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1. Covert the following, showing all work: a. How many moles of ibuprofen, C13H18O2, are in...

1. Covert the following, showing all work:

a. How many moles of ibuprofen, C13H18O2, are in a 200 mg tablet that is 100% ibuprofen?

b. A 5.00 g sample of NaOH is dissolved in 750 mL of solution. What is the concentration of Na+ ions in solution?

2. Nicotine contains 74.02% carbon, 8.710% hydrogen, and 17.27% nitrogen. It has a molar mass of 162.28 g/mol, what is the empirical formula and molecular formula for nicotine?

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