Recent activity by Antoinette08

1 answer 31 views

Calculate the standard enthalpy change for the fusion of solid silver (Ag) at its melting point (961.78°C) to liquid silver (Ag) at the same temperature. Given the standard enthalpy of fusion of solid silver is 11.3 kJ/mol.

asked 2 days ago in Chemical thermodynamics

1 answer 67 views

What are the specific properties of ceramics that make them suitable for use in high-temperature applications, and how can these properties be manipulated to improve their performance in extreme environments?

asked 4 days ago in Materials Chemistry

1 answer 72 views

What factors determine the bond strength of a molecule and how can we predict it using chemical bonding principles? Use examples to support your answer.

answered 4 days ago in Chemical bonding

1 answer 39 views

Calculate the energy required to break all the bonds in 1 mole of methane gas (CH4) at standard conditions, given that the bond energies of C-H and C-C bonds are 413 kJ/mol and 348 kJ/mol, respectively. Then, calculate the total energy released or absorbed during the combustion of 1 mole of methane gas with oxygen gas to form carbon dioxide gas and water vapor.

asked Jan 23 in Chemical reactions

1 answer 41 views

Calculate the amount of heat required to break all the bonds in 5 moles of carbon dioxide using the bond energy values for the C=O bond and the O-H bond.

asked Jan 23 in Chemical reactions

1 answer 22 views

What is the influence of spirituality on indigenous psychology?

asked Jan 20 in Psychology

1 answer 23 views

How can positive psychology be applied to therapy?

answered Jan 20 in Psychology

1 answer 18 views

What is the case study method?

asked Jan 13 in Psychology

1 answer 26 views

Within the first 8 weeks of gestation, a developing embryo establishes the rudimentary structures of all of its organs and tissues from the ectoderm, mesoderm, and endoderm. this process is called what?

answered Jan 8 in Science

1 answer 27 views

What organ senses sound?

asked Jan 7 in Science

1 answer 61 views

What kind of surface temperature is found on venus?

asked Jan 7 in Science

1 answer 42 views

What is first year after birth is called?

asked Jan 6 in Science

1 answer 7 views

What form when water vapor condenses in the air around specs of matter?

asked Jan 6 in Science

1 answer 25 views

What does ozone in the stratosphere protect us from?

asked Jan 6 in Science

1 answer 31 views

Fuels according to the law of what, can never actually be “consumed”; it can only be changed from one form to another?

answered Dec 30, 2024 in Science

1 answer 9 views

What form of matter has neither a definite shape nor a definite volume?

answered Dec 28, 2024 in Science

1 answer 25 views

What is the name given to the use of controlled nuclear fusion as an energy source?

asked Dec 27, 2024 in Science

1 answer 11 views

What is it called when large objects are broken down into smaller pieces?

answered Dec 27, 2024 in Science

1 answer 23 views

Insulin is made up of how many polypeptide chains?

asked Dec 27, 2024 in Science

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