Recent activity by AlycePulley2

1 answer 23 views

Calculate the standard heat of formation of water (H2O) using the bond dissociation energies of H2 and O2 and the standard heat of combustion of methane (CH4).

answered 2 days ago in Chemical bonding

1 answer 46 views

What effect does adding a catalyst to a chemical system have on the equilibrium position and how does this impact the overall rate of reaction? Use the example of the Haber process to illustrate your answer with calculations.

asked 6 days ago in Chemical equilibrium

1 answer 50 views

Calculate the heat of hydration for the compound sodium sulfate (Na2SO4) given that 3 moles of water are released when 1 mole of the compound dissolves in water. The enthalpy of solution for sodium sulfate is -138 kJ/mol, and the enthalpy of hydration for water is -286 kJ/mol.

answered Jan 23 in ThermoChemistry

1 answer 48 views

Calculate the enthalpy of adsorption for the adsorption of 5 grams of hydrogen gas on a solid adsorbent at a temperature of 298 K, if the pressure of hydrogen gas is 2.5 atm and the volume of the adsorbent is 100 cm3. Assume ideal gas behavior and use the equation ΔH = -q/n, where ΔH is the enthalpy of adsorption, q is the heat absorbed, and n is the number of moles of gas adsorbed.

asked Jan 23 in ThermoChemistry

1 answer 6 views

Why is memory significant in psychology?

answered Jan 15 in Psychology

1 answer 23 views

Nutrients the body needs in relatively large amounts are called what?

answered Dec 31, 2024 in Science

1 answer 30 views

How long ago did the ancestors of mammals evolve?

answered Dec 30, 2024 in Science

1 answer 20 views

As lava cools, tiny iron-rich crystals line up with earth’s what?

answered Dec 30, 2024 in Science

1 answer 8 views

The primary application of biotechnology is in what field?

asked Dec 27, 2024 in Science

1 answer 43 views

What chemicals in the liver support glucose homeostasis?

asked Dec 27, 2024 in Science

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