Recent activity by QDHRoosevelt

1 answer 33 views

Calculate the standard enthalpy change for the following reaction involving liquids at 298 K: C2H5OH(l) + 3O2(g) → 2CO2(g) + 3H2O(l)Given the standard enthalpies of formation of C2H5OH(l), CO2(g) and H2O(l) are −277.6 kJ/mol, −393.5 kJ/mol and −285.8 kJ/mol respectively.

asked 2 days ago in Chemical thermodynamics

1 answer 29 views

How does changing the concentration of reactants or products affect the equilibrium position of a chemical reaction? Provide a specific example to support your answer.

asked 2 days ago in Chemical equilibrium

1 answer 22 views

How does changing the concentration of reactants affect the rate and sustainability of a specific chemical reaction? Provide experimental evidence to support your answer.

asked 2 days ago in Chemical kinetics

1 answer 62 views

How do changes in the DNA sequence affect the binding affinity and specificity of a transcription factor?

asked 5 days ago in BioChemistry

1 answer 45 views

What is the temperature at which ice and water are in equilibrium at a pressure of 1 atm? Calculate the amount of heat in joules required to melt 100 g of ice at this temperature assuming no change in pressure. (Hint: use the heat of fusion for water, which is 6.01 kJ/mol).

answered 5 days ago in Physical Chemistry

1 answer 20 views

What is a criticism of positive psychology?

answered Jan 16 in Psychology

1 answer 7 views

When someone falls, the kinetic energy the person has upon reaching the floor is the amount of what energy lost by falling through height?

asked Jan 8 in Science

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