Questions by BonnieEdens

0 votes

1 answer 23 views

Given the following equations and their respective enthalpy changes:1) 2H2 (g) + O2 (g) → 2H2O (l) ΔH = -484 kJ/mol 2) C2H5OH (l) + 3O2 (g) → 2CO2 (g) + 3H2O (l) ΔH = -1,367 kJ/mol 3) C2H5OH (l) → C2H4 (g) + H2O (g) ΔH = +44 kJ/mol Using Hess’s Law, determine the ΔH for the following reaction: C2H5OH (l) → 2CO2 (g) + 3H2 (g)

asked 1 day ago in Chemical reactions

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1 answer 60 views

Identify the unknown compound using mass spectrometry for a sample that has a molecular ion peak of m/z 167 and fragmentation peaks of m/z 150, 135, 77 and 49.

asked 6 days ago in Analytical Chemistry

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1 answer 15 views

Please evaluate Rosenhan's study on psychiatric hospitals.

asked Jan 20 in Psychology

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1 answer 23 views

Which word describes how an extracellular solution can change the volume of a cell by affecting osmosis?

asked Jan 8 in Science

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1 answer 24 views

Which form of digestion is a purely physical process that does not change the chemical nature of the food?

asked Jan 8 in Science

0 votes

1 answer 17 views

When an action and reaction occur, what is transferred from one object to the other, yet in combination it remains the same?

asked Jan 8 in Science

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1 answer 23 views

What protects reptiles from injury and loss of water?

asked Jan 7 in Science

0 votes

1 answer 20 views

What is it called when minerals replace the organic material to create fossils?

asked Jan 6 in Science

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