Questions by HannahAtkin

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1 answer 30 views

Calculate the standard enthalpy change for the sublimation of iodine at 25°C, given that the standard enthalpy of fusion of iodine is 15.7 kJ/mol and the standard enthalpy of vaporization of iodine is 41.0 kJ/mol. (The molar mass of iodine is 126.90 g/mol)

asked Feb 3 in Chemical thermodynamics

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1 answer 48 views

Calculate the lattice energy of magnesium oxide (MgO) given that the lattice enthalpy of magnesium (Mg) is 3944 kJ/mol and that of oxygen (O) is 751 kJ/mol.

asked Jan 23 in Inorganic Chemistry

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1 answer 52 views

A chemistry student needs to determine the new equilibrium concentration of a complex ion, if the temperature is increased by 10°C from the initial temperature of 25°C, and the equilibrium constant for the reaction is 0.056. The initial concentration of the reactants are: [Fe3+] = 0.025 M, [SCN-] = 0.015 M, and [FeSCN2+] = 0.007 M.

asked Jan 22 in Chemical equilibrium

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1 answer 45 views

How does evolutionary psychology account for cross-cultural differences in behaviour?

asked Jan 15 in Psychology

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1 answer 8 views

What are the closest relatives to modern angiosperms?

asked Jan 3 in Science

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1 answer 53 views

Some bacteria also have tail-like structures called what?

asked Dec 31, 2024 in Science

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1 answer 35 views

What is the name of the process that changes some chemical substances into others?

asked Dec 28, 2024 in Science

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