Questions by ErnaGrimshaw

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1 answer 28 views

Calculate the standard enthalpy change of the precipitation reaction between 50.0 mL of 0.100 M Pb(NO3)2 and excess 0.100 M NaCl solution at 25°C given that the reaction is Pb(NO3)2 (aq) + 2NaCl (aq) → PbCl2(s) + 2NaNO3 (aq) and the enthalpy of formation of NaNO3 (aq) and NaCl (aq) are -467.7 kJ/mol and -411.2 kJ/mol respectively.

asked 2 days ago in Chemical thermodynamics

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1 answer 27 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 2 days ago in Chemical thermodynamics

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1 answer 29 views

What two types of atoms bond to form sulfate minerals?

asked Jan 8 in Science

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1 answer 23 views

Biceps brachii, brachialis, and brachioradialis work to flex what part of the body?

asked Dec 30, 2024 in Science

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1 answer 46 views

After fertilization is complete, no other sperm can enter. the fertilized ovule forms the seed, whereas the tissues of the ovary become this?

asked Dec 30, 2024 in Science

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1 answer 23 views

What is the measure of the change in the velocity of a moving object called?

asked Dec 27, 2024 in Science

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