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A 3.026 g portion of a copper(II) salt was dissolved in a 250 ml volumetric flask. a %0 mL aliquot was analyzed by adding 1 g of KI and titrating the liberated iodine with 23.33mL of .046668M Na2S2O3. Find the weight percent of Cu in the salt.
What observed rotation is expected when a 1.10 M solution of (R)-2-butanol is mixed with an equal volume of a 0.550 M solution of racemic 2-butanol,
a gas has a volume of 2.57L, a pressure of 1.54 atm, and a temperature of 24.5 C. calculate the number of moles of gas present.
Indicate the direction of polarity of each of the following covalent bonds by dragging the appropriate delta notation to each end of the bond.
The acid-dissociation constant for hypochlorous acid (HClO) is 3.0x10^-8 A)Calculate the concentration of H30+at equilibrium if the initial concentration of HClO is 9.0×10-3
If adding 0.552g sample of Metal X to 150 ml of 1.0M HCL caused a temperature increase of 7.33 degrees C, calculate the quantity of heat that has flowed.
how many grams of ammonium nirtate must have reacted if 3.75dm3 of nitrogen gas was collected over water at 26C and 97.8 kPa
If the mobile phase flow rate is 0.4 m/min, what is the analyte linear migration rate, and how long is the column?
PVA (polyvinyl alcohol) strands can form hydrogen bonds between different parts of the same strand. Illustrate how this can occur by using a sketch to show the hydrogen bonding.
The unit cell of a crystalline material containing Ca, O and Ti can be described as follows. The unit cell is face-centred cubic, but with Ca atoms occupying the corner positions and oxygen atoms occupying the face positions.
Volume of sample = 90.0 mL. Temperature = 25 C atmospheric pressure = 745 mm equilibrium vapor presssure of water at 25C = 23.8 mm Hg Calculate number of moles of hydrogen gas collected
The flask was then shaken until the solution was uniform. A 60.0 mL sample of this glucose solution was diluted to 0.500 L. How many grams of glucose are in 100. mL of the final solution?
how do you calculate the H+ in the following solution: [OH-] = 3.44 x 10-1 - need the steps please.
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