Two Solutions, Initially at 24

question 85

Multiple Choice

Two solutions, initially at 24.69 °C, are mixed in a coffee cup calorimeter (C_cal = 105.5 J °C^-1) . When a 200.0 mL volume of 0.100 mol L^-1 AgNO₃ solution is mixed with a 100.0 mL sample of 0.100 mol L^-1 NaCl solution, the temperature in the calorimeter rises to 25.16 °C. Determine the H°, in units of kJ . Assume that the density and heat capacity of the solutions is the same as that of water. Hint: Write a balanced reaction for the process.

• A) -32 kJ mol^-1
• B) -78 kJ mol^-1
• C) -64 kJ mol^-1
• D) -25 kJ mol^-1
• E) -52 kJ mol^-1

Understand the role of source amnesia in memory inaccuracies and its implications.

Recognize the influence of misinformation on memory formation and recall.

Understand the susceptibility of children to memory distortions compared to adults.

Appreciate the importance of effective memory strategies, such as retrieval cues and mnemonic devices.

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Definitions:

Plant Species

A category that classifies a group of plants which are similar and capable of interbreeding.

Biodiversity

The variety and variability of life on Earth, including diversity within species, between species, and of ecosystems.

Excessive Ultraviolet Radiation

Overexposure to UV rays from the sun or artificial sources, which can lead to skin damage and increased risk of skin cancer.

Ultraviolet Radiation

A form of energy emitted by the sun, invisible to the naked eye, which can have harmful effects on human skin and eyes but is essential for the synthesis of vitamin D.