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The vapour pressure of water at 20°C is 17.5 torr. What is the vapour pressure of water above an aqueous solution that is 40.0% glucose (C6H12O6) by mass?
If you have 200.0 mL of a 30.0% aqueous solution of isopropyl alcohol, what volume of water is in the solution?
Will the concentration of Ni2+ increase or decrease as the cell operatres? c. What is the initial concentration of Ag+ in the cell?
Consider the titration of potassium acid phthalate (KHP) with NaOH. If 0.4278g KHP needed 22.86mL of NaOH to reach the phenolphthalein pink end point, explain what is the molarity of the NaOH. Explain molar mass of KHP is 204.22 g/mol.
Joe weighs out 212.3 g of potassium phosphate and adds it to a 1.0 liter volumetric flask. He then fills the volumetric flask to the calibration line with water
An unknown gas X effuses 1.65 times faster than C3H8. What is the molecular mass of gas X?
Why can the ethanol be used as a fuel in the spirit burner? After about ten minutes, the reading on the thermometer is checked. What should one observe?
during a work-up we are asked to interrupt vacuum drizzle cold methanol over the crude product then reestablish vacuum.
The preliminary concentration for iodine is 0.08 mole, if the reaction rate at this concentration was 36 seconds. Explain what would the reaction rate be if the concentration of iodine is doubled to 0.16 mole
hydrochloric acid hcl is a strong acid that undergoes essentially complete dissociation in water according to the
10 ml of .1 M phosphoric acid is titrated with .1M NaOH. After 10 ml of NaOH has been added the pH is 4 What is the ratio of H3PO4/H2PO4 - at this point
find the mass percentage of nh4cl nacl andsio2 in an unknown mixture if 5.0655 gm of this mixture when heated at 340 0c
question in a reaction 34.6 g of chromiumiii oxide reacts with 12.3 g of aluminum to produce chromium and aluminum
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