Answers by DonnellLovel

0 votes

54 views

A chemistry student needs to determine the standard enthalpy change for the formation of NH3(g) from its constituent elements, using Hess's Law calculations. The student is given the following information:ΔHf°(NH3) = -46 kJ/molΔHf°(N2) = 0 kJ/molΔHf°(H2) = 0 kJ/molΔH298°(N2H4) = 95 kJ/molΔHf°(N2H4) = 50 kJ/mol2NH3(g) + N2H4(l) → 3N2(g) + 4H2(g)What is the value of ΔHf° for NH3, based on the above data?

answered Jan 22 in ThermoChemistry

0 votes

57 views

According to the diathesis-stress model, what role does family history play in mental illness?

answered Jan 17 in Psychology

0 votes

51 views

What is the main premise of attachment theory?

answered Jan 16 in Psychology

0 votes

48 views

According to the ecological psychology theory, how do we perceive our environment?

answered Jan 15 in Psychology

0 votes

43 views

What is the therapeutic alliance, and why is it important in psychoanalysis?

answered Jan 13 in Psychology

0 votes

46 views

The rise in greenhouse gases has what effect on the temperature of earth?

answered Jan 2 in Science

0 votes

27 views

Oysters require a certain minimum population density because they must be in close proximity to do this?

answered Dec 31, 2024 in Science

0 votes

33 views

In what country can some of the largest natural crystals be found?

answered Dec 31, 2024 in Science

0 votes

33 views

What is the smallest portion of a crystal lattice?

answered Dec 28, 2024 in Science

...