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a) the density of an unknown compound made from sulfur and oxygen is 2.47 x 10^-3 g/mL at 23 C and 76 kPa. what are the possible molecular formulas for the compound?
b) according to the adiabatic process, we can define the suitable equation pV=constant. derive an expression that defines the work done using this relation for an adiabatic process. If the initial and final temperatures for the process are T1 and T2, is the work identical to work (adiabtic)= Cv (T2-T1)
A 75.0 L steel tank at 20.0C contains acetylene gas (C2H2) at a pressure of 1.39 atm. Assuming ideal gas behavior, how many grams of acetylene are in the tank?
How does the first ionization energies change as you go from left to right across the periods; explain what causes the trend to fluctuate
Calculate the masses of the reactants and products of the following equation. Please show work.
Determine the molarity of Ni in the 20.0 mL solution. Determine the mass in grams of Ni in the original sample. Determine the weight percent of Ni in the sample.
What volume of 0.100 M NaOH is needed to make 100.0 mL of a buffer solution with a pH of 6.00 if one starts with 50.0 mL of 0.100 M potassium hydrogen phthalate?
A student found that the mass of an empty specific gravity bottle was 21.431 g. Metal pieces were added to the dry bottle. The specific gravity bottle and the metal pieces together
If 8686 C of charge is passed through molten magnesium chloride, calculate the number of moles of Mg(l) produced
What is the freezing point of an aqueous 2.65 m calcium chloride (CaCl2) solution? The freezing point of pure water is 0.0ºC and Kf of pure water is -1.86ºC/m.
At 373 K, Keq = 2.39 for the following reaction: SO2Cl2(g) = SO2(g) + Cl2(g) In an equilibrium mixture of the three gases, the partial pressures of SO2Cl2 and SO2 are 3.31 atm and 1.59 atm, respectively.
The appropriate chemical equation is PCl3(g)+Cl2(g) PCl2 Calculate the new partial pressures after equilibrium is reestablished.
Calculatethe number of grams of alcohol present in 1.00L of 75 proof gin The density of ethanol is 0.798g/mL.
With what minimum speed must Fran leave the ground in order to lift her center of mass 1.95 m and cross the bar with a speed of 0.70 m/s?
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