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Absorbance vs Transmittance – Level 1 Convert Abs of 0.24 to % Transmittance.

Hess’s Law – Level 2 You are performing a reaction in a coffee cup calorimeter. You add a 1.00 g piece of magnesium metal (Mg) to 100.0 mL of 1.00 M hydrochloric acid (HCl). The reaction that occurs is:Mg(s) + 2HCl(aq) → MgCl₂(aq) + H₂(g)During the reaction, the temperature of the solution increases from 25.0°C to 32.5°C. Assume the specific heat capacity of the solution is the same as water, 4.18 J/g°C, and the density of the solution is 1.00 g/mL.Calculate the enthalpy change of the reaction (ΔH) using Hess’s Law.

Dye Absorbance and Transition Energy – Level 2 Four different dyes each absorb light at a different maximum wavelength (λmax):   Dye λₘₐₓ (nm) A 350 nm B 425 nm C 510 nm D 615 nm Which of these dyes absorbs photons with the the highest energy?

VESPR – Level 2 – Isomers How many isomers are possible for the following molecular formula given the following constraint: Molecular Formula: C3H8O You may only use single bonds. Only use constitutional isomers, do not consider chirality. No atoms may have a charge.

Hess’s Law – Line Addition – Level 3 Use the following thermochemical equations to determine the enthalpy change (ΔH) for the target reaction: C(graphite)+2H2 (g)→CH4 (g) Given reactions: C(graphite) + O2 (g)→CO2 (g) ΔH1=-393.5 kJ2H2 (g) + O2 (g)→2H2 O(l)  ΔH2=-571.6 kJCH4 (g) + 2O2 (g)→CO2 (g) + 2H2O(l) ΔH3=-890.3 kJ  Question:      Using Hess’s Law, what is ΔH° for C(graphite)+2H2 (g)→CH4 (g)?

What are the three main processes of memory? Discuss how memory can be both reliable and fallible, providing examples of false memories or memory distortion.

Compare two approaches to treating mental illness (e.g., cognitive-behavioral therapy vs. medication). What are the advantages and disadvantages of each?

Compare and contrast classical conditioning and operant conditioning. Include real-life examples to show how each form of learning occurs.

Explain Jean Piaget’s stages of cognitive development. How might understanding these stages influence approaches to education or parenting?

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