How many moles of hydrogen are in 5.2 moles of c7h18

93.6 moles

Explanation:

According to avogadro's law, 1 mole of every substance weighs equal to the molecular mass and contains avogadro's number of particles

1 molecule of contains 18 atoms of hydrogen

1 mole of contains= atoms of hydrogen.

5.2 moles of contains= atoms of hydrogen.

Now moles of hydrogen= of hydrogen atom.

Thus 5.2 moles of contains 93.6 moles of hydrogen.