Recent activity by QOBGertrude3

1 answer 38 views

Determine the number of electrons transferred in the following electrochemical reaction: Cu(s) + 2Ag+(aq) → Cu2+(aq) + 2Ag(s) Show the calculation steps and write the balanced half-reactions with the number of electrons transferred.

answered 1 day ago in ElectroChemistry

1 answer 35 views

Calculate the standard enthalpy change for the reaction between hydrochloric acid (HCl) and ammonia (NH3) to produce ammonium chloride (NH4Cl) if the reaction is carried out in a solution of water (H2O), given the following information:HCl(aq) + H2O(l) -> H3O+(aq) + Cl-(aq) ΔH1 = -74.8 kJ/mol NH3(aq) + H2O(l) ⇌ NH4+(aq) + OH-(aq) ΔH2 = -51.8 kJ/mol NH4Cl(s) → NH4+(aq) + Cl-(aq) ΔH3 = 15.2 kJ/mol Ensure that the answer is in kJ/mol.

asked 2 days ago in Chemical thermodynamics

1 answer 38 views

Calculate the enthalpy change for the isomerization of n-butane to iso-butane if the standard enthalpy of formation for n-butane is -125.7 kJ/mol and that for iso-butane is -147.4 kJ/mol. The isomerization reaction occurs at a constant pressure of 1 atm and at a temperature of 298 K.

asked Jan 23 in ThermoChemistry

1 answer 15 views

When evaluating a cognitive behavioural theory, what is meant by ecological validity?

answered Jan 15 in Psychology

1 answer 52 views

What is the main critique of the biopsychosocial model?

answered Jan 15 in Psychology

1 answer 19 views

When evaluating the four-factor model of grief, what strength can be pointed out?

answered Jan 15 in Psychology

1 answer 26 views

What is falsificationism?

answered Jan 15 in Psychology

1 answer 52 views

What is the role of storytelling in indigenous psychology?

asked Jan 15 in Psychology

1 answer 41 views

What plays the same role in rotational motion that force plays in linear motion.

asked Jan 7 in Science

1 answer 38 views

What is defined as the velocity of the object at a given moment?

asked Jan 6 in Science

1 answer 19 views

What do the letters in our blood types represent?

asked Jan 6 in Science

1 answer 51 views

What branch of science is the study of the solid earth?

asked Jan 6 in Science

...