Questions by JulietaNesbi

0 votes

1 answer 56 views

Here's an example problem for the student to solve:When 0.10 moles of a weak acid HA are dissolved in 1.00 L of water, the pH of the resulting solution is measured to be 4.20. Calculate the equilibrium constant (Ka) for the dissociation of HA if the acid is known to be 10% ionized.

asked Feb 4 in Chemical equilibrium

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1 answer 43 views

Calculate the standard enthalpy change for the phase transition of ice to water at 298 K, given that the heat of fusion of ice is 6.01 kJ/mol and the molar heat capacity of ice and water are 37.0 J/(mol*K) and 75.3 J/(mol*K), respectively.

asked Feb 3 in Chemical thermodynamics

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1 answer 57 views

Calculate the heat capacity of a 25.0 g sample of copper, given that it was heated from 25°C to 50°C when it absorbed 209 J of heat. The specific heat capacity of copper is 0.385 J/g°C.

asked Jan 23 in Chemical thermodynamics

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1 answer 47 views

According to Erikson's psychosocial theory, what is the final stage of development?

asked Jan 20 in Psychology

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1 answer 21 views

What is grief support?

asked Jan 14 in Psychology

0 votes

1 answer 77 views

Instead of wood, what do some fireplaces use?

asked Dec 31, 2024 in Science

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