Answer: A. True
Explanation:
I'm not all the way sure, so please don't hate on me. I looked it up to double check and it should be true.
!PLEASE NOT HATE IF IT'S WRONG!
Food code is like sort of a guide to ensure that the food is presented according decent standards, unadulterated and correctly presented to the customer.
It is published every four years by the " U.S Food and Drug Administration".
Answer:
The answer to your question is 1.25 moles of C
Explanation:
Reaction
5C + 2SO₂ ⇒ CS₂ + 4CO
Check that the reaction is balanced
Reactant Element Product
5 C 5
2 S 2
4 O 4
Use proportions to find the moles of C needed.
5 moles of C ----------------- 2 moles of SO₂
x moles of C ---------------- 0.500 moles of SO₂
x = (0.500 x 5) / 2
x = 1.25 moles of C
Start by converting mg to g. There is .001g in every miligram, so there is 0.4g in this sample.
Then find the molar mass of ibuprofen (C13H18O2) which is 206.3g/mol
Then divide grams by the molar mass to get moles of C13H18O2: (0.4g)/(206.3g/mol) = 1.94x10^-3mol C13H18O2
Then multiply moles by Avogadro's number to get molecules: (1.94x10^-3mol)/(6.02x10^23) = 1.17x10^21 molecules of ibuprofen (C13H18O2)
