Recent activity by BernieMagee

1 answer 45 views

Calculate the entropy change (∆S) for the reaction between 2.0 moles of hydrogen gas (H2) and 1.0 mole of oxygen gas (O2) at constant pressure and a temperature of 298 K, given the standard molar entropy values for H2 and O2 to be 130.7 J/K•mol and 205.0 J/K•mol, respectively.

answered Jan 23 in ThermoChemistry

1 answer 56 views

Calculate the enthalpy change when 2.5 moles of methane gas is completely burned in excess oxygen gas if the enthalpy of formation of methane is -74.8 kJ/mol and the enthalpy of formation of water is -285.8 kJ/mol, and the enthalpy of formation of carbon dioxide is -393.5 kJ/mol.

asked Jan 23 in ThermoChemistry

1 answer 52 views

A solution of nitrogen dioxide, NO2 gas, at a pressure of 2.50 atm and temperature of 300 K, reacts with oxygen gas, O2, to form nitrogen oxide, NO, and dioxide, NO2. Write the balanced chemical equation for the reaction and determine the equilibrium concentrations of all species if the value of the equilibrium constant, Kc, at 300 K is 4.0 x 10^-4.

answered Jan 22 in Chemical equilibrium

1 answer 40 views

How can Erikson's stages of psychosocial development be evaluated?

asked Jan 16 in Psychology

1 answer 10 views

What is the main focus of cross-cultural psychology?

answered Jan 16 in Psychology

1 answer 37 views

The phase transition of a substance changing from a liquid state to a gaseous state is an example of what?

asked Jan 2 in Science

1 answer 13 views

Making a specific statement based on a general principle is the definition of what type of reasoning?

answered Dec 31, 2024 in Science

1 answer 37 views

For feeding, the head contains one pair of mandibles and two pairs of what?

asked Dec 30, 2024 in Science

1 answer 32 views

An example of irreversible denaturation of what substance occurs to the liquid albumin when an egg is fried?

asked Dec 30, 2024 in Science

1 answer 41 views

What do you call an incomplete outer shell of an atom?

asked Dec 27, 2024 in Science

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