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A solution sample may only contain Ag^+, Pb^2+, and Hg^2+ 2 ions. After the addition of 6 M HCl, a white precipitate forms. After centrifugation, the tube of solid was added to a beaker of boiling water. The tube was centrifuged. Acetic Acid and potassium chromate was added to the liquid that was separated from the solid residue and a bright yellow precipitate formed. The remaining solid residue dissolved when 6 M NH3 was added but no precipitate was formed. The solution was then acidified with 6M HCl and a white precipitate formed. Based on this info, justify your answers to these questions.
Pb is present, and Ag
1. Which of the 3 possible ions are present in the solution sample?
is it Hg is missing
2. Which of the 3 possible ions are absent in the solution sample?
Suppose that the microwave radiation has a wavelength of 13.2 cm. How many photons are required to heat 200. mL of coffee from 23°C to 62°C?
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3.953g of egg shell was reacteed with 50ml of 0.1 mol/l hcl and shel contains ca2co3 after all the sheell reacted resultign solution was placed in a columetric flask and th colume made up to be 100ml.
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A certain atom has a doubly degenerate ground level pair and an upper level of four degenerate states at 450 cm?1 above the ground level. In an atomic beam study of the atoms it was observed that 30 per cent of the atoms
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Assume ideal behavior of diatomic gas and ignore the changes in the number of moles of gas during combustion.
Determine at what minimum angle relative to the centerline perpendicular to the doorway can someone outside the room hear no sound?
The Greek mathematician Archimedes is credited with discovering how to verify the amount of pure gold in an irregularly shaped object (e.g., a crown) by placing it in water. How much water should be displaced by a pure gold object having a mass of..
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