Answers by HeidiWindsor

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Calculate the standard enthalpy change for the dissolution of 5g of sodium chloride in 100mL of water at 25°C, given that the molar enthalpy of dissolution of NaCl is -3.9 kJ/mol.

answered Feb 3 in Chemical thermodynamics

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A chemistry student is given a sample of a solution containing a known amount of sodium chloride (NaCl) dissolved in water. The student needs to determine the concentration of the NaCl in the solution, using mass balance calculations. The student has access to a balance and other necessary laboratory equipment. What is the concentration of NaCl in the solution given to the student? How much NaCl is present in the solution, and how much water was used to dissolve it?

answered Jan 22 in Analytical Chemistry

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Please evaluate the ethical implications of using deception in research.

answered Jan 17 in Psychology

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What is it called when crystals form from magma?

answered Jan 6 in Science

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Oxygen has the second highest electronegativity of any element; consequently, it prefers to share or accept electrons from other elements. only with fluorine does oxygen form compounds in this?

answered Dec 31, 2024 in Science

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