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While in Europe, if you drive 113Km per day, how much money would you spend on gas in one week if gas costs 1.10euros per liter and your car's gas mileage is 39.0mi/gal ? Assume that 1euro=$1.26 dollars.
Elemental analysis of putrescine (The rotten smell of a decaying animal carcass is partially due to a nitrogen-contained compounded) showed
How many liters of O2 are needed to react completely with 45.0L of H2S at STP? 2H2S(g) + 3O2(g) -> 2SO2(g) +2H20(g)
A 56.0 mL solution of phosphoric acid is neutralized by 136.0 mL of 2.6 M NaOH. What is the concentration of the acid?
The second virial coefficient of methane can be approximated by the empirical equation , where a = -0.1993 bar-1, b = 0.2002 bar-1, and c = 1131 K2 with 300 K
The density of tungsten is 19.35 g/cm3. A sample of tungsten is placed in a graduated cylinder containing 30.0 mL of water and the water level rises to 34.0 mL. What is the mass in grams of the sample of tungsten?
Draw all products of the reactions of 4-Chloro-2-methylpentane with NaCN and AgCN. Identify the reaction mechanisms and draw resonance structures
A gas mixture composed of helium and argon has a density of 0.605g/L at a 741mmHg and 298K .What is the composition of the mixture by volume?
Calculating standard enthalpy change, heat, and mass of a reaction, Methanol (CH3OH) is used as fuel in race cars. Calculate the standard enthalpy change for the reaction, assuming H2O(g) as a product.
a gas mixture being used to stimulate the atmosphere of another planet consists of 323 mg of methane, 165 mg of argon, and 223 mg of nitrogen. The partial pressure of nitrogen at 275 k is 19 kPa.
finds that about 10% of the aspiring is converted to salicyclic acid and acetic acid, How many moles of aspirin are in the initial solution? what is the molarity of aspirin? MM=180g what is the rate of reaction?
When a magnetic sector instrument was operated with an accelerating voltage of 2500 V, a magnetic field of 0.4 Tesla was required to focus on the CH4+ on the detector.
What is the significance of high pressure used in HPLC?
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