Anonymous
Anonymous asked in Science & MathematicsChemistry · 10 months ago

# If a cup of your favorite coffee contains 256 mg of caffeine, how many mL of the energy drink will provide the same amount of caffeine? ?

As you are studying for finals, you calculate the concentration of caffeine in an energy drink and discover that it is 0.04529 M in caffeine. The molecular formula of caffeine is C8H10N4O2.

Relevance
• 10 months ago

(256 x 10^-3 g C8H10N4O2) / (194.1906 g C8H10N4O2/mol) / (0.04529 mol/L) =

0.0291 L = 29.1 mL

• Jim
Lv 7
10 months ago

0.256 C8H10N4O2 * (1mol/194.19 g C8H10N4O2) * (1L/0.04529 mol) =g top and bottom cancel, as does moles, leaving Liters0.0291 L = 29.1 mL

• Anonymous
10 months ago

Only one way to be sure.  Start drinking and keep drinking until you think you're about as hyper as you'd be from your favorite coffee drink.

• Dr W
Lv 7
10 months ago

via dimensional analysis

.. 256mg caffeine... 1 mmol caffeine.....  1 mL energy drink

---- ---- ---- ---- --- x ----- ---- ----- ----- x ----- ----- ---- ---- ------ -- = 29.1 mL energy drink

.. .. ... ... 1.... .... ... 194.2 mg caffeine... 0.04529 mmol caffeine