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What is the thickness of a monolayer of gas adsorbed on the surface of a solid using the BET theory if the specific surface area of the solid is 100 m²/g and the volume of gas adsorbed at standard pressure is 10 mL/g?

asked Mar 1 in Surface Chemistry by TheScientist (138k points)

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What is the standard enthalpy change for the following reaction, where 2 moles of solid iron (Fe) reacts with 1 mole of oxygen gas (O2) to produce 2 moles of solid iron (III) oxide (Fe2O3)? 4Fe(s) + 3O2(g) -> 2Fe2O3(s)

asked Mar 1 in Chemical thermodynamics by TheScientist (138k points)

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What is the formal charge of the sulfur atom in the compound SO₂?

asked Mar 1 in Chemical bonding by TheScientist (138k points)

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Sure! During a chemical reaction, one of the reactants is completely consumed, producing 10 grams of product. If the theoretical yield of the product was 12 grams and the actual yield was 10 grams, what is the percent yield of the reaction?

asked Mar 1 in Chemical reactions by TheScientist (138k points)

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What is the percent yield of carbon dioxide if 25 grams of magnesium carbonate react with excess hydrochloric acid, and 7.5 grams of carbon dioxide are produced? The theoretical yield of carbon dioxide for this reaction is 10 grams.

asked Mar 1 in Chemical reactions by TheScientist (138k points)

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What methods can be used to investigate the mechanical properties of biomaterials for use in tissue engineering, and how do these methods inform the design of these materials for optimal tissue regeneration?

asked Mar 1 in Materials Chemistry by TheScientist (138k points)

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Suppose you are given 500 mL of 0.1 M acetic acid and 0.1 M sodium acetate buffer solution. You add 2 mL of 1 M hydrochloric acid to the buffer solution. Calculate the new pH of the solution and explain how the buffer system resists changes in pH.

asked Mar 1 in Chemical equilibrium by TheScientist (138k points)

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What is the formal charge of sulfur in the sulfate ion (SO4)^(2-) ? Show your calculations.

asked Mar 1 in Inorganic Chemistry by TheScientist (138k points)

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What is the molecular orbital diagram and electronic configuration for the H2 molecule using the LCAO-MO (Linear Combination of Atomic Orbitals-Molecular Orbital) method?

asked Mar 1 in Quantum Chemistry by TheScientist (138k points)

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What would be the theoretical yield of 2,4-dinitrophenol if 10 grams of phenol was used in the preparation and 85% yield was obtained?

asked Mar 1 in Chemical synthesis by TheScientist (138k points)

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What is the exchange current density (in A/cm2) for the reaction 2H+ + 2e- ⇌ H2 at a temperature of 298 K and a concentration of 0.1 M H+? Given that the standard potential of the half-cell reaction is 0 V, and the Tafel slope is 60 mV/decade.

asked Mar 1 in ElectroChemistry by TheScientist (138k points)

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What is the mass of 2,4-dinitrophenol that can be obtained from 5 grams of phenol and excess nitric acid using the preparation method to synthesize 2,4-dinitrophenol?

asked Mar 1 in Chemical synthesis by TheScientist (138k points)

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How can we use the principles of medicinal chemistry to design a drug that specifically targets and inhibits the replication of the influenza virus?

asked Mar 1 in Medicinal Chemistry by TheScientist (138k points)

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What is the pH of a 0.1 M solution of hydrochloric acid (HCl)?

asked Mar 1 in Inorganic Chemistry by TheScientist (138k points)

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What are the key components and their required amounts needed to design a cost-effective and high-performance system for the production of water-based interior wall paints with low VOC emissions?

asked Mar 1 in Chemical engineering by TheScientist (138k points)

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How can we design a cost-effective and efficient system for the production of a specific cosmetic while taking into consideration the safety of the product and its impact on the environment?

asked Mar 1 in Chemical engineering by TheScientist (138k points)

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What is the pH of a 0.01 M solution of hydrochloric acid at 25°C, as determined using a pH meter with a precision of ± 0.02 pH units?

asked Mar 1 in Analytical Chemistry by TheScientist (138k points)

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What is the percent yield of p-nitroaniline obtained when 10g of aniline is reacted with excess nitric acid to produce p-nitroaniline and 8g of the product is obtained after purification?

asked Mar 1 in Chemical synthesis by TheScientist (138k points)

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What is the standard cell potential for a galvanic cell made up of a silver electrode and a zinc electrode, where the concentration of silver ions is 0.01 M and the concentration of zinc ions is 1.0 M?

asked Mar 1 in Physical Chemistry by TheScientist (138k points)

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How can we design a system using chemical principles to efficiently recover valuable metals such as gold, silver, and platinum from electronic waste without causing harm to the environment?

asked Mar 1 in Chemical engineering by TheScientist (138k points)

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