chemistry by TVMBeulah703 (2.7k points)

0 votes

1 answer 48 views

What is the magnetic moment of Fe(CO)₅ in the gas phase? Calculate the magnetic moment and identify its configuration.

asked Feb 13 in Inorganic Chemistry by ChristianeBo (2.1k points)

0 votes

1 answer 33 views

What is the electronic structure and bond order of the Fe(CO)5 molecule, and how does it relate to its observed vibrational modes and infrared spectrum?

asked Feb 13 in Computational Chemistry by OctavioCarva (2.3k points)

0 votes

1 answer 11 views

What is the process of fatty acid oxidation, and how is it relevant to lipid signaling and metabolism in human cells?

asked Feb 13 in BioChemistry by AlisiaBarwel (2.1k points)

0 votes

1 answer 35 views

How does the rate of fatty acid oxidation change in a cell when the concentration of coenzyme A decreases?

asked Feb 13 in BioChemistry by CasimiraMick (2.5k points)

0 votes

1 answer 37 views

What methods and equipment can be used for the extrusion of a specific polymer, and how can the extrusion conditions be optimized to achieve the desired properties of the final product?

asked Feb 13 in Polymer Chemistry by JereGerald1 (2.6k points)

0 votes

1 answer 7 views

How does the exposure to pesticide residues in fruits and vegetables affect the concentration of organophosphate metabolites in children's urine samples?

asked Feb 13 in Environmental Chemistry by Jeramy48117 (2.4k points)

Categories