Questions by LesleyStyers

0 votes

1 answer 34 views

How does adding a strong acid or base affect the pH and equilibrium concentration of a weak acid or base such as acetic acid in a solution and how can we predict these changes using the equilibrium constant expression?

asked 5 days ago in Chemical equilibrium

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1 answer 47 views

Calculate the enthalpy change for the isomerization of butene-1 to butene-2 given that the heat of combustion of butene-1 and butene-2 are -2874 kJ/mol and -2854 kJ/mol respectively. Assume all reactants and products are in the gaseous state and that the reaction is carried out at constant pressure.

asked Jan 23 in ThermoChemistry

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1 answer 46 views

Calculate the bond length between two oxygen atoms in an O2 molecule, given that the O-O bond energy is 498 kJ/mol and the reduced mass of the system is 15.9994 g/mol.

asked Jan 23 in Chemical bonding

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1 answer 40 views

A chemistry student wants to measure the zeta potential of a colloidal solution. The student has chosen the appropriate instrument, but needs to determine the optimal pH range for the solution in order to obtain accurate and meaningful results. What is the recommended method to determine the optimal pH range for measuring the zeta potential of a colloidal solution, and how can the student ensure accurate and reliable measurements using this method?

asked Jan 22 in Surface Chemistry

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1 answer 41 views

Where does explanatory power fit in theory evaluation?

asked Jan 16 in Psychology

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1 answer 25 views

What sort of gas is found in balloons and blimps, and is used to make them float in the sky?

asked Jan 7 in Science

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1 answer 54 views

What part of the body do fish use to absorb oxygen?

asked Jan 7 in Science

0 votes

1 answer 21 views

What do you call any substance that opposes coagulation?

asked Jan 6 in Science

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1 answer 43 views

Silver, gold, and copper all conduct what very well?

asked Dec 31, 2024 in Science

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1 answer 59 views

Sepals, petals, pistils, and stamens are contained in all what, which are actually modified leaves or sporophylls organized around a central stalk?

asked Dec 31, 2024 in Science

0 votes

1 answer 31 views

Bacteria can be chemotrophs, which obtain what by breaking down chemical compounds in their environment?

asked Dec 30, 2024 in Science

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