7). How many vitamin C molecules are in a 500-mg tablet of vitamin C (C6H8O6)? 7b ) How many grams of vitamin C contains 3.0 X 1021 molecules?
Added by Josefina O.
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Given: - Mass of vitamin C tablet = 500 mg - Molar mass of vitamin C (C6H8O6) = 176 g/mol Number of moles of vitamin C = Mass / Molar mass Number of moles = 500 mg / 176 g/mol = 0.002841 moles Number of molecules = Number of moles * Avogadro's number Number of Show more…
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A tablet contains $500 .$ mg vitamin $\mathrm{C}, \mathrm{C}_{6} \mathrm{H}_{8} \mathrm{O}_{6} .$ How many moles and molecules of vitamin $\mathrm{C}$ does the tablet contain?
5) Tablets of ascorbic acid, or Vitamin C, C6H8O6, are taken as a dietary supplement. If a typical tablet contains 500 mg, how many molecules of Vitamin C are in a tablet? A) 1.71 x 10^21 molecules B) 1.71 x 10^24 molecules C) 3.0 x 10^24 molecules D) 500 molecules
Ma Ednelyn L.
Vitamin C has the formula $\mathrm{C}_{6} \mathrm{H}_{8} \mathrm{O}_{6}$. Besides being an acid, it is a reducing agent. One method for determining the amount of vitamin $\mathrm{C}$ in a sample is to titrate it with a solution of bromine, $\mathrm{Br}_{2}$, an oxidizing agent. $$\mathrm{C}_{6} \mathrm{H}_{8} \mathrm{O}_{6}(\mathrm{aq})+\mathrm{Br}_{2}(\mathrm{aq}) \rightarrow 2 \mathrm{HBr}(\mathrm{aq})+\mathrm{C}_{6} \mathrm{H}_{6} \mathrm{O}_{6}(\mathrm{aq})$$ A 1.00 -g "chewable" vitamin C tablet requires $27.85 \mathrm{mL}$ of $0.102 \mathrm{M} \mathrm{Br}_{2}$ for titration to the equivalence point. What is the mass of vitamin $\mathrm{C}$ in the tablet?
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