Questions by VidaMcAlroy6

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1 answer 29 views

Calculate the standard enthalpy change for the reaction of the combustion of 1 mole of liquid ethanol (C2H5OH) at 298K and 1 atm. The balanced chemical equation for the reaction is: C2H5OH(l) + 3O2(g) → 2CO2(g) + 3H2O(l)Given:ΔHf°(C2H5OH(l)) = -277.7 kJ/molΔHf°(CO2(g)) = -393.5 kJ/molΔHf°(H2O(l)) = -285.8 kJ/molΔHf°(O2(g)) = 0 kJ/mol

asked 2 days ago in Chemical thermodynamics

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1 answer 49 views

Calculate the bond order and predict the stability of O2 molecule using molecular orbital theory.

asked Jan 23 in Chemical bonding

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1 answer 81 views

A chemistry student wants to determine the concentration of copper(II) ions in a solution using electrochemical methods. The student prepares a copper electrode and a reference electrode, and sets up a cell with the copper electrode immersed in the solution and the reference electrode in the salt bridge. The standard cell potential is measured to be +0.34 V. If the student knows that the reduction of copper(II) to copper occurs at the copper electrode, what is the concentration of copper(II) ions in the solution?

asked Jan 22 in ElectroChemistry

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1 answer 20 views

Who proposed the fuzzy logic theory?

asked Jan 20 in Psychology

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1 answer 15 views

When evaluating cognitive behavioural theories, what is the role of empirical evidence?

asked Jan 15 in Psychology

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1 answer 26 views

What is the cognitive processing theory of development?

asked Jan 13 in Psychology

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1 answer 24 views

While most mammals give birth to live young, monotremes can do what?

asked Jan 8 in Science

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1 answer 27 views

Which virus causes cold sores?

asked Jan 8 in Science

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1 answer 18 views

Which therapy uses viruses to genetically modify diseased cells and tissues?

asked Jan 8 in Science

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1 answer 17 views

Gap genes are defined by the effect of what in that gene?

asked Dec 30, 2024 in Science

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1 answer 18 views

Burning forests, growing rice and raising livestock all cause a release of what into the atmosphere?

asked Dec 30, 2024 in Science

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