Recent activity by RandallHunsi

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Calculate the standard enthalpy change for the precipitation reaction that occurs when 100 mL of 0.2 M lead nitrate solution reacts with 100 mL of 0.1 M sodium iodide solution to form solid lead iodide and aqueous sodium nitrate. The balanced chemical equation for the reaction is:Pb(NO3)2(aq) + 2 NaI(aq) → PbI2(s) + 2 NaNO3(aq)Given: - Molar mass of Pb(NO3)2 = 331.20 g/mol - Molar mass of NaI = 149.89 g/mol - Density of 0.2 M lead nitrate solution = 1.055 g/mL - Density of 0.1 M sodium iodide solution = 1.04 g/mL - Specific heat capacity of the reaction mixture is 4.18 J/(g · °C) - The initial temperature of the reaction mixture and the surroundings is 25 °C.

asked Feb 3 in Chemical thermodynamics

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What is the mechanism of action of avobenzone, a widely used ingredient in sunscreen products, under UV radiation? Investigate the photochemical properties of the compound and highlight the factors that make it an efficient UV absorber.

answered Jan 31 in PhotoChemistry

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What is repression in psychoanalytic theory?

answered Jan 20 in Psychology

1 answer 31 views

What is an intention-to-treat analysis?

asked Jan 16 in Psychology

1 answer 11 views

The processes of homeostasis and temperature control are centered in the hypothalamus of the advanced animal brain, thus thermoregulation depends on what organ system?

asked Jan 2 in Science

1 answer 64 views

Respiratory distress syndrome results from insufficient production of what?

answered Dec 31, 2024 in Science

1 answer 57 views

What is the distance something travels in a given amount of time called?

answered Dec 28, 2024 in Science

1 answer 31 views

What branch of science is defined as the study of matter?

answered Dec 27, 2024 in Science

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