Questions by ElkeMary0923

0 votes

1 answer 70 views

What is the reactivity order of the following group 1 metal ions: Li+, Na+, K+, and Cs+ based on their electronic configuration?

asked Feb 24 in Inorganic Chemistry

0 votes

1 answer 130 views

How do the electronic and optical properties of graphene differ from those of other 2D materials such as MoS2, and what factors contribute to these differences?

asked Feb 13 in Quantum Chemistry

0 votes

1 answer 121 views

What is the percentage purity of a given sample of aspirin when the melting point is determined to be 135°C? The literature melting point range for pure aspirin is 135-136°C.

asked Feb 12 in Analytical Chemistry

0 votes

1 answer 137 views

How can the sensitivity and selectivity of polymer-based gas sensors be enhanced?

asked Feb 10 in Polymer Chemistry

0 votes

1 answer 160 views

Determine the oxidation state of all elements in the following compound: CoCl<sub>2</sub>•6H<sub>2</sub>O.

asked Feb 4 in Inorganic Chemistry

0 votes

1 answer 135 views

Calculate the standard enthalpy change for the phase transition reaction of solid iodine to iodine vapor using the following information:- Standard enthalpy of fusion of solid iodine = 15.52 kJ/mol- Standard enthalpy of vaporization of iodine = 41.57 kJ/mol- Heat capacity of solid iodine = 54.44 J/mol*K- Heat capacity of iodine vapor = 27.32 J/mol*K- Melting point of iodine = 386.85 K- Boiling point of iodine = 457.4 K

asked Feb 3 in Chemical thermodynamics

0 votes

1 answer 128 views

How can the chemical engineering principles be applied to develop a cost-effective and efficient process for the production of a specific pharmaceutical drug, while ensuring the product's purity, potency and stability?

asked Jan 31 in Chemical engineering

0 votes

1 answer 96 views

How can the composition of a sample be determined using X-ray diffraction analysis and what specific information can be obtained from the analysis?

asked Jan 29 in Analytical Chemistry

0 votes

1 answer 86 views

Assuming a chemical equilibrium reaction aA + bB ⇌ cC + dD, with initial concentrations of [A] = 0.2 M, [B] = 0.3 M, [C] = 0 M, and [D] = 0 M at 25°C, what will be the new equilibrium concentration of [B] if the volume of the container is decreased to half the original volume?

asked Jan 22 in Chemical equilibrium

0 votes

1 answer 53 views

When diagnosing ADHD, what are the common symptoms?

asked Jan 17 in Psychology

0 votes

1 answer 125 views

What is the main criticism of the social cognitive perspective in psychology?

asked Jan 16 in Psychology

0 votes

1 answer 56 views

Who proposes that the grief process is influenced by societal expectations?

asked Jan 15 in Psychology

0 votes

1 answer 45 views

What is the relationship between adolescent development and substance use?

asked Jan 14 in Psychology

0 votes

1 answer 55 views

Who is known for their work on positive psychology?

asked Jan 13 in Psychology

0 votes

1 answer 144 views

What is the difference between the naturalistic observation and controlled observation research methods?

asked Jan 13 in Psychology

0 votes

1 answer 98 views

When leaves wilt, what plant process ceases?

asked Jan 8 in Science

0 votes

1 answer 57 views

What type of shots do people with allergy get?

asked Jan 8 in Science

0 votes

1 answer 66 views

What processes allow for the greatest range of rotation within the vertebral column and facilitate the movement of the head?

asked Jan 7 in Science

0 votes

1 answer 125 views

What kind of muscle cells undergo twitch-type contractions with long refractory periods followed by brief relaxation periods, allowing the heart to fill with blood for the next cycle?

asked Jan 7 in Science

0 votes

1 answer 62 views

What is the term for a structure within the cytoplasm that performs a specific job in the cell?

asked Jan 7 in Science

Categories