Recent activity by MariSchumach

1 answer 45 views

How does changing the pH affect the equilibrium position of the redox reaction: Fe2+ + 2H+ ⇌ Fe3+ + H2O?

answered Feb 3 in Chemical equilibrium

1 answer 59 views

Identify the structural isomers for the organic compound C4H10O and explain how they differ in their physical and chemical properties.

answered Jan 31 in Organic Chemistry

1 answer 53 views

How can the concentration of lead in a water sample be determined using atomic absorption spectroscopy and what factors may affect the accuracy of the measurement?

asked Jan 29 in Analytical Chemistry

1 answer 45 views

Calculate the heat of mixing (in kJ/mol) when 100 mL of 0.2 M HCl is added to 200 mL of 0.1 M NaOH at 25°C. Assume the density of the resulting solution is 1 g/mL and specific heat capacity is 4.18 J/(g*K). Also, assume the heat capacity of the solution is the same as water.

answered Jan 23 in ThermoChemistry

1 answer 43 views

A student needs to calculate the standard potential of a electrochemical cell formed by a zinc electrode and a silver electrode. The concentration of Zn2+ ions in the zinc half-cell is 1.0 M and the concentration of Ag+ ions in the silver half-cell is 0.1 M. The measured potential of the cell is 1.95 V. What is the standard potential of the cell?

answered Jan 22 in Physical Chemistry

1 answer 34 views

Why is the concept of boundaries important in therapy?

answered Jan 20 in Psychology

1 answer 21 views

What is the impact of conflicting attitudes on dissonance?

asked Jan 16 in Psychology

1 answer 9 views

How does the concept of the social brain relate to evolutionary psychology?

answered Jan 15 in Psychology

1 answer 8 views

Who is considered as the father of trait theory?

asked Jan 14 in Psychology

1 answer 31 views

What is the structure which hangs from a newly hatched salmon larva?

asked Jan 7 in Science

1 answer 45 views

What is the name of the process that refers to the balance or equilibrium within the cell or a body?

answered Jan 7 in Science

1 answer 10 views

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

answered Jan 6 in Science

1 answer 29 views

Quantum mechanics involves the study of material at what level?

asked Dec 31, 2024 in Science

1 answer 11 views

Large viruses began as what type of cells inside bigger host cells?

answered Dec 31, 2024 in Science

1 answer 23 views

In chemical reactions, what substances can act like metals or nonmetals, depending on their number of electrons?

asked Dec 31, 2024 in Science

1 answer 13 views

Acids can also react with metals, and when they do they produce what?

asked Dec 30, 2024 in Science

1 answer 22 views

A decline in blood flow to what organs stimulates release of the enzyme renin, in turn stimulating the reabsorption of sodium and water?

answered Dec 30, 2024 in Science

1 answer 28 views

What is a substance that increases the hydrogen ion concentration of a solution?

asked Dec 27, 2024 in Science

1 answer 25 views

What links the trophic levels from producers to top carnivores?

answered Dec 27, 2024 in Science

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