Recent activity by DarcyStevens

1 answer 27 views

Calculate the standard electrode potential for the redox reaction that occurs when a silver electrode is placed in a solution containing 0.1 M Ag+ ions and a platinum electrode is placed in a solution containing 0.1 M H+ ions at standard conditions. The reduction half-reaction for Ag+ is Ag+ (aq) + e- → Ag(s), and the reduction half-reaction for H+ is H+ (aq) + e- → 1/2 H2 (g).

answered 2 days ago in Chemical thermodynamics

1 answer 44 views

What is the molecular structure and bonding in a water molecule and how do they contribute to the molecule's various properties, such as its polarity and ability to form hydrogen bonds with other molecules?

asked 6 days ago in Chemical education

1 answer 43 views

Calculate the amount of heat required to melt 25 grams of ice at 0°C. The enthalpy of fusion of ice is 6.01 kJ/mol.

answered Jan 23 in ThermoChemistry

1 answer 39 views

A student needs to calculate the standard enthalpy change of combustion for propane using Hess's Law. They have the following information: C3H8(g) + 5O2(g) → 3CO2(g) + 4H2O(l) ΔH° = -2220 kJ/mol 2H2(g) + O2(g) → 2H2O(l) ΔH° = -484 kJ/mol 3C(s) + 2H2(g) → C3H8(g) ΔH° = +51 kJ/mol What is the standard enthalpy change of combustion for propane?

asked Jan 22 in ThermoChemistry

1 answer 18 views

Why did Jean Piaget argue that children's thinking changes qualitatively as they develop?

answered Jan 20 in Psychology

1 answer 18 views

What is the relationship between language and mental rotation?

asked Jan 17 in Psychology

1 answer 44 views

According to Beck's cognitive model, what is the cause of depression?

answered Jan 16 in Psychology

1 answer 19 views

What is the volley principle?

asked Jan 14 in Psychology

1 answer 5 views

What are the differences between Western and Eastern approaches to cognition?

asked Jan 14 in Psychology

1 answer 47 views

When magma cools slowly, what texture does it have?

asked Jan 8 in Science

1 answer 59 views

What term is used to describe the total spread of values in a sample?

answered Jan 8 in Science

1 answer 24 views

Water is the solvent in solutions called acids and?

answered Jan 2 in Science

1 answer 41 views

The temperature of the products is typically lower than the temperature of the reactants in what type of reaction?

answered Jan 2 in Science

1 answer 35 views

The process of a liquid becoming a gas is called boiling, while the process of a solid becoming a gas is called what?

asked Jan 2 in Science

1 answer 26 views

Many european and asiatic elms are less susceptible to dutch elm disease than which elms?

answered Dec 28, 2024 in Science

1 answer 14 views

What are all tissues external to the vascular cambium called?

answered Dec 27, 2024 in Science

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