What is the molar mass of adrenaline (C9H13NO3) ?

1 Answer
zhirou
Mar 7, 2018

#183g#.

Explanation:

Molar mass just means the mass of #1# mole of something.
So, the molar mass of #C_9H_13NO_3# would be the mass of #1# mole of #C_9H_13NO_3#.

In turn, #1# mole of #C_9H_13NO_3# is made of:

  • #9# moles of carbon.
  • #13# moles of hydrogen.
  • #1# mole of nitrogen.
  • #3# moles of oxygen.

This tells us that:

#C_9H_13NO_3 = 9xxC + 13xxH + N + 3xxO#

Moziru
From the periodic table, we can find the mass of #1# mole of all of these elements:

#C_9H_13NO_3 = 9xx12.01g + 13xx1.008g + 14.01g + 3xx16.00g#
#C_9H_13NO_3 = 183g#

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