Recent activity by DorieBarth39

1 answer 23 views

What is the effect of the chemical composition of a polymer-based adhesive on its bonding strength and durability?

answered 1 day ago in Polymer Chemistry

1 answer 38 views

How can chemistry students effectively learn and apply experimental techniques when faced with limited opportunities for hands-on experimentation in the classroom setting?

answered Feb 4 in Chemical education

1 answer 51 views

Determine the standard enthalpy of formation of nitrogen dioxide (NO2) given that the balanced equation for the combustion of one mole of NO2 is:4NO2(g) + 6H2O(l) → 4HNO3(aq) + 2NO(g)The standard enthalpies of formation for HNO3(l), H2O(l), and NO(g) are -174.1 kJ/mol, -285.8 kJ/mol, and 90.4 kJ/mol, respectively.

answered Feb 4 in Chemical thermodynamics

1 answer 38 views

Calculate the standard enthalpy change for the formation of ethylene glycol (C2H6O2) from its elements given that the standard enthalpies of formation of carbon dioxide, water, and ethylene glycol are -393.5 kJ/mol, -285.8 kJ/mol, and -421.1 kJ/mol respectively.

answered Feb 3 in Chemical thermodynamics

1 answer 76 views

What functional groups are present in Compound X based on the IR spectrum provided? Be sure to identify specific peaks and explain their corresponding functional groups.

asked Jan 30 in Analytical Chemistry

1 answer 34 views

Calculate the Gibbs free energy change (ΔG) for the reaction:N2(g) + 3H2(g) ⇌ 2NH3(g)Given the standard Gibbs free energy of formation (ΔG°f) values at 298 K are:ΔG°f of NH3(g) = -16.6 kJ/molΔG°f of N2(g) = 0 kJ/molΔG°f of H2(g) = 0 kJ/molAssume ideal gas behavior for all gases involved in the reaction.

asked Jan 23 in Chemical thermodynamics

1 answer 76 views

A chemistry student needs to find the percent composition of a compound with the empirical formula CCl. The compound has a molar mass of 98.96 g/mol. What is the percent composition of this compound?

asked Jan 22 in Inorganic Chemistry

1 answer 14 views

How do behaviour and evolutionary psychology explain sexual attraction?

answered Jan 14 in Psychology

1 answer 29 views

What is grouping?

answered Jan 14 in Psychology

1 answer 28 views

Compare and contrast the validity and reliability of norm-referenced and criterion-referenced tests.

answered Jan 13 in Psychology

1 answer 28 views

What term describes the overall ability of an animal to survive and produce offspring?

asked Jan 7 in Science

1 answer 63 views

What are ionic solutes?

asked Jan 3 in Science

1 answer 74 views

What are inorganic compounds that take the form of discrete molecules called?

answered Jan 3 in Science

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