Questions by JessieStraub

0 votes

1 answer 33 views

Calculate the standard enthalpy of formation of propane (C3H8) given the following data:- Standard enthalpy of formation of CO2(g) = -393.5 kJ/mol- Standard enthalpy of formation of H2O(l) = -285.8 kJ/mol- Standard enthalpy of combustion of propane at constant pressure = -2220.1 kJ/mol

asked 2 days ago in Chemical thermodynamics

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1 answer 71 views

A chemistry student needs to determine the concentration of NaOH in a 250 mL solution. They know that 10 mL of the solution was titrated with 0.1 M HCl solution, which required 8.5 mL of the HCl solution to be fully neutralized. Based on this information, what is the concentration of NaOH in the solution?

asked Jan 22 in Analytical Chemistry

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1 answer 48 views

A chemistry student needs to analyze a sample of a mixture that consists of anionic and cationic species. Using capillary electrophoresis, determine the presence and concentration of each species in the sample. Additionally, suggest a suitable buffer system and optimize the electrophoresis conditions for efficient separation and detection of the species.

asked Jan 22 in Analytical Chemistry

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1 answer 18 views

What is the role of psychology in shaping public policy?

asked Jan 20 in Psychology

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1 answer 31 views

What is joint attention?

asked Jan 15 in Psychology

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1 answer 15 views

What is divergent thinking?

asked Jan 13 in Psychology

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1 answer 44 views

What is self-perception theory?

asked Jan 13 in Psychology

0 votes

1 answer 6 views

Which system in the body exchanges gases with the outside air?

asked Jan 8 in Science

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1 answer 26 views

What is the term for the stalk connecting a leaf to a stem?

asked Jan 7 in Science

0 votes

1 answer 45 views

Developing cars that run on hydrogen gas can help solve our dependence on what?

asked Dec 30, 2024 in Science

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