Questions by Felica875311

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1 answer 39 views

Calculate the standard enthalpy change for the reaction of 25.0 mL of 0.100 M HCl with 25.0 mL of 0.100 M NaOH at 25°C, given that the specific heat capacity of the solution is 4.18 J/g°C and the density of the solution is 1.00 g/mL. The balanced chemical equation for the reaction is:HCl(aq) + NaOH(aq) → NaCl(aq) + H2O(l) Assume the heat of the reaction is absorbed by the solution and the reaction has reached equilibrium.

asked Feb 3 in Chemical thermodynamics

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1 answer 64 views

What is the concentration of iron (II) ions in a water sample if the absorbance of the sample at a wavelength of 565 nm is measured to be 0.842 and it was found that a 1 cm cuvette contains 1.25 x 10^-4 moles of iron (II) ions? (The molar absorptivity of iron (II) ions at 565 nm is 1.9 x 10^4 L/mol cm).

asked Jan 30 in Analytical Chemistry

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1 answer 9 views

What is the role of Chronosystem in the Ecological Systems Theory?

asked Jan 15 in Psychology

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1 answer 40 views

What are the differences between the symptoms and causes of stress and burnout?

asked Jan 13 in Psychology

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1 answer 18 views

What oily substance prevents the hair and skin of living things from drying out?

asked Jan 7 in Science

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