Questions by RacheleChewi

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1 answer 37 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

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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

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1 answer 43 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

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1 answer 22 views

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

asked Jan 6 in Science

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1 answer 26 views

What are generally divided into prosimian and non-prosimian?

asked Jan 3 in Science

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1 answer 20 views

Channel proteins and carrier proteins help substances diffuse across what?

asked Dec 30, 2024 in Science

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1 answer 16 views

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

asked Dec 30, 2024 in Science

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1 answer 8 views

In the freshwater flatworms, protonephridia serve chiefly in what?

asked Dec 27, 2024 in Science

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