How many grams of carbon are there in 325 mg of aspirin, C9H8O4?
convert mg to g: 325 mg = 0.325 g
molar mass = 180.16g/mol
Number of moles = mass / molar mass = 0.325 g / 180.16 g/mol = 1.8040*10^-3 moles
Each one mole of aspirin gives 9 moles of carbon then
1.8040*10^-3 moles of aspirin = 9*1.8040*10^-3 = 16.2360*10^-3 moles of carbon
Mass of carbon = 16.236*10^-3 mole * 12.0107g/mol = 0.195 g
We can tally this by: % of carbon in 180.16g of aspirin is 9*120107 = 108.10 g of carbon
% composition of C = (108.10/180.16) = 60.00 %
Then 0.325 g of aspiring should contains = 0.325*0.600= 0.195 g of carbon hence our answer is correct.
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A typical aspirin tablet contains 324 mg of acetylsalicylic acid (C9H8O4), a monoprotic acid having a Ka = 3.0 x 10-4. If you dissolve two aspirin tablets in 300. mL of water, what is the pH of the solution acetylsalicylic acid? A typical aspirin tablet contains 324 mg of acetylsalicylic acid (C9H8O4), a monoprotic acid having a Ka = 3.0 x 10-4. If you dissolve two aspirin tablets in 300. mL of water, what is the percent dissociation of the...
A typical aspirin tablet contains 324 mg of aspirin (acetylsalicyclic acid, C9H8O4), a monoprotic acid having Ka = 3.0*10-4. A) If you dissolve two aspirin tablets in a 270 mL glass of water, what is the pH of the solution? B) What is the percent dissociation of the solution? I got part A right but kept getting wrong answer for percent dissociation. Please show steps thank you
A brand of aspirin claims to contain 325 mg (1 g = 1000 mg) of aspirin per tablet. In addition to pure aspirin, a tablet also contains a non-active filler. We assume that the tablet contains only these two components: aspirin and filler. If a single tablet weighs 1.17 g, calculate the percent filler.
A brand of aspirin claims to contain 325 mg (1 g = 1000 mg) of aspirin per tablet. In addition to pure aspirin, a tablet also contains a non-active filler. We assume that the tablet contains only these two components: aspirin and filler. If a single tablet weighs 1.17 g, calculate the percent filler. Calculate to the correct number of significant figures.
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many grams are in 81 mg aspirin sample
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a. How many moles are there in 36 grams of carbon? b. How many grams are there in 3 moles of sodium c. how many grams are there in 2 moles of water? d. How many moles in: 6.22 grams of aluminum e. How many moles in 1.26 mg of gold? f. how many moles in 5.2 kg of carbon? 3. Calculate the molar mass of sodium nitride 4. Calculate the molar mass of sulfuric acid 5. Give the percent...
how many grams of pure aspirin are in twelve 5-grain aspirin tablets?
Aspirin is acetylsalicylic
acid (ASA) (
C9H8O4). It reacts with NaOH ( a
base) to produce salt (sodium acetylate) and water. Both Aspirin
and NaOH react in 1:1 molar ratio, as
C9H8O4
+
NaOH →
NaC9H7O4
+ H2O
So, moles of NaOH = moles of ASA
Or, mmol of of NaOH = mmole of
ASA
; mmol is milli mol
and mmole of NaOH = Molarity of NaOH * Volume
of naOH used (in ml)
=
(0.1177 M) *...