Recent activity by LonBaskett07

1 answer 30 views

How can chemistry teachers provide hands-on experiences to students in remote learning environments where in-person laboratory access is limited?

asked 13 hours ago in Chemical education

1 answer 37 views

Calculate the standard enthalpy change (ΔH°) for the reaction of combustion of 1 mole of ethanol (C2H5OH) given that the standard enthalpy of formation (ΔH°f) for ethanol and carbon dioxide (CO2) are -277.7 kJ/mol and -393.5 kJ/mol respectively, and the standard enthalpy of formation (ΔH°f) for water (H2O) is -285.8 kJ/mol. The balanced chemical equation for the reaction is as follows:C2H5OH (l) + 3 O2 (g) → 2 CO2 (g) + 3 H2O (l)

asked 2 days ago in Chemical thermodynamics

1 answer 48 views

How can the concentration of chloride ions in a sample solution be determined using an ion-selective electrode?

answered Jan 29 in Analytical Chemistry

1 answer 71 views

A sample of argon gas is contained in a container kept at constant volume. The temperature of the gas is slowly increased by step-wise increments. The energy absorbed by the sample at each increment is recorded, and the average energy of the gas at each temperature is calculated. Using this data, the student is asked to determine the heat capacity of the gas at constant volume and explain why this value only depends on the temperature of the system.

asked Jan 22 in Physical Chemistry

1 answer 27 views

A chemical plant has a mixture of ethanol and water with a known composition. The plant wants to separate the mixture using a distillation column. As a chemistry student, design a feasible distillation column that can effectively separate the mixture with the given composition. You need to specify the height, diameter, number of trays, reflux ratio, and other necessary parameters needed for designing the column. You are also required to provide an explanation for the choice of each parameter.

asked Jan 22

1 answer 18 views

Please compare the cognitive and behavioural symptoms of depression.

answered Jan 17 in Psychology

1 answer 25 views

How are personality traits different from personality types?

asked Jan 15 in Psychology

1 answer 35 views

Who proposed the Dual-Process Model of coping with bereavement?

asked Jan 15 in Psychology

1 answer 21 views

What term is used to describe the full range of electromagnetic waves?

answered Jan 8 in Science

1 answer 19 views

What contracts to move food throughout the gastrointestinal tract?

answered Jan 6 in Science

1 answer 16 views

What basic structures are the site of all the life functions of an organism?

answered Jan 6 in Science

1 answer 26 views

Unlike bryophyte and fern spores (which are haploid cells dependent on moisture for rapid development of gametophytes), seeds contain a diploid embryo that will germinate into what?

asked Jan 2 in Science

1 answer 24 views

Some of the small moons of saturn are found within what features distinctive to the planet?

answered Dec 31, 2024 in Science

1 answer 44 views

How many bones fuse together to form the cranium?

answered Dec 30, 2024 in Science

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