Answers by CyrusG329117

0 votes

25 views

Calculate the standard enthalpy of formation of aluminum oxide from its elements given the following information:2 Al(s) + 3/2 O2(g) → Al2O3(s) ΔH°rxn = - 1675.7 kJ/molStandard enthalpy of formation of Al(s) = 0 kJ/molStandard enthalpy of formation of O2(g) = 0 kJ/mol

answered 1 day ago in ThermoChemistry

0 votes

51 views

Calculate the mass of sodium chloride (NaCl) produced when 2.5 moles of sodium (Na) react completely with excess chlorine gas (Cl2). (Hint: Use the balanced chemical equation 2Na + Cl2 → 2NaCl)

answered Jan 23 in Chemical reactions

0 votes

22 views

According to the social identity theory, what is the basis of our self-concept?

answered Jan 20 in Psychology

0 votes

3 views

Why is early identification of mental illness crucial?

answered Jan 17 in Psychology

0 votes

29 views

Why is the positive psychology approach criticised?

answered Jan 16 in Psychology

0 votes

42 views

What molecules with a nitrogen base are the basic components of nucleic acids?

answered Jan 7 in Science

0 votes

44 views

The only obvious difference between boys and girls at birth is what type of organs?

answered Jan 2 in Science

0 votes

55 views

Sedimentary rocks form in what kind of layers?

answered Dec 31, 2024 in Science

0 votes

31 views

Quantities have two parts: the number (how many) and what else?

answered Dec 31, 2024 in Science

0 votes

26 views

Chemical and physical changes in a system may be accompanied by an increase or a decrease in the disorder of the system, corresponding to an increase or decrease in what?

answered Dec 30, 2024 in Science

0 votes

27 views

What has atoms with unstable nuclei?

answered Dec 28, 2024 in Science

0 votes

23 views

What process refers to the conversion of atmospheric nitrogen to ammonia?

answered Dec 27, 2024 in Science

0 votes

27 views

What are the two distinct types of cells found in the animal kingdom?

answered Dec 27, 2024 in Science

...