Question
Asked Dec 27, 2019
1 views

A low-resolution mass spectrum of the neurotransmitter dopamine gave a molecular ion at m/z = 153. Two possible molecular formulas for this molecular ion are C8H11NO2 and C7H11N3O. A high-resolution mass spectrum provided an exact mass at 153.0680. Which of the possible molecular formulas is the correct one?

 

check_circle

Expert Answer

Step 1

A low resolution mass spectra gives the molecular mass of a compound to the nearest whole number.

A high resolution mass spectra gives the exact molecular mass of a compound.

The exact molecular mass of carbon, hydrogen, oxygen and nitrogen are :

Chemistry homework question answer, step 1, image 1
fullscreen
Step 2

The molecular mass of C8H11NO2 and C7H11N3O can be calcula...

Chemistry homework question answer, step 2, image 1
fullscreen

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in

Science

Chemistry

Other

Related Chemistry Q&A

Find answers to questions asked by student like you
Show more Q&A
add
question_answer

Q: dipole moment of phenol is smaller than that of methanol. Why?

A: The resonance structure is:

question_answer

Q: what are coinage metals?

A: Coinage metals are group of three transition metals of group 11 of periodic table.  The coinage meta...

question_answer

Q: If you add a non-electrolyte to an aqueous solution that already contains an electrolyte, the electr...

A: Given that when a non-electrolyte is added to an aqueous solution that already contains an electroly...

question_answer

Q: what is caustic lunar?

A: The traditionally name of fused silver nitrate is known as caustic lunar. It is composed of silver a...

question_answer

Q: Use retrosynthetic analysis to show how hex-3-yne can be prepared from acetylene and any other organ...

A: Hex-3-yne can be synthesized from acetylene using suitable reagents. This can be shown using retrosy...

question_answer

Q: melting and boiling points of d-block elements are very high. explain, also variation in M.P and B.P...

A: The melting and boiling point of d-block elements are very high except Zn, Cd and Hg. The transition...

question_answer

Q: transition elements are able to show catalytic properties why ?

A: Transition metals show catalytic properties.

question_answer

Q: bleaching by SO2 is considered to be temporary. Why?

A: Sulphur dioxide, SO2 is a reductant.

question_answer

Q: Explain why cis-1-chloro-2-methylcyclohexane undergoes E2 elimination much faster than its trans iso...

A: Anti-periplanar and trans-diaxial arrangement are necessary things for an elimination reaction to oc...