Recent activity by RacheleChewi

1 answer 31 views

Here's a precise problem for the student to solve in Balancing Chemical Equations:Balance the chemical equation for the reaction between iron (III) oxide and carbon monoxide to produce iron and carbon dioxide gas:Fe2O3(s) + CO(g) → Fe(s) + CO2(g)

answered 1 day ago in Chemical reactions

1 answer 38 views

Calculate the standard enthalpy change for the reaction between methane and oxygen to form carbon dioxide and water vapor at 298 K and 1 atm of pressure, given the following reaction equation:CH4(g) + 2O2(g) → CO2(g) + 2H2O(g)The standard enthalpies of formation for CH4(g), CO2(g), and H2O(g) are -74.8 kJ/mol, -393.5 kJ/mol, and -241.8 kJ/mol, respectively.

asked 2 days ago in Chemical thermodynamics

1 answer 68 views

What is the concentration (in mol/L) of an HCl solution if 25.00 mL of this solution is required to neutralize 0.015 moles of NaOH in a titration?

asked 6 days ago in Analytical Chemistry

1 answer 44 views

Calculate the enthalpy of vaporization of water at a temperature of 100 degrees Celsius and a pressure of 1 atm, given that the boiling point of water is 100 degrees Celsius and its enthalpy of vaporization at standard conditions (100 degrees Celsius and 1 atm) is 40.7 kJ/mol.

asked Jan 23 in ThermoChemistry

1 answer 44 views

According to Maslow's hierarchy of needs, what is the meaning of self-actualisation?

answered Jan 20 in Psychology

1 answer 25 views

What is the name of the experiment in which participants were asked to administer electric shocks to a supposed fellow participant?

answered Jan 20 in Psychology

1 answer 5 views

When does hypothesis testing occur in psychology research?

answered Jan 17 in Psychology

1 answer 19 views

What principles does equity theory use?

answered Jan 15 in Psychology

1 answer 48 views

Which muscular organ pumps blood all around your body?

answered Jan 8 in Science

1 answer 23 views

What is the most common type of organic compound?

answered Jan 7 in Science

1 answer 22 views

What do you call the fast-moving air currents high in the troposphere?

asked Jan 6 in Science

1 answer 26 views

What are generally divided into prosimian and non-prosimian?

asked Jan 3 in Science

1 answer 28 views

If an electric current passes through water, water molecules break down into molecules of what?

answered Dec 30, 2024 in Science

1 answer 20 views

Channel proteins and carrier proteins help substances diffuse across what?

asked Dec 30, 2024 in Science

1 answer 16 views

An excessive posterior curvature of the thoracic region is also known as what?

asked Dec 30, 2024 in Science

1 answer 7 views

When matter changes into an entirely different substance with different chemical properties, what has occurred?

answered Dec 28, 2024 in Science

1 answer 8 views

In the freshwater flatworms, protonephridia serve chiefly in what?

asked Dec 27, 2024 in Science

1 answer 38 views

Lymph vessels, like veins, have what objects that prevent the backflow of fluid?

answered Dec 27, 2024 in Science

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