Questions by ACRBianca429

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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

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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

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1 answer 33 views

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

asked Jan 20 in Psychology

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1 answer 28 views

How can realistic conflict theory be used for social change?

asked Jan 17 in Psychology

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1 answer 22 views

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

asked Jan 16 in Psychology

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1 answer 19 views

Why do we experience optical illusions?

asked Jan 15 in Psychology

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1 answer 33 views

What is the 'social influence' theory?

asked Jan 14 in Psychology

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1 answer 43 views

Why do hummingbirds have long narrow bills?

asked Jan 8 in Science

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1 answer 24 views

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

asked Jan 8 in Science

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1 answer 41 views

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

asked Jan 6 in Science

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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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1 answer 22 views

What occurs when force is applied to a moving object?

asked Dec 28, 2024 in Science

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