Passage Students Were Asked to Bring Items from Home to Serve

Passage
Students were asked to bring items from home to serve as examples for different types of reactions.  The instructor provided additional reactants, solvents, heat, or a catalyst to demonstrate reactions with the household items.The students brought aluminum foil, table salt, sugar, baking soda, vinegar, toilet bowl cleaner, hydrogen peroxide, and antacid tablets.Experiment 1Reactions were performed using the household items.  The reaction conditions and student observations are recorded in Table 1.Table 1  Reaction Conditions and Visual Observations
Experiment 2The reactions that were observed to produce gas bubbles in Experiment 1 were repeated, and samples of the gases produced were collected.  Each gas sample was tested by holding a burning (glowing) wooden splint within the reaction vessel to determine if the reaction evolved O₂, H₂, or CO₂.  A glowing splint placed in O₂ will burn more brightly, one placed in H₂ will ignite the gas, and one placed in CO₂ will be extinguished.  The results of the gas tests are recorded in Table 2.Table 2  Glowing Splint Gas Test Observations

-How will the percent yield of the reaction with table salt and AgNO₃ be affected if some of the solid precipitate is lost when it is filtered from the solution?

A) The percent yield would be greater than 100% because the mass of the isolated product is greater than the calculated mass.
B) The percent yield would be greater than 100% because the mass of the isolated product is less than the calculated mass.
C) The percent yield would be less than 100% because the mass of the isolated product is greater than the calculated mass.
D) The percent yield would be less than 100% because the mass of the isolated product is less than the calculated mass.

Correct Answer:

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