How many c2h4 molecules are contained in 45.8 mg of c2h4? the molar mass of c2h4 is 28.05 g/mol?

molecules.

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 Liters at STP and contains avogadro's number of particles.

To calculate the moles, we use the equation:

       (1g=1000mg)

Now 1 mole of molecule contains = of molecules.

0.0016 moles of molecule contains = molecules.

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