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Given that the enthalpy of vaporization of water is 40.7 kJ/mol at its boiling point of 100°C, calculate the amount of energy required to boil 500g of water starting from 25°C.

asked 1 day ago in ThermoChemistry by IslaWoodward (530 points)

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Determine the entropy change for the combustion of methane gas (CH4) at constant pressure and 298 K. Given the standard molar entropy values are: S°(CH4) = 186 J/mol.K, S°(O2) = 205 J/mol.K, S°(CO2) = 214 J/mol.K and S°(H2O) = 188 J/mol.K.

asked 1 day ago in Chemical thermodynamics by BobbyeY74750 (410 points)

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Here's a precise problem for a chemistry student to solve, based on Thermochemistry and the Enthalpy of Desorption Calculations:Given the following data for the adsorption of hydrogen gas on a metal surface:- Initial pressure of hydrogen gas = 1 atm- Final pressure of hydrogen gas after adsorption = 0.2 atm- Temperature = 298 K- Surface area of the metal = 5 cm^2- Enthalpy of Desorption of hydrogen gas on the metal surface = -40 kJ/molCalculate the enthalpy change (in kJ) for the adsorption of hydrogen gas on the metal surface.

asked 1 day ago in ThermoChemistry by HattieSteven (310 points)

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How can chemistry teachers incorporate more practical applications of the subject into their lessons to enhance students' understanding and interest in the subject?

asked 1 day ago in Chemical education by CarinLively (310 points)

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How can chemistry students overcome the limited availability of chemistry-related internships and job opportunities to gain more practical experience in the field?

asked 1 day ago in Chemical education by MichelleHoli (490 points)

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Find the oxidation state of chromium in the compound K2Cr2O7.

asked 1 day ago in Chemical reactions by EwanSales325 (330 points)

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How can metabolomics and systems biology be used to identify metabolic pathways involved in drug metabolism and toxicity in the human body?

asked 16 hours ago in BioChemistry by TheScientist (17.4k points)

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How can metabolomics and systems biology be used to determine the effect of a specific drug on the metabolic pathways of a cell?

asked 16 hours ago in BioChemistry by TheScientist (17.4k points)

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How can computational studies be used to optimize the performance of metal-organic frameworks in gas storage and separation applications?

asked 23 hours ago in Computational Chemistry by FlorineMmj33 (610 points)

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How can molecular docking studies be used to design new drugs for a specific protein target?

asked 16 hours ago in Computational Chemistry by TheScientist (17.4k points)

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Here is a chemistry problem related to renewable energy sources and their impact on the environment:What is the net energy yield and the carbon footprint of producing ethanol fuel from corn stover waste (a byproduct of corn cultivation) using a biochemical conversion process, and how does it compare to producing gasoline from crude oil in terms of environmental impact?

asked 1 day ago in Environmental Chemistry by DCQVenetta9 (390 points)

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Explain how the glass transition temperature of a polymer is influenced by its molecular weight and degree of branching.

asked 1 day ago in Physical Chemistry by DenishaVilla (230 points)

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Determine the oxidation state of all elements in the following compound: CoCl<sub>2</sub>•6H<sub>2</sub>O.

asked 1 day ago in Inorganic Chemistry by RafaelaHuonD (450 points)

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How can chemistry teachers better support students with learning disabilities in the classroom, to ensure that they have equal opportunities to learn and succeed in the subject?

asked 1 day ago in Chemical education by BTUDanielle4 (510 points)

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1 answer 37 views

How can chemistry students from low-income communities access high-quality resources and textbooks to enhance their understanding and mastery of the subject?

asked 1 day ago in Chemical education by KathaleenJts (550 points)

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1 answer 6 views

How can medicinal chemists design drugs to specifically target the lifecycle of the Zika virus while minimizing the risk of harming healthy cells?

asked 16 hours ago in Medicinal Chemistry by TheScientist (17.4k points)

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1 answer 43 views

Here's a precise problem for the student to solve: Calculate the standard enthalpy change for the neutralization of 50 mL of 0.10 M hydrochloric acid (HCl) with 50 mL of 0.10 M sodium hydroxide (NaOH) at 25°C, given that the specific heat capacity of the solution is 4.18 J/(g °C) and the density of the solution is 1.00 g/mL.

asked 1 day ago in Chemical thermodynamics by SybilDodd555 (430 points)

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1 answer 7 views

How can environmental chemistry concepts be integrated into high school chemistry curriculums to increase student awareness and understanding of the impact of chemistry on the environment?

asked 17 hours ago in Chemical education by TheScientist (17.4k points)

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Here is a problem related to Hess's Law for the student to solve:Suppose you are given the following three equations, each with their respective enthalpy change: (1) 2H2(g) + O2(g) --> 2H2O(l) ΔH₁ = -572 kJ/mol (2) 2H2O(l) --> 2H2(g) + O2(g) ΔH₂ = 472 kJ/mol (3) C(s) + O2(g) --> CO2(g) ΔH₃ = -394 kJ/molUse Hess's law to calculate the enthalpy change (in kJ/mol) for the following reaction: C(s) + 2H2(g) --> CH4(g)

asked 1 day ago in Chemical reactions by SamiraY20394 (430 points)

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1 answer 42 views

How can a better understanding of the role of chemistry in society and the economy be integrated into the chemistry curriculum to better prepare students for the workforce and contribute to the advancement of society?

asked 1 day ago in Chemical education by TabithaMonds (230 points)

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