Recent activity by Dawn6982987

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How does altering the pressure affect the equilibrium position in a reversible chemical reaction, and what are the factors that determine whether the reaction will shift to the side with a greater number of moles of gas or to the side with a lesser number of moles of gas? Provide an explanation using an example of a gaseous reaction.

answered Jan 31 in Chemical equilibrium

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Calculate the enthalpy change required to ionize 2 moles of magnesium atoms to form Mg2+ ions, given that the first ionization energy of magnesium is 737 kJ/mol and the second ionization energy is 1450 kJ/mol.

answered Jan 23 in ThermoChemistry

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A chemistry student needs to determine the standard enthalpy change for the formation of NH3(g) from its constituent elements, using Hess's Law calculations. The student is given the following information:ΔHf°(NH3) = -46 kJ/molΔHf°(N2) = 0 kJ/molΔHf°(H2) = 0 kJ/molΔH298°(N2H4) = 95 kJ/molΔHf°(N2H4) = 50 kJ/mol2NH3(g) + N2H4(l) → 3N2(g) + 4H2(g)What is the value of ΔHf° for NH3, based on the above data?

answered Jan 22 in ThermoChemistry

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What are some factors that might contribute to cognitive reserve?

answered Jan 17 in Psychology

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What are some criticisms of discursive psychology?

answered Jan 17 in Psychology

1 answer 23 views

Where could a theory in organisational psychology be expanded upon?

asked Jan 16 in Psychology

1 answer 19 views

What is the difference between metapsychology and cognitive science?

asked Jan 16 in Psychology

1 answer 9 views

Who are the common psychologists who proposed a cognitive-behavioural multimodal approach?

asked Jan 15 in Psychology

1 answer 44 views

What is the difference between convergent and divergent thinking?

answered Jan 14 in Psychology

1 answer 19 views

What process involves two cell divisions and produces four haploid cells?

answered Jan 7 in Science

1 answer 20 views

What is the name for the cooler, darker areas on the sun’s surface?

answered Jan 7 in Science

1 answer 40 views

What is a substance that can not be broken down any further into other substances?

asked Jan 6 in Science

1 answer 19 views

What do fission reactors use to slow down the neutrons?

answered Jan 6 in Science

1 answer 51 views

What are the two types of charges?

answered Jan 6 in Science

1 answer 33 views

What are the cliffs called which are created when waves erode a rocky shoreline, leaving a vertical wall of exposed rock layers?

answered Jan 3 in Science

1 answer 32 views

How many different types of stresses are there?

answered Dec 30, 2024 in Science

1 answer 58 views

Underground rock in a molten state is called?

answered Dec 28, 2024 in Science

1 answer 11 views

What functions as a framework that reinforces the shape of the leaf?

asked Dec 27, 2024 in Science

1 answer 44 views

The hot liquid rock on the surface is called what?

asked Dec 27, 2024 in Science

1 answer 57 views

In which kind of species do open circulatory systems serve additional functions?

answered Dec 27, 2024 in Science

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