Recent activity by AprilCoghlan

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Calculate the standard enthalpy of formation of aluminum oxide from its elements given the following information:2 Al(s) + 3/2 O2(g) → Al2O3(s) ΔH°rxn = - 1675.7 kJ/molStandard enthalpy of formation of Al(s) = 0 kJ/molStandard enthalpy of formation of O2(g) = 0 kJ/mol

answered Feb 3 in ThermoChemistry

1 answer 62 views

Calculate the enthalpy of ionization of magnesium if 50 mL of 0.1 M HCl solution is added to 1 g of magnesium powder at 25°C, and the change in temperature is -10°C. The specific heat capacity of the solution is 4.18 J•g-1•K-1.

answered Jan 23 in ThermoChemistry

1 answer 40 views

When evaluating a theory, what is the criterion for completeness?

answered Jan 20 in Psychology

1 answer 30 views

Why are older adults less physiologically responsive to stress?

asked Jan 20 in Psychology

1 answer 18 views

What are the underlying principles of CBT?

answered Jan 16 in Psychology

1 answer 27 views

What type of amplitudes and wavelengths avoid detection in deep water?

answered Jan 8 in Science

1 answer 17 views

What term means the amount of a substance required to form a saturated solution in a given amount of solvent at a specified temperature?

answered Jan 8 in Science

1 answer 36 views

What leads to multiple copies of a chromosomal region?

asked Jan 7 in Science

1 answer 41 views

What does ubiquitin indicate about a protein's lifespan?

asked Jan 6 in Science

1 answer 9 views

Video and audio signals are broadcast on these?

asked Jan 2 in Science

1 answer 31 views

Anything that occupies space and has mass is known as what?

answered Dec 30, 2024 in Science

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