Question

2. A normal dose of ibuprofen is 200. mg. How many ibuprofen molecules are there in a dose of ibuprofen? The molecular formula of ibuprofen is C13H18O2. (Hint: grams to mol and mol to molecules)

3-Propane fuel is used in BBQs. Use the following reaction to determine how many moles of carbon dioxide gas are produced from burning of 6 moles of propane gas.
C3H8(g) + 5O2(g) ®  4H2O(g) + 3CO2(g)

4- A. If a person inhales 51 moles of oxygen, how many grams of oxygen molecules are being inhaled?

B. How many molecules are being inhaled?

2.
The molecular formula of ibuprofen is C13H18O2
The atomic masses of C, H and O are 12 g/mol, 1 g/mol and 16 g/mol respectively.
The molar mass of ibuprofen is
200 mg = 0.200 g
Number of moles
Number of molecules molecules

3.
The burning of 1 mole propane produces 3 moles of CO2.
The burning of 6 mole propane produces moles of CO2

4.A
The molar mass of oxygen is 32 g/mol.
Grams of oxygen molecules inhaled
B
Number of molecules being inhaled

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