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If a 200 piece of gold (density =19.32 ) is hammered into a sheet measuring 2.5 by 1.0 ft , what is the average thickness of the sheet in meters?
The volume of the gas collected =500 ml then determine the mass of O 2 is collected? The vapor pressure of H 2 O at 25 degree Celsius =23.8 torr
The mole fraction of potassium nitrate in an aqueous solution is .0194. The density of the the solution is 1.0627 g/mL. Calculate the molarity of the solution.
The normal boiling point of carbon disulfide is 46.0 °C and its H°vap = 14.2 kJ mol-1. Draw a complete Lewis structure for carbon disulfide
A solution is made by mixing 500 mL of .121 M NaOH with 500 mL of .1 M CH3COOH. Calculate the equalibrium concentrations of H+. CH3COOH, CH3COO-, OH- and Na+
Explain the fact that even though dibenzoylmethane (C6H5COCH2COC6H5) is not a methyl ketone, it gives a positive iodoform test when treated with the NaOH and I2.
A mixture of acetaldehyde CH3CHO and propanal C2H5CHO under basic conditions
A sample of nitrosyl bromide (NOBr) decomposes according to the equation 2NOBr(g)-->2NO9g) +Br2 An equilibrium mixture in a 5.00- vessel at 100 degrees celsius contains
If the titrant has a molarity of 0.2750 M and there are 5.00 mL of analyte present, what is the molarity of the analyte
The temp of the water and that of the gas are identical at 26°C. How many moles of Helium have been evolved?
Consider the following equation: CO + 2 H2 → CH3OH ?H rxn = -128 kJ Calculate the amount of heat (in kJ) associated with complete reaction of 8.08 g H2.
Consider the following equilibrium process at 686°C: CO2(g) + H2(g) CO(g) + H2O(g) The equilibrium concentrations of the reacting species are [CO] = 0.050 M, [H2] = 0.045 M, [CO2] = 0.086 M, and [H2O] = 0.040 M.
A 29.20 g piece of iron and a 25.30 g piece of gold at 100.0 degree C were dropped into 980.0 mL of water at 15.65 degree C. The molar heat capcities of iron and gold are 25.19 J/(mol degree C) and 25.41 J/(mol degree C), respectively.
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