chemistry

posted by .

amphetamine (c9h13n) is a powerful stimulant. what is the percent composition of all of the elements in this compound?

A. 9%C;13%H;1%N
B. 30%C;10%H;60%N
C. 60%C;35$H;5%N
D. 80%C;9.6%H;10.4%N

I think b

  • chemistry -

    Nope. It's done the same way the C in C3H8 is done. Follow that route.

  • chemistry -

    You're guessing. Follow the % carbon in the C3H8 problem.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. organic chemistry

    Determine the percent composition of your unknown mixture. My data for refractive indexes for acetone is 1.365 and water is 1.330. This is what my unknown mixture was composed of. How do I use this info to find percent composition …
  2. chemistry

    1.to calculate the percent by massof an element in a known compound, divide the mass of the element in one mole by the _______and multiply by 100%. A(n) _______formula represents the lowest________ratio of the elements in a compound. …
  3. AP Chemistry

    An organic compound was synthesized and found to contain only C, H, N, O, and Cl. It was observed that when .150g sample of the compound was burned, it produced .138g of CO2 and .0566g of H2O. All the Nitrogen in a different .200g …
  4. College Chemistry

    Amphetamine (C9H13N) is a weak base with a pKb of 4.2. Calculate the pH of a solution containing an amphetamine concentration of 215 mg/L. I calculated the molarity as 1.58*10^-3 and the Ka as 1.58*10^-10. I did ICE and i got the pH …
  5. chemistry 1046

    A.Determine the pH of the solution. a solution that is 1.17% HCl by mass (Assume a density of 1.01 g/mL for the solution.) B. Amphetamine (C9H13N) is a weak base with a pKb of 4.2. Calculate the pH of a solution containing an amphetamine …
  6. Chem

    A sample of an unknown biochemical compound is found to have a percent composition of 55.03 percent carbon, 5.54 percent hydrogen, 32.10 percent nitrogen and the balance oxygen. What is the simplest formula for this compound ?
  7. Chemistry 11

    Find the percent composition of a compound containing sodium and chlorine if 24.34g of the compound contains 13.45g of sodium. My work: Molar mass of NaCl: MNa +MCl = 22.99 g/mol + 35.45 g/mol = 58.44 g/mol Percent composition of Na: …
  8. chemistry

    29.0g Ag combine completely with 4.30g S to form a compound. what is the percent composition of each element in this compound
  9. chemistry

    9.03 of Mg combine completely with 3.48g of N to form compound. what is the percent composition of each element in this compound?
  10. Chemistry

    An organic compound on analysis gives the following percentage composition of elements present. Carbon 61.85%,hydrogen 10.50% and oxygen 27.65%.determine the empirical formula of the compound.(C=12,H=1,O=16)

More Similar Questions