Recent activity by RWTIona27307

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Calculate the standard enthalpy change for the reaction: 2Fe(s) + 3/2O2(g) → Fe2O3(s), given that the standard enthalpy of formation for Fe2O3(s) is -824.2 kJ/mol, the standard enthalpy of formation for Fe(s) is 0 kJ/mol, and the standard enthalpy of formation for O2(g) is 0 kJ/mol.

asked 2 days ago in Chemical thermodynamics

1 answer 32 views

Calculate the standard enthalpy change for the precipitation reaction between lead(II) nitrate and sodium chloride to form lead(II) chloride and sodium nitrate. The balanced chemical equation for the reaction is:Pb(NO3)2 (aq) + 2NaCl (aq) → PbCl2 (s) + 2NaNO3 (aq)

asked 2 days ago in Chemical thermodynamics

1 answer 62 views

What is the effect of temperature on the order parameters of a liquid crystal using Monte Carlo simulations?

answered 5 days ago in Computational Chemistry

1 answer 60 views

Calculate the enthalpy change for the following chemical reaction:2H2(g) + O2(g) -> 2H2O(l) given the following bond enthalpy values:H-H bond energy = 436 kJ/mol O=O bond energy = 498 kJ/mol H-O bond energy = 464 kJ/mol

answered Jan 23 in Chemical thermodynamics

1 answer 42 views

A sample of an unknown inorganic compound contains 44.44% magnesium, 22.22% sulfur, and 33.33% oxygen by mass. Determine the empirical formula of the compound. If the molar mass of the compound is 120 g/mol, what is its molecular formula?

answered Jan 22 in Inorganic Chemistry

1 answer 28 views

Compare the different theories of motivation in psychology.

asked Jan 20 in Psychology

1 answer 19 views

According to psychoanalysis, what is the id?

asked Jan 16 in Psychology

1 answer 20 views

Which perspective emphasises the role of inherited biological processes in explaining behaviour?

answered Jan 15 in Psychology

1 answer 34 views

Who developed Critical Discourse Analysis?

answered Jan 15 in Psychology

1 answer 23 views

What is replicability?

answered Jan 15 in Psychology

1 answer 19 views

What is the limbic system?

asked Jan 14 in Psychology

1 answer 24 views

What will happen to sea levels due to increased global temperatures?

answered Jan 8 in Science

1 answer 25 views

What is the attraction of oppositely charged ions caused by electron transfer called?

asked Jan 6 in Science

1 answer 17 views

What form do biofuels take that makes them very useful?

answered Jan 6 in Science

1 answer 35 views

Weathering is fundamental to the creation of what, which exists as a very thin layer over solid rock?

asked Jan 2 in Science

1 answer 47 views

The outermost layer of the leaf is the epidermis; it is present on both sides of the leaf and is called the upper and lower epidermis, respectively. botanists call the upper side the adaxial surface (or adaxis) and the lower side this?

answered Jan 2 in Science

1 answer 25 views

The measurement of the extent of something along its greatest dimension is its what?

asked Jan 2 in Science

1 answer 17 views

Some reactions need extra help to occur quickly. they need another substance called what?

answered Dec 31, 2024 in Science

1 answer 22 views

Earthquake waves that travel trhough underground rocks in all directions are known as?

answered Dec 30, 2024 in Science

1 answer 10 views

Amino groups are found within amino acids, nicknamed the building blocks of what?

answered Dec 30, 2024 in Science

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