Recent activity by RoseScn6045

1 answer 50 views

Calculate the equilibrium concentrations of reactants and products for the following reaction at a temperature of 25°C and a pressure of 1 atm:2 NO(g) + Br2(g) ⇌ 2 NOBr(g)Given the initial concentrations are [NO] = 0.20 M, [Br2] = 0.35 M, and [NOBr] = 0.015 M. The equilibrium constant (Kc) for the reaction is 4.8 x 10^2 at 25°C.

asked Jan 23 in Chemical equilibrium

1 answer 59 views

Calculate the enthalpy change for the ionization of magnesium using the following information: - The first ionization energy of magnesium is 738 kJ/mol. - The second ionization energy of magnesium is 1450 kJ/mol.

asked Jan 23 in ThermoChemistry

1 answer 33 views

Calculate the enthalpy change for the combustion of 1 mole of methane gas (CH4) at standard conditions (25°C and 1 atm), given that the standard enthalpy of formation of methane is -74.87 kJ/mol and the standard enthalpy of formation of carbon dioxide (CO2) and water (H2O) are -393.51 kJ/mol and -285.83 kJ/mol, respectively.

answered Jan 23 in ThermoChemistry

1 answer 86 views

What is the pKa of the primary amine ethylamime if its pH in solution is 9.0?

answered Jan 21 in Organic Chemistry

1 answer 26 views

When did the DSM-5 change Asperger's syndrome to autism spectrum disorder ASD ?

asked Jan 20 in Psychology

1 answer 42 views

What is the main difference between eukaryotic and prokaryotic cells?

answered Jan 7 in Science

1 answer 63 views

Refraction happens when light bends from doing what in a new medium?

answered Dec 31, 2024 in Science

1 answer 35 views

Most flowers carry both stamens and carpels; however, a few species are capable of what and are nicknamed "perfect" flowers?

asked Dec 31, 2024 in Science

1 answer 26 views

All matter is composed of tiny indivisible particles called atoms. all atoms of an element are identical in mass and this?

answered Dec 30, 2024 in Science

1 answer 14 views

All forms of energy can be interconverted. three things can change the energy of an object: the transfer of heat, work performed on or by an object, or some combination of what?

answered Dec 30, 2024 in Science

1 answer 30 views

Abnormal electrical activity in the brain is the cause of what disease associated with seizures?

answered Dec 30, 2024 in Science

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