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Answer:
When copper(II) chloride and sodium carbonate solutions are combined, solid copper(II) carbonate precipitates, leaving a solution of sodium chloride. Write the conventional equation, total ionic equation, and net ionic equation for this reaction.
Explanation:
The word equation for the reaction is:
Copper (II) chloride(aq) + sodium carbonate (aq) ->sodium chloride (aq) + copper carbonate(s)
The balanced chemical equation of the reaction is:
The complete ionic equation is:
The net ionic equation is obtained from the complete ionic equation after removing the spectator ions:
Answer:
2.01atm
Explanation:
Answer: The mass percentage of is 5.86%
Explanation:
To calculate the mass percentage of in the sample it is necessary to know the mass of the solute (
in this case), and the mass of the solution (pesticide sample, whose mass is explicit in the letter of the problem).
To calculate the mass of the solute, we must take the mass of the precipitate. We can establish a relation between the mass of
and
using the stoichiometry of the compounds:
Since for every mole of Tl in there are two moles of Tl in
, we have:
Using the molar mass of we have:
Finally, we can use the mass percentage formula: