Recent activity by ACRBianca429

1 answer 63 views

How can X-ray diffraction be used to analyze the crystal structure of a sample and determine its chemical composition?

asked 6 days ago in Analytical Chemistry

1 answer 52 views

Calculate the change in enthalpy (ΔH) for the combustion of methane gas (CH4) at 25°C and constant pressure of 1 atm. The equation for the combustion of methane is:CH4 (g) + 2O2 (g) → CO2 (g) + 2H2O (l) Given the standard enthalpies of formation at 25°C are:ΔHf[CH4 (g)] = -74.87 kJ/mol ΔHf[CO2 (g)] = -393.5 kJ/mol ΔHf[H2O (l)] = -285.8 kJ/mol Assume that water is in its liquid phase at the end of the reaction.

asked Jan 23 in Physical Chemistry

1 answer 33 views

According to Sternberg's triangular theory of love, what are the three dimensions of love?

asked Jan 20 in Psychology

1 answer 20 views

Why is positive psychology relevant to education?

answered Jan 20 in Psychology

1 answer 27 views

How can realistic conflict theory be used for social change?

asked Jan 17 in Psychology

1 answer 7 views

Please compare the concept of the 'identity crisis' used by Erik Erikson versus the 'storm and stress' model of adolescence proposed by G. Stanley Hall.

answered Jan 17 in Psychology

1 answer 22 views

According to the biological model, what is the cause of schizophrenia?

asked Jan 16 in Psychology

1 answer 19 views

Why do we experience optical illusions?

asked Jan 15 in Psychology

1 answer 22 views

What is imprinting?

answered Jan 14 in Psychology

1 answer 33 views

What is the 'social influence' theory?

asked Jan 14 in Psychology

1 answer 42 views

Why do hummingbirds have long narrow bills?

asked Jan 8 in Science

1 answer 18 views

Which kind of vertebrates are amphibians?

answered Jan 8 in Science

1 answer 24 views

What type of isotopes have short half-lives and are given in very low doses?

asked Jan 8 in Science

1 answer 9 views

What occurs when the immune system attacks a harmless substance that enters the body from the outside?

answered Jan 7 in Science

1 answer 28 views

What kind of proteins either activate or deactivate the transcription of other genes?

answered Jan 7 in Science

1 answer 29 views

What is the name of the tube that joins the mouth to the digestive and respiratory tracts?

answered Jan 7 in Science

1 answer 8 views

What is a random change in an organism's genes?

answered Jan 6 in Science

1 answer 41 views

What element is typically used to shield things from gamma rays?

asked Jan 6 in Science

1 answer 24 views

What does the urea cycle process?

answered Jan 6 in Science

1 answer 9 views

The change in the characteristics of living things over time is known as _________

asked Dec 31, 2024 in Science

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