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Suppose that the atomic mass unit (amu) had been defined as one-quarter of the average mass of an atom of carbon instead of one-twelfth of the mass of an atom of carbon-12. What would the average atomic mass of aluminum be on this new scale?
1. Average atomic mass of aluminum on new scale = ?
What would the value of Avogadro's number be on this new scale?
2. New value for Avogadro's number = ?
An "empty" container is not really empty if it contains air. How may moles of nitrogen are in an "empty" two-liter cola bottle at atmospheric pressure and room temperature (25 C)? Assume ideal behavior. the partial pressure of nitrogen in air at 1..
The tank can hold a pressure of 50.0 atm before bursting. During a fire the gas is heated to 500 C. What is the gas pressure, and will the tank contain the gas without bursting
What is the molality of a solution consisting of 67.3 mL of benzene (C6H6; d=0.877 g/mL) in 227 mL of hexane (C6H14; d=0.660 g/mL)
Estimate the change in entropy if fifty kilo joules of energy are transferred reversibly and isothermally as heat to a large block of Cu at zero degree Celsius and seventy degree Celsius?
Discuss the general procedure on how solvents affect the rate of alkyl chloride hydrolysis. Include the data that need to be collected
How many grams of sulfur (S) are needed to react completely with 355g of mercury (Hg) to form HgS?
a sample of nitrogen occupies a volume of 600 ml at 60 celcius and 650 mm hg of pressure. what will be its volume at stp?
1.90-g sample of a large biomolecule was dissolved in 23.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C. Calculate the molar mass of the biomolecule.
Discuss the behavior of tungsten trioxide (or molybdenum trioxide) and product(s)
A 45.0-L steel tank at 20.0°C contains acetylene gas, C2H2, at a pressure of 1.39 atm. Assuming ideal behavior, how many grams of acetylene are in the tank?
4-methoxybenzoic acid is a weaker acid than benzoic acid, but methoxyacetic acid is a stronger acid than acetic acid. Explain this apparent contradiction.
Styrene, a compound substance used to make Styrofoam® cups and insulation, contains 92.3 and 7.7 by mass and has a molar mass of 104 . What's the empirical formula?
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