1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Lilit [14]
3 years ago
15

A mysterious white powder is found at a crime scene. A simple chemical analysis concludes that the powder is a mixture of sugar

and morphine (C17H19NO3), a weak base similar to ammonia. The crime lab takes 10.00 mg of the mysterious white powder, dissolves it in 100.00 mL water, and titrates it to the equivalence point with 2.84 mL of a standard 0.0100 M HCl solution. What is the percentage of morphine in the white powder?
a. 8.10%
b. 17.3%
c. 32.6%
d. 49.7%
e. 81.0%
Chemistry
1 answer:
iren [92.7K]3 years ago
6 0

Answer:

e. 81.0%

Explanation:

Morphine has Molar mass = 285.34 g/mol

Also, number of males of Morphine = Number of moles of HCl

(At equivalence point )

Now, number of moles of HCl = Molarity × volume

=0.01 mol × 2.84×10^(-3) L

= 2.84×10^(-5) mol

therefore number of moles of morphine= 2.85×10^(-5)

Mass of Morphine= No. of moles × molar mass

= 2.84×10^(-5)×285.34 g/mol

= 0.0081 g

= 8.1 mg

therefore

percentage of morphine = mass of morphine/ mass of powder×100%

= 8.1/10×100% = 81.0%

hence option e is correct.

You might be interested in
Please help 21 points
Novosadov [1.4K]

Answer:

You

Explanation:

Will have to fill in the graph organizer with a story

4 0
2 years ago
Which term best describes a unit of carbon dioxide?
Lelechka [254]

Answer:

Molecule.

Explanation:

carbon and fluorine. Based on the bonding, a unit of carbon dioxideis described as a molecule.

7 0
2 years ago
g A mass spectrum. The peak at mass 100 has a 8% relative abundance. THe peak with mass 85 has a 40% abundance. The peak at 71 h
Sati [7]

Answer:

The peak at mass 100 with a 8% relative abundance is the molecular ion peak

Explanation:

Molecular ion peak has the highest charge to mass ratio,

Mass of 100 is same as mass to charge ratio =100

8 0
3 years ago
There are two different compounds of sulfur and fluorine.
Sedaia [141]
<span>1.18 x 3 = 3.55 </span>
find  ratio of F to F in each compound
.   according to law of multiple proportions  that the masses of one element which combine with a fixed mass of the second element are in a ratio of whole numbers.
now  F is  "one element" and S has  "fixed mass",
the ratio of F6 to Fx = 3:1 
<span>thats why  x= 2
there is less F in SFx
  the ratio is 3:1.
 dividing 6 by 3 and you get 2</span>
5 0
3 years ago
Most organic compounds contain carbon and _____. most organic compounds contain carbon and _____. phosphate nitrogen oxygen hydr
bulgar [2K]
This question can be easily confused with. During the early times, organic compound are directly associated with living beings, people, plants and animals. That is somewhat true. The definition of organic compounds are compounds that contain carbon. So, it is true that most of the compounds in our body are organic. But you may confuse it to the abundance of elements in the body, which is oxygen. However, the most abundant element, besides carbon, in organic compounds is Hydrogen. You will notice this obviously in the organic compounds like alkanes, alkenes, alkynes, carbohydrates, lipids, hormones and proteins. Their general chemical formula usually involves Carbon and Hydrogen.
4 0
3 years ago
Read 2 more answers
Other questions:
  • In the following equation:
    12·1 answer
  • Select the correct answer from each drop-down menu.
    11·1 answer
  • Which of the compounds h2c2o4, ca(oh2, koh, and hi, behave as bases when they are dissolved in water?
    6·2 answers
  • Evaluate ( a=2 b=3)...3a - 2b =​
    15·2 answers
  • Please help me do this question.
    11·1 answer
  • A reaction produces 0.883 moles of H₂O. How many molecules are produced?
    12·1 answer
  • What is the compound of scI2
    11·1 answer
  • When is evaporation used
    14·2 answers
  • 13. Given the table representing the subatomic particles
    9·1 answer
  • Calculate the amount of F.A.S required to prepare 1000 ml of 0.1 molar standard solution of F.A.S
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!