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Explain a solution of 2.00g of para-dichlorobenzene (a clothes moth repellant) in 50.0g of cyclohexane freezes at 1.05°C. Explain what is the molar mass of this substance?
Iron has a density of 7.874. g/cm3. What is the mass of a rectangular block of iron with dimensions of 3.000 cm by 4.000 cm by 5.000 cm?
Sodium carbonate (\rm Na_2CO_3) is used to neutralize the sulfuric acid spill. How many kilograms of sodium carbonate must be added to neutralize 3.02×103 kg of sulfuric acid solution
The partial pressure and Henry's law constants for SO2 and H2O2 are 2.7 ppm (KH = 1.2 mol L-1atm-1) and 4.9 ppb (KH = 1.0E5 mol L-1atm-1), respectively. Calculate the reaction rate of this process.
a solution of 5.0g benzoic acid c6h5cooh in 100.0g of carbon tetrachloride has a boiling point of 77.5c. the boiling
A 4.1089 g piece of aluminum wire with a circular cross section is 42.06 cm long and has a density of 2.6989 g/cm3 what is the volume of the wire in cm3
in a certain experiment 28.01 ml of .2500 m nitric acid and53.0 ml of 0.3204 m potassium hydroxide are mixed.a
The Orsat analysis of the flue-gas gives 13.9% CO2, 0.8% CO, 4.3% O2, and 81.0% N2. Calculate the percent of excess air based on complete combustion of the coke.
Pyridine(C5H5N) is a weaker base in H2O than 2,6 lutidine (dimethylpyridine), but we observe that the pyridine-BF3 complex is more stable than the comparable lutidine-BF3. Explain the reason for this inversion in stabilities.
How many grams of sulfur (S) are needed to react completely with 326 g of mercury (Hg) to form HgS?
Give the percent yield when 28.16 g of CO2 are formed from the reaction of 4.000 moles of C8H18 with 4.000 moles of O2. 2 C8H18 + 25 O2 ? 16 CO2 + 18 H2O
How would you prepare 250mL of a buffer having a pH of 3.60 using 0.500M NaOH and 0.500M of HNO2. Would you calculate the molarities of the conjugate acid and base pair and then somehow get the volumes from that
A 20.00 liter container holds 5.00 g of helium ( He, AW = 4.0g/mol ), 5.00 g of nitrogen ( N, AW = 14.0g/mol ) and 5.00 g of argon ( Ar, AW = 39.9 g/mol ) at 25 C. What is the partial pressure of each gas and total pressure of the mixture of gaase..
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