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The solubility of O2 (g) in water is 4.43mg O2/100 g H2O (20ºC and 1 atm). What is the molarity (M) of this saturated solution?
What is the fraction of association for the following potassium propionate solutions. The Ka of propanoic acid is 1.34 × 10-5.
A sample of 0.368 mol of a metal M reacts completely with excess fluorine to form 28.7 g of MF2. what element is represented by the symbol M?
consider a reaction in which ferric oxide is converted to iron and gaseous oxygen. If this reaction is only 83% efficient and the ferric oxide is only 87.5% pure, what mass of ferric oxide is required to make 3 moles of iron
a sample contains both KBr and KI in the unknown quantities. If the sample has a total mass of 5.00g and contains 1.51g K, what are the percentages of KBr and KI in the sample by mass?
For the reaction 2HI(g) H2(g) + I2(g), Kc = 0.290 at 400 K. If the initial concentrations of HI, H2, and I2 are all 1.50 × 10-3 M at 400 K, which one of the following statements is correct
Assuming the waste heat of the engine provides all the heat necessary to melt the iceberg, how much work can this do?
A balloon filled with helium gas has a volume of 500 mL at a pressure of 1 atm. The balloon is released and reaches an altitude of 6.5 km, where the pressure is 0.5 atm.
what is the molar mass of a sample of gas that has a dnesity of 1.09 g/L at 1.02 atm pressure and 25.0C.
Suppose the radius of an atom in a simple cubic unit cell is 0.27 nm. What is the edge length of the unit cell in nm.
Use the oxidation-number method to balance the following net ionic redox equation.
Aluminum reacts with oxygen to make aluminum oxide. If 5.2 moles of aluminum react, how many moles of aluminum oxide are formed. Show work.
By comparing the Charles's law equation to the linear equation, y= -0.171x + 46.837, where y is volume and x is temperature, determine the value of k.
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