Recent activity by GarlandSouku

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Calculate the standard enthalpy change for the dissolution of 5.00 g of solid sodium hydroxide (NaOH) in water, given that the molar enthalpy of dissolution of NaOH is -44.51 kJ/mol. Assume that the specific heat capacity and density of the solution are the same as pure water and that no heat is lost to the surroundings during the dissolution process.

answered 2 days ago in Chemical thermodynamics

1 answer 49 views

What will be the effect of adding a buffer solution on the equilibrium constant of an acid-base reaction between a weak acid and its conjugate base? Provide a step-by-step calculation showing the change in equilibrium position and the final pH value after the addition of the buffer solution.

answered 5 days ago in Chemical equilibrium

1 answer 61 views

How does changing the pressure of a reaction system affect the rate of the reaction between hydrogen gas and nitrogen gas to form ammonia, according to Le Chatelier's principle?

asked 5 days ago in Chemical kinetics

1 answer 59 views

How can gas chromatography be used to analyze the composition of a mixture of alcohol and water?

asked Jan 29 in Analytical Chemistry

1 answer 5 views

Calculate the corrosion current density for a steel pipe of diameter 10 cm and length 20 m, which is exposed to a 0.1 M HCl solution. The corrosion potential of steel in the given environment is -0.5 V (SHE), the Tafel slope is 0.12 V/decade, and the temperature is 25°C. Consider the density of steel to be 7.86 g/cm³ and the flow rate of the solution to be 5 L/min.

asked Jan 23 in ElectroChemistry

1 answer 53 views

Calculate the amount of heat (in joules) released when 50 ml of 0.1 M hydrochloric acid (HCl) is mixed with 50 ml of 0.1 M sodium hydroxide (NaOH) at a constant pressure and a temperature of 25°C. The heat of neutralization of HCl and NaOH is -57.1 kJ/mol.

answered Jan 23 in ThermoChemistry

1 answer 21 views

Who is more likely to act on stereotypes?

answered Jan 20 in Psychology

0 answers 19 views

When did Maslow propose the hierarchy of needs theory?

asked Jan 17 in Psychology

1 answer 20 views

Where might the scope of a theory be limited in organisational psychology?

answered Jan 16 in Psychology

1 answer 26 views

How does social learning theory explain gender development?

answered Jan 16 in Psychology

1 answer 34 views

What is the cognitive approach in psychology?

answered Jan 13 in Psychology

1 answer 19 views

When bacteria enter the bloodstream, the result is what condition?

asked Jan 8 in Science

1 answer 49 views

Migration and hibernation are examples of behaviors that occur on what temporal basis?

answered Dec 31, 2024 in Science

1 answer 50 views

How is communication initiated and maintained with spacecraft?

asked Dec 30, 2024 in Science

1 answer 49 views

Einstein’s equation helps scientists understand what happens in nuclear reactions and why they produce so much what?

asked Dec 30, 2024 in Science

1 answer 50 views

Carbon dioxide does not rise like other gases because it has a density greater than what?

answered Dec 30, 2024 in Science

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