Questions by RheaNazario

0 votes

1 answer 34 views

Calculate the standard enthalpy change (ΔH°) for the reaction where 1 mol of solid sodium hydroxide (NaOH) dissolves in excess water to produce 1 mol of aqueous solution and releases heat. Given that the standard enthalpy of formation (ΔH°f) for NaOH(s) is -425.6 kJ/mol, the heat capacity of the aqueous solution is 4.18 J/gK, and the change in temperature (ΔT) is observed to be 8.0°C for 250 g of the solution.

asked 2 days ago in Chemical thermodynamics

0 votes

1 answer 65 views

What is the effect of adding a catalyst on the equilibrium position of a redox reaction between hydrogen peroxide and iodide ions? Calculate the new equilibrium constant and predict the direction of the shift in equilibrium.

asked 6 days ago in Chemical equilibrium

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1 answer 70 views

The enzyme pepsin plays an important role in the digestion of proteins by breaking down intact protein to what short-chain amino acids?

asked Jan 2 in Science

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1 answer 20 views

What is the dominant form of plant life in most terrestrial ecosystems, comprising about 90 percent of all plant species?

asked Dec 27, 2024 in Science

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