How many hydrogen atoms are contained in 167 grams of propane?

Chemistry

1 answer:

Dmitry_Shevchenko [17]3 years ago

4 0

Propane is C3H8

So Molar mass propane = 3*12 + 8*1 = 44 <span>
No. of moles of propane = 167/44 = 3.795 moles</span>

From the stoichiometry: <span>
No. of moles of hydrogen = 3.795 moles * (8 moles hydrogen / 1 mole propane) = 30.36 moles

Using Avogadros number, 1 mole of any substance contains 6.022 x 10^23 atoms, therefore:
<span>No. of hydrogen atoms = 30.36 * 6.022 x 10^23 = 1.828 x 10^25 atoms</span></span>

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Liula [17]

Answer:

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Explanation:

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5. What is the molar mass of ethanol (C2H5OH)?

AVprozaik [17]

The molar mass is given by the sum of the atomic masses of the component elements of the substance.

In our case, the substance is ethanol or C₂H₅OH.

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