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A solution of H2SO4(aq) with a molal concentration of 5.25 m has a density of 1.266 g/mL. What is the molar concentration of this solution?
Rhodium has a density of 12.45 g/cm3. This metal crystallizes in a face-centered cubic unit cell. Calculate the diameter of a rhodium atom?
A sample of nitrogen gas is contained in a piston with a freely moving cylinder. At 0 C,the volume of the gas is 361 mL. To what temperature must the gas be heated to occupy a volume of 492 mL.
In a second experiment, I(electric current) broke down a sample of H 2 O into 1.45 grams of hydrogen and 11.51 grams oxygen. Are these results reliable with the law of exact extent?
The vapor pressure of pure ethyl bromide at this temperature is 400.0 torr. Assuming an ideal solution, what is the molecular mass of the compound?
calculate the quantity of heat produced when 19.0g of propane is completely combusted in air under standard conditions. Assume that liquid water is forming.
How many kJ of energy are required to convert 747 grams of water (liquid) at 23.4°C to steam at 100°C? The following information is given for H2O:
What is the equilibrium partial pressure of N2O4? (atm) (b) Calculate the value of Kp for the reaction. (c) Calculate the value of Kc for the reaction.
How many milliliters of an aqueous solution of 0.180 M manganese(II) bromide is needed to obtain 12.8 grams of the salt ?
Rate Constant with Temperature Changes, Rearrangement of methyl isonitrile to acetonitrile has activation energy of 25.0 kJ/mol and a rate constant of 8.1*10^-4s-1 @ 80 Celsius.
Calculate the cell potential for the following reaction that takes place in an electrochemical cell at 25°C. Cu(s) | Cu2+(aq, 0.0032 M) || Cu2+(aq, 4.48 M) | Cu(s)
Analysis shows that there are 1.8 moles of H2, 7.45e-05 moles of S2, and 7.2 moles of H2S present in a 50.8 L flask at equilibrium. Calculate the equilibrium constant Kc for the reaction.
can you find out the name and formula of the unknown compound and determine the identity of the element?
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