MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Hydrogen Peroxide

If 1 grain is...

Question

If 1 grain is equal to 642 mg, how many moles of aspirin (mot wt. = 169 ) are present in a 5 grain aspirin tablet?

Open in App

Solution

Mass of aspirin in the tablet $= 648 \times 5 = 324 m g$
$= 0.324 g$
Mass Number of moles $= \frac{m a s s}{M o l a r m a s s} = \frac{0.324}{169}$
$= 1.92 \times 10^{- 3}$

Suggest Corrections

thumbs-up

0

Similar questions

Q. How many molecules of aspirin (Molar mass =

180 g/mol

) are present in

50 mg

(C_{9} H_{8} O_{4})

is prepared by reacting salicylic acid

(C_{7} H_{6} O_{3})

and acetic anhydride

(C_{4} H_{6} O_{3})

C_{7} H_{6} O_{3} + C_{4} H_{6} O_{3} \to C_{9} H_{8} O_{4} + C_{2} H_{4} O_{2}

How many moles of salicylic acid should be used to prepare six 5-grain aspirin tablets? (1 g = 15.5 grains)

Q. A firm manufactures headache pills in two sizes A and B. Size A contains 2 grains of aspirin, 5 grains of bicarbonate and 1 grain of codeine; size B contains 1 grain of aspirin, 8 grains of bicarbonate and 66 grains of codeine. It has been found by users that it requires at least 12 grains of aspirin, 7.4 grains of bicarbonate and 24 grains of codeine for providing immediate effects. Determine graphically the least number of pills a patient should have to get immediate relief. Determine also the quantity of codeine consumed by patient.

Q. Aspirin has the formula

C_{9} H_{8} O_{4}

. Number of moles of aspirin in a tablet weighing

500

x \times 10^{- 5}

. Then, the value of

x

Q. One aspirin pill contains 360 mg of aspirin. To form 10 pills of aspirin from salicylic acid and acetic anhydride, how many grams of salicylic acid is required?

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Hydrogen Peroxide

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Hydrogen Peroxide

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon