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This is the chemical formula for acetic acid (the chemical that gives the sharp taste to vinegar):

CH₃CO₂H

An analytical chemist has determined by measurements that there are 42.7 moles of carbon in a sample of acetic acid. How many moles of oxygen are in the sample?

Round your answer to 3 significant digits

Problem Page A chemist measures the amount of hydrogen gas produced during an experiment. She finds that 69.9g of hydrogen gas is produced. Calculate the number of moles of hydrogen gas produced. Be sure your answer has the correct number of significant digits.

A chemist determines by measurements that 0.045 moles of iodine solid participate in a chemical reaction. Calculate the mass of iodine solid that participates.

Round your answer to 2 significant digits.

A chemist measures the amount of fluorine gas produced during an experiment. He finds that 556. g of fluorine gas is produced. Calculate the number of moles of fluorine gas produced.

Round your answer to 3  significant digits.

The following chemical reaction takes place in aqueous solution:

2AgF(aq)+Na2S(aq)→Ag2S(s)+2NaF(aq)

Write the net ionic equation for this reaction.

The following chemical reaction takes place in aqueous solution:

2AgF(aq)+Na2S(aq)→Ag2S(s)+2NaF(aq)