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While in Europe, if you drive 105 km per day, how much money would you spend on gas in one week if gas costs 1.10 rm euros per liter and your car's gas mileage is 41.0 mi/gal? Assume that 1; rm euro = 1.26; dollars.
Diamond has a face-centered cubic unit cell, with four more C atoms in tetrahedral holes within the cell. Densities of diamonds vary from 3.01 g/cm3 to 3.52 g/cm3 because C atoms are missing from some holes.
determine the empirical and molecular formulas of a hydrocarbon which has a molecular weight of 84 mass unit which contains 85.7% carbon.
A 100.0 mL sample of 0.10 M NH3 is titrated with 0.10 M HNO3. Determine the pH of the solution after the addition of 200.0 mL of KOH. The Kb of NH3 is 1.8 × 10-5.
The design calls for reheating the liquid after the temperature has dropped to seventy degree Celsius the determine about how many stags and how many heaters are required for this process?
How much energy is released from the complete combustion of 63.0 g of sulfur in this equation:
The heat of solution of ammonium chloride is 15.2 kJ/mol. If a 6.253 g sample of NH4Cl is added to 65.0 mL of water in a calorimeter at 26.9°C.
aluminum may be formed by the passage of 60,714 C through an electrolytic cell that contains a molten aluminum salt.
The density of so-called "heavy water"=1.1053 g/mL at 20 0C. determine what would be the mass of the flask when filled with heavy water?
A 6.50 x 10^-5 M solution of potassium permanganate has a percent transmittance of 27.3% when measured in a 1.15-cm cell at a wavelength of 525 nm.
a coffee contains 100 mL of H2O. initial temperature of calorimeter is temperature 23 C.if 8.20 g of CaCl2 is added to calorimeter. what will be the final temperature of the solution in the calorimeter.
You are asked to prepare 150 mL of a 0.059 M solution of silver nitrate. How many grams of silver nitrate do you need to weigh out.
Fuel cells combine H2(g) and O2(g) to produce H2O(g). What is the crossover temperature for this reaction at standard state
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