Recent activity by TanjaTrouton

1 answer 27 views

How can inadequate training for chemistry teachers be addressed to improve students' understanding and interest in chemistry?

answered 14 hours ago in Chemical education

1 answer 27 views

Calculate the standard enthalpy of formation (ΔH°f) of methane (CH4) given the following data: 2H2(g) + O2(g) → 2H2O(l) ΔH°rxn = -572 kJ/mol C(graphite) + O2(g) → CO2(g) ΔH°rxn = -394 kJ/mol Note: The enthalpy of formation of an element in its standard state is zero (0).

answered 2 days ago in ThermoChemistry

1 answer 53 views

A chemistry student needs to calculate the new value of the ionization constant (Ka) of a weak acid when the temperature is raised from 25°C to 45°C, given that the initial value of Ka is 1.8 x 10^-5 at 25°C and the enthalpy of ionization (ΔHion) is 50.2 kJ/mol.

asked Jan 22 in Chemical equilibrium

1 answer 18 views

What produces hormones referred to as thymosins, which contribute to the development of the immune response in infants?

asked Jan 7 in Science

1 answer 6 views

What is an involuntary muscle contraction that moves rapidly along an organ like a wave called?

answered Jan 6 in Science

1 answer 22 views

Photoautotrophs use what energy source to self-manufacture their own food?

asked Dec 31, 2024 in Science

1 answer 7 views

A diver's air bubbles increase in size as he approaches the surface because what decreases?

asked Dec 28, 2024 in Science

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