Recent activity by GQABrian353

1 answer 23 views

Given the equilibrium reaction: 2NOCl(g) ⇌ 2NO(g) + Cl2(g), if the equilibrium constant (Kc) at 25°C is 2.45 x 10^-3, what will be the new value of Kc if the temperature is increased to 50°C?

asked 1 day ago in Chemical equilibrium

1 answer 34 views

Calculate the reaction quotient, Qc, for the reaction: 2 NO2 (g) + Cl2 (g) ⇌ 2 NO2Cl (g)At a certain temperature, the concentrations were found to be: [NO2] = 0.15 M, [Cl2] = 0.20 M, and [NO2Cl] = 0.10 M.Is the reaction at equilibrium? If not, which direction would the reaction proceed to reach equilibrium?

asked 2 days ago in Chemical thermodynamics

1 answer 42 views

What is the concentration of iron (Fe) in a sample of river water using spectrophotometric analysis with a known calibration curve and absorbance of 0.25 at a wavelength of 510 nm? The molar absorptivity of Fe at 510 nm is 8.70 x 10^3 M^-1cm^-1 and the path length of the cuvette used is 1.0 cm.

asked 6 days ago in Analytical Chemistry

1 answer 47 views

Calculate the lattice energy of magnesium oxide (MgO) given that the lattice enthalpy of magnesium (Mg) is 3944 kJ/mol and that of oxygen (O) is 751 kJ/mol.

asked Jan 23 in Inorganic Chemistry

1 answer 46 views

According to Piaget's theory, how do children learn?

asked Jan 20 in Psychology

1 answer 14 views

How does the social-ecological model help us understand social erasure?

answered Jan 20 in Psychology

1 answer 33 views

When was the concept of cognitive dissonance introduced?

asked Jan 20 in Psychology

1 answer 33 views

According to social influence theory, what is the difference between conformity and obedience?

asked Jan 17 in Psychology

1 answer 19 views

Why is a one-way ANOVA used?

answered Jan 17 in Psychology

1 answer 20 views

What criticisms have been lodged against groupthink theory?

asked Jan 16 in Psychology

1 answer 57 views

What are some limitations of theory evaluation in mental illness?

answered Jan 15 in Psychology

1 answer 14 views

Where does the concept of gender as a social construct come from?

answered Jan 15 in Psychology

1 answer 19 views

Where did the concept of hypermasculinity originate?

asked Jan 15 in Psychology

1 answer 28 views

What is the investment model of relationships?

answered Jan 15 in Psychology

1 answer 31 views

Where does the Moral Model of Addiction suggest addiction comes from?

answered Jan 15 in Psychology

1 answer 43 views

What is the function of reinforcement in operant conditioning?

answered Jan 15 in Psychology

1 answer 60 views

What is the 'mental model' theory?

asked Jan 14 in Psychology

1 answer 38 views

What protects reptiles from drying out?

answered Jan 7 in Science

1 answer 20 views

What is an example of a metaloid element?

asked Jan 6 in Science

1 answer 47 views

In a controlled scientific study, what do you call a factor that can take on different values?

answered Dec 30, 2024 in Science

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