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Compute the increase in entropy when 3.50 moles of an ideal gas is heated from 250 K to 700 K and simultaneously expanded from 20 L to 60 L. The Cv,m of the gas is 5/2 R.?
Consider a nitrite (NO2-) analysis for rainwater samples. Gas chromatographic (GC) vs. spectrophometric approaches were compared with the following results as means?
A 4.000-g sample of the metal nitrate M(NO3)2 was dissolved in water and treated with excess aqueous sodium sulfate. The sulfate salt that formed weighed 3.318 g. Determine the identity of the metal.
It takes 55.0 J to raise the temperature of an 8.80 g piece of unknown metal from 13.0C to 25.0C. What is the specific heat for the metal? Express your answer numerically, in J/g. C
Which best describes a solid?
Each polypeptide in the alpha keratin dimer has 3.5 residues per turn, resulting in the slight winding, or twist, around the other polypeptide
A solution has a volume of 2.0 L and contains 36.0 g of glucose (C6H12O6). If the molar mass of glucose is 180 g/mol, what is the molarity of the solution.
Calculate the concentration (molarity) of iron in a dilutedsolution if 5.00 mL of 5.0x10^-4 M Fe(NH4)2(SO4)2 6H2O isdiluted with water to 100.0 mL.
A three-step industrial process involves both heat and work. Calculate the overall change in energy DE for the entire process, given these three individual steps.
Ammonium hydrogen sulfide decomposes on heating NH4HS(s) NH3(g) + H2S(g) If Kp for this reaction is 0.11 at 298 kelvins (with pressures in atmospheres)
Acrylonitrile, C3H3N (53.07 g/mol), is used in the synthesis of a variety of plastics. What mass of acrylonitrile can be produced from a mixtur.
Calculate the volume (in liters) occupied by 2.08 moles of nitric oxide (NO) at 5.84 atm and 76°C.
How many mL of 0.220 M of NaOH are needed to completely hydrolyze 2.40 grams of propyl acetate.
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