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a) Predict the products and what is balanced net ionic equation for the following.
K2SO3(aq) + H3PO4(aq) ->
Enter the balanced net-ionic equation as a text entry. Use phase symbols for all your reactants and products. Use super- and subscripts as needed.
Hint: Phosphoric acid is a weak triprotic acid. Assume the complete reaction of all three acidic hydrogens in the phosphoric acid.
b) "Hard" water often contains dissolved Ca2+ and Al3+ ions. One way to remove them from the water is by adding sodium phosphate. The phosphate salts of Ca2+ and Al3+ are insoluble. A "hard" water sample is 0.0511 molar in CaCl2 and 0.0368 molar in Al(NO3)3. What mass (in grams) of sodium phosphate needs to be added per 1.00 liter of water to precipitate all the Ca2+ and Al3+ ions? Give answer in three significant digits with no units.
Carbonic acid (H2CO3) solution, calcium hydroxide Ca(OH)2 solution, and a mixture of both were placed in three plastic cups. Explain which would be the most and least dangerous when brought into contact with the skin and why.
Calculate the mass of sodium hydroxide needed to to prepare 100 mL of a 0.10 M solution?
Suppose some of the solid calcium hydroxide is advertently transferred along with the supernatant liquid for analysis.
how many grams of oxygen are collected in a reaction where 222 ml of oxygen gas is collected over water at a
The equilibrium molar concentration of the FeNCS^2+ determined from a calibration curve, is 1.5 x 10^-4 mol/L. Calculate, in sequence each of the following quantities in the aqueous solution to determine the equilibrium constant for the reaction.
A 2.30mL of seawater contains about 4.00x10^-10g of gold. The total volume of ocean water is about 1.50x10^21 L. Calculate the total mass of gold found in the worlds oceans in grams
Determine the number of theoretical plates required to perform the operation. (b) State which plate the feed should be introduced onto
The balanced chemical equation is N2+O2 2NO.If more NO is added, bringing its concentration to 0.800 M, what will the final concentration of NO be after equilibrium is re-established
The value that should be reported for the number of moles of gas calculated from the ideal gas equation given the following data (R = 0.08206 L•atm/mol•K, P = 76.00 cmHg, V = 1.000 L, and t = 1°C) is
Determine the temperature to which the exhaust must be cooled to cause the water vapor to condense, if the exhaust is at a total pressure of 22.223 psia.
A hypothetical atom has four allowed energy levels. As shown in the accompanying diagram, the emission spectrum of this atom will contain six transitions, labelled A - F.
a balloon filled with helium gas has a volume of 762 mL at a pressure of 1atm. The balloon is released and reaches altitude of 6.5km, where the pressure is 0.5atm.
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