Recent activity by EsperanzaAch

1 answer 31 views

Calculate the standard enthalpy change for the phase transition reaction, where 1 mole of solid water (ice) is transformed into 1 mole of liquid water at a constant pressure of 1 atm and a temperature of 298 K. Given the specific heat capacity of ice is 2.108 J g^-1 K^-1 and the specific heat capacity of water is 4.184 J g^-1 K^-1. The molar enthalpy of fusion of water is 6.01 kJ/mol.

asked 2 days ago in Chemical thermodynamics

1 answer 24 views

Calculate the standard electrode potential for the following redox reaction at 298K:Fe3+(aq) + e- → Fe2+(aq) Given the E°(Fe3+/Fe2+) = +0.77V.

answered 2 days ago in Chemical thermodynamics

1 answer 67 views

What are the most effective strategies for overcoming difficulty in understanding complex chemical concepts, and how can they be applied to your current study of chemistry?

answered 6 days ago in Chemical education

1 answer 51 views

A chemistry student wants to determine the specific heat capacity of an unknown metal. The student performs a calorimetry experiment and records the following data: - 50 mL of water at 25°C was added to a calorimeter. - The initial temperature of the metal was 100°C. - The final temperature of the metal and water mixture was 30°C. - The mass of the metal was 100 grams.What is the specific heat capacity of the metal?

asked Jan 22 in ThermoChemistry

1 answer 53 views

Balance this chemical equation for the reaction between potassium permanganate (KMnO4) and sodium sulfite (Na2SO3) in acidic solution:KMnO4 + Na2SO3 + H2SO4 → K2SO4 + MnSO4 + Na2SO4 + H2O

answered Jan 21 in Inorganic Chemistry

1 answer 60 views

According to the door-in-the-face technique, what approach is used to get someone to agree to a request?

answered Jan 20 in Psychology

1 answer 41 views

What is the difference between a sample and a population in theory evaluation?

asked Jan 16 in Psychology

1 answer 32 views

What is a criterion?

answered Jan 16 in Psychology

1 answer 26 views

What is the self-determination theory of masculinity?

asked Jan 15 in Psychology

1 answer 18 views

When does social identity theory suggest self-esteem is important?

asked Jan 15 in Psychology

1 answer 6 views

What is the role of modelling in social learning theory?

asked Jan 15 in Psychology

1 answer 14 views

When the volume of a gas is decreased, what happens to its pressure?

asked Jan 8 in Science

1 answer 14 views

When an acid and base solutions react, they produce water and a neutral ionic compound known as what?

answered Jan 8 in Science

1 answer 17 views

What types of genes encode transcription factors?

answered Jan 8 in Science

1 answer 35 views

What are the two major types of seed plants called?

answered Jan 6 in Science

1 answer 19 views

Respectively, which parts of the circulatory system carry blood from the heart toward capillaries, and return blood to the heart from capillaries?

answered Dec 27, 2024 in Science

1 answer 57 views

What is the most effective color in interrupting the nighttime portion of the photoperiod?

asked Dec 27, 2024 in Science

1 answer 20 views

One type of tissue, called brown fat, is made up of cells packed full of what?

answered Dec 27, 2024 in Science

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