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A sample of 5.0mol CO2(g) is originally confined in 15dm^3 at 280 K and undergoes adiabatic expansion against a constant pressure of 78.5 kPa until the volume has increased by a factor of 3.0.Calculate q,w,delta T,delta U,and delta H.(The final pressure of the gas is not necessarily 78.5kPa.)
Draw the product of the reaction between 1-butyne and NaNH2 in NH3, then D3O+. To add a deuterium atom, first explicitly add an H.
how many milliliters of 0.42 M solution of acetic acid, CH3COOH, will contain 0.50 grams of acetic acid
Calculate the amount of heat (in kJ) required to raise the temperature of 242 grams of water from 24 degree C to 65 degree C.
The kidneys function to eliminate ammonia from the blood. Based on the pK value, what is the molecular form that predominates in the blood? Could this molecule easily diffuse through th ehydrophobic lipid membrane of a kidney cell? Explain.
The Henry's Law constant for CH3Br gas in water at 25 oC is 0.159 mol/L-atm. Calculate the solubility of CH3Br in water at 25 oC in moles/L if the partial pressure of CH3Br in the headspace above a water sample is 1.71 atm.
Aqueous sulfuric acid will react with solid sodium hydroxide to produce aqueous sodium hydrogen sulfate and liquid water . Suppose 3.92 g of sulfuric acid is mixed with 2.22 g of sodium hydroxide.
use oxidation number to show which element is oxidized and which element is reduced in this equation 2H2o2----2H2O+O2
Make the best match for each efficiency advantage to one mechanism for organizing enzymes in metabolic pathways. A. soluble enzymes in a lipid-enclosed volume
What is the [H3O+] and the pH of a buffer that consists of 0.21 M HNO2 and 0.57 M KNO2? (Ka of HNO2 = 7.1*10^-4) Define What is the component concentraion ratio
If a mixture of 35.8 g of CH4 and 75.5 g of S reacts, how many grams of H2S are produced? CH4(g)+4S(g)-->CS2(g)+2H2S(g).
when 8.00g of NaOH is added to a calorimeter filled with 75.0mL of HCl the temperature of the solution increases for 25.0 C to 33.5 C. calculate the molar heat of neutralization for the NaOH. (assume that the density of the solution is 1.00gmL)
How much heat energy is required to raise the temperature of 0.368 of copper from 23.0 to 60.0 ? The specific heat of copper is 0.0920 .
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