Recent activity by KitCogburn89

1 answer 39 views

Calculate the lattice energy of calcium fluoride (CaF2) given that the lattice enthalpy of formation of Ca2+ is +178 kJ/mol, the lattice enthalpy of formation of F- is -328 kJ/mol and the distance between the Ca2+ and F- ions is 231 pm.

answered Jan 23 in Inorganic Chemistry

1 answer 45 views

Calculate the enthalpy change (ΔH) for the dissolution of 10 grams of NaOH in 100 mL of water, given that the final temperature after mixing is 28°C and the initial temperature of water was 25°C. The specific heat capacity of water is 4.18 J/g°C. The molar mass of NaOH is 40.00 g/mol and the enthalpy of dissolution for NaOH is -44.51 kJ/mol.

asked Jan 23 in ThermoChemistry

1 answer 38 views

A chemistry student needs to analyze the composition of a soil sample using elemental analysis. The student has to determine the percentage of carbon, nitrogen, and sulfur present in the sample. How can the student perform elemental analysis and calculate the percentage of each element in the soil sample accurately?

answered Jan 22 in Analytical Chemistry

1 answer 33 views

What is the concept of self-actualization in humanistic psychology?

answered Jan 20 in Psychology

1 answer 14 views

What is the triangle theory of love?

asked Jan 16 in Psychology

1 answer 27 views

What parts of the planet does solar energy have difficulty reaching?

answered Jan 7 in Science

1 answer 49 views

What part of the eye controls the size of the pupil?

asked Jan 7 in Science

1 answer 16 views

What is the opposite of nuclear fusion?

answered Jan 7 in Science

1 answer 46 views

Boron only occurs naturally in compounds with what element?

answered Dec 30, 2024 in Science

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