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Prevacid is used to treat gastroesophageal reflux disease (GERD). The chemical formula of Prevacid is C16H14F3N3O2S.a. What is the molar mass of Prevacid?370g/molb. What mass of fluorine is in 0.75 mol of Prevacid?0.12 molc. What number of carbon atoms is in 0.75 mol of Prevacid?12 atomsd. What is the mass of 4.25 3 1021 molecules of Prevacid?????

User Leviticus
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1 Answer

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We have that the Prevacid has 4.25*10^21 molecules.

Remember the Avogadro's Law, which says that 1 mol of a substance equals 6.022*10^23 molecules.

Based on this number, we can do the conversion like this:


4.25\cdot10^(21)molecules\cdot\frac{1\text{ mol}}{6.022\cdot10^(23)}=0.0071\text{ mol.}

Using this result and the molar mass, you can find the mass:


0.071\text{ mol Prevacid}\cdot\frac{370\text{ g Prevacid}}{1\text{ mol Prevacid}}=26.27\text{ g Prevacid.}

Then, the mass of 4.25*10^21 molecules of Prevacid is 26.27 g.*10

User Perel
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