Questions by Breanna4436

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1 answer 50 views

Calculate the heat of hydration of copper (II) sulfate pentahydrate given that 5.00 g of the hydrate was dissolved in 100.0 mL of water at 25°C, and the resulting solution temperature increased from 25°C to 30°C. The molar mass of copper (II) sulfate pentahydrate is 249.685 g/mol and the specific heat capacity of water is 4.184 J/g°C.

asked Jan 23 in ThermoChemistry

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1 answer 45 views

Calculate the enthalpy change (in kJ/mol) for the chemical reaction: C2H5OH(l) + 3O2(g) → 2CO2(g) + 3H2O(l) Given the standard enthalpies of formation (ΔHf°) for C2H5OH(l) = -277.6 kJ/mol, CO2(g) = -393.5 kJ/mol, and H2O(l) = -285.8 kJ/mol.

asked Jan 23 in Chemical thermodynamics

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1 answer 75 views

A chemistry student wants to know the specific heat capacity of aluminum. The student has an aluminum block weighing 100 grams at a temperature of 20°C. The student heats the block until its temperature reaches 90°C by adding 500 Joules of heat. What is the specific heat capacity of aluminum?

asked Jan 22 in ThermoChemistry

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1 answer 34 views

How can theory inform research in psychology?

asked Jan 20 in Psychology

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1 answer 26 views

When was the cognitive dissonance theory developed?

asked Jan 20 in Psychology

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1 answer 6 views

When evaluating the empirical evidence supporting a theory, what needs to be considered?

asked Jan 16 in Psychology

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1 answer 18 views

What is a confounding variable, and how can it be controlled for?

asked Jan 16 in Psychology

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1 answer 26 views

What is the difference between social anxiety disorder and shyness?

asked Jan 15 in Psychology

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1 answer 43 views

Air is said to reach what point, a term used by meteorologists, when humidity increases or temperature decreases?

asked Dec 30, 2024 in Science

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