8. Serotonin (molar mass= 176 g/mol) transmits nerve impulses between neurons. It contains 68.2% C, 6.86% H, 15.9% N, and 9.08% O by mass. What is the molecular formula? (Hint: assume 100.0 g sample, what do you need to find first?)

8. Serotonin (molar mass= 176 g/mol) transmits nerve impulses between neurons. It contains 68.2% C, 6.86% H, 15.9% N, and 9.08% O by mass. What is the molecular formula? (Hint: assume 100.0 g sample, what do you need to find first?)

Chemistry & Chemical Reactivity

10th Edition

ISBN:9781337399074

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter2: Atoms Molecules And Ions

Section: Chapter Questions

Problem 119GQ: The structure of one of the bases in DNA, adenine, is shown here. Which represents the greater mass:...

See similar textbooks

Related questions

Q: Gaseous ethane (CH3 CH3) will react with gaseous oxygen (O₂) to produce gaseous carbon dioxide (CO₂)…

A: A balanced chemical equation contain equal number of atoms of each elements on both sides of the…

Q: Predict the products of the following reaction. If no reaction will occur, use the NO REACTION…

A: Reaction : (CH2CH2OH)2(I) +O2(g) → ?

Q: The reaction of DBU with 2-bromoheptane gives two alkene products, what are they? Which of these…

A: Here DBU is a base and it leads to elimination reaction (E 2 reaction).

Q: Carbonic acid (hydrogen carbonate) decomposes to form water and carbon di oxide and adds the snap to…

A: 1)Carbonic acid (hydrogen carbonate) decomposes to form water and carbon di oxide and adds the snap…

Q: A flask is charged with 1.500 atm of N2O4(g) and 1.00 atm NO2(g) at 25 °C, and the following…

A: The reaction: A flask is charged with 1.500 atm of N2O4(g) and 1.00 atm NO2(g at 25 ° N2O4(g) ⇋…

Q: Give the set of four quantum numbers that could represent the electron lost to form the Rb ION from…

Q: 7. If 18.0 grams of CO2 are produced, how many grams of H₂O are produced. 2C₂H4(+602 → 4 CO2 + 4H₂O

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: How do chloropentamminecobalt (lll) chloride and tetraamminecarbonatocobalt (lll) differ…

A: Chloropentamminecobalt (III) chloride and tetraamminecarbonatocobalt (III) are two coordination…

Q: Based on your answer for Question 3 from The Additivity of Heats (Hess's Law) Worksheet determine…

A: Data

Q: Tungsten hexacarbonyl can be prepared by reacting WCl6 with triethylaluminium in the presence of…

A: Tungsten hexacarbonyl can be prepared by reacting WCl6 with triethylaluminium in the presence of…

Q: Pure B-D-glucose has [a] = +18° Pure a-D-glucose has [a] = +112° If either pure, crystalline anomer…

A: Given that Pure α-glucose has [α]D = +18° Pure β- D-glucose has [α]D = +112° When crystalline anomer…

Q: The preparations of two aqueous solutions are described in the table below. For each solution, write…

Q: H₂C В H OCH3 C D

Q: Write a balanced chemical equation for each of the following processes. Text a. A piece of copper is…

A: A reaction is balanced when no. of atoms of each element present are equal for both reactants &…

Q: 10. Draw the structure of the major product(s) for the following reactions: i. iii. Br CI CH,CH,ONa…

A: First reaction is nucleophilic substitution reaction (SN2). Second reaction is elimination reaction…

Q: Use the Henderson-Hasselbalch approximation to calculate the pH of a solution prepared by dissolving…

A: Given Moles of strong base, Ca(OH)2= 0.080 mol Moles of strong acid, HNO3=0.080mol Neutralization…

Q: Write the formula and name of a compound formed from the tonic interaction between a 2+ ion and…

A: Charge on positive charge on cation in the given compound= +2 Charge on negative charge on anion in…

Q: 1. NH₂ HN- + N(CH3)3

A: The desired products can be formed by several reactions with the starting materials. 1. Formation…

Q: Choose the best Lewis structure for OCI2. O :CI=Ö-C: O:ä-ö=cl: OCI=Ö=CI: OCI=O=C: 0:d-6–d:

A: Lewis structure : It is an simplest representation of the structure of molecules . By this we get…

Q: The standard state of carbon is graphite. ΔH°f,diamond is +1.896 kJ/mol. Diamonds are normally…

A: The question is based on the concept of chemical thermodynamics . we need to calculate enthalpy of…

Q: For the fusion reaction shown, calculate the change in energy of the reaction in units of joules per…

Q: At 900 K, the following reaction has Kp = 0.345: 2 SO2(g) + O2(g) ⇋ 2 SO3(g). In an equilibrium…

A: Equilibrium constant Kp for a reaction is defined as the product of the partial pressure of the…

Q: Which of the following quantum numbers describes the orientation of an orbital? magnetic quantum…

Q: 24. A 25.0 mL bubble is released from a diver's air tank at a pressure of 4.00 atm. and a…

A: Initial volume of bubble released from diver's tank , V1=25.0 mL Initial pressure , P1=4.00 atm…

Q: In the study of the vapour pressure of chloroform is determined. Chloroform is placed in a container…

A: Dependent variable is the variable dependent on the independent variable. It is the variable being…

Q: Which of the following are correct Lewis structures for the molecule indicated below? -C A B Watter…

A: The Lewis structure of a molecule describe the distribution of electrons in different orbitals. A…

Q: A 993.3 ng sample of an unknown radioactive substance was placed in storage and its mass measured…

Q: 22. Use VSEPR theory to predict the shape of b) PH3 a) SiH4 c) Cl₂O d) ammonium ion e) phosphate ion

A: we have to predict the shape of given species using VSEPR theory

Q: What is the pH of a buffer solution consisting of 25.0g HC2H3O2 and 45.0g of NaC2H3O2 in 625 ml…

A: mass of HC2H3O2 = 25.0 g mass of NaC2H3O2 = 45.0 g Ka = 1.76 x10-5 pH = ?

Q: In the reaction between 4.28 g of K(s) and excess of O2(g), potassium oxide is formed . What mass…

Q: show how many straight chain dichloroalkanes correspond to C4H8Cl and name them

A: Given molecular formula of compound is C4H8Cl2 We have to write structure and names of different…

Q: Potassium superoxide, KO2, reacts with carbon dioxide to form potassium carbonate and oxygen…

A: We have the reaction 4KO2 + 2CO2 → 2K2CO3 + 3O2 Molar mass of KO2 = 71.1 g/mol Molar mass of CO2 =…

Q: What is the most stable product of the following reaction. O O O A B C E H₂SO4 B Product D E

A: It is a type of rearrangement reaction in which protonation of an alkene give more stable…

Q: MeO н NaBH4, H₂O MeO OH

Q: Describe chemical equilibria with words, pictures, and graphs. When the concentrations of the…

Q: 23. What is the volume in liters, of occupied by 64.0 g O₂ gas at STP? 2

Q: (a) Complete the reaction scheme; what are the reagents labelled 1-7? +2 Et₂O PhMgBr (PhCH,)SnCl + 4…

A: Question is from basic organometallic chemistry .

Q: Write the IUPAC name for each of the following: Part A OH || 1 CH3-C-N-CH₂-CH3 Spell out the full…

Q: 4. If the temperature is 6.0°C and the pressure is 4.5 atm, what is the pressure of the gas when the…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: calculate the solubility of ca3(po4)2 in water ksp = 2.07 x 10-33

A: Solubility product (Ksp) of a sparingly soluble salt is defined as the product concentration of…

Q: pls help with these questions - 3

A: Note: “Since you have posted multiple questions, we will provide the solution only to the first…

Q: 11. Consider the structure S Which is the correct Hantzsch-Widman name? a. dithiapyridine b.…

Q: 4. Antimony has many uses, for example, in infrared devices and as part of an alloy in lead storage…

Q: 3. When Zn reacts with an aqueous solution of HNO3, the products are A. ZnHNO3 + H₂O B. Zn (NO3)2 +…

A: Reacts with metal they produce sold of metal and hydrogen gas. metal + acid = salt + hydrogen gas.

Q: Image 17 A О OCH₂CH3 CH3 HO B 1. CH₂MgBr 2. Н3О Н CH3 HO С ? OCH₂CH₂ CH3 HO D с CH₂ CH3

A: What major product is formed in the reaction shown in Image

Q: Complete and balance the following half-reaction in basic solution. Be sure to include the proper…

A: The reactions can be balanced in 2 mediums - 1- acidic medium (H+) will be there in the balanced…

Q: 1. Balance the following redox equations using the half-reaction method: a. N₂H4 + KBrO3 → N₂ + KBr…

Q: Identify key peaks in the IR spectra (cycloadduct)

A: A question based on IR spectroscopy. An IR spectrum of a cycloadduct is given that is to be…

Q: Write the nuclear equation for the decay of helium-6 to lithium-6 by positron emission. A helium-6…

A: A question based on nuclear reactions. Information about reactant, product and ejectile are given…

Concept explainers

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.

Question

8. Serotonin (molar mass 176 g/mol) transmits nerve impulses between neurons. It
contains 68.2% C, 6.86% H, 15.9% N, and 9.08% O by mass. What is the molecular
formula? (Hint: assume 100.0 g sample, what do you need to find first?)
-

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1: Writing the given values,

VIEW

Step 2: Calculating the moles of C, H, N and I:

VIEW

Step 3: Determining the the empirical formula of serotonin

VIEW

Step 4: Now we can determine the molecular formula,

VIEW

Solution

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 5 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions

3.122 What type of reasoning were we using when we developed the equation for dilution, MiVi=MfVf ?
A student wants to prepare 1.00 L of a 1.00-M solution of NaOH (molar mass = 40.00 g/mol). If solid NaOH is available, how would the student prepare this solution? If 2.00 M NaOH is available, how would the student prepare the solution? To help ensure three significant figures in the NaOH molarity, to how many significant figures should the volumes and mass be determined?
3.105 Nitric acid is often sold and transported as a concentrated 16 M aqueous solution. How many gallons of such a solution would be needed to contain the roughly 2.1109 pounds of HNO3 produced annually in the United States?
The principal component of mothballs is naphthalene, a compound with a molecular mass of about 130 amu, containing only carbon and hydrogen. A 3.000-mg sample of naphthalene burns to give 10.3 mg of CO2. Determine its empirical and molecular formulas.
The active ingredient in Pepto-BismoÂ® (an over- the-counter remedy for an upset stomach) is bismuth sub-salicylate, C7H5BiO4. Analysis of a 1.7500-g sample of Pepto-Bismol yields 346 mg of bismuth. What percent by mass is bismuth subsalicylate in the sample? (Assume that there are no other bismuth-containing compounds in Pepto-Bismol.)
3.55 An average person inhales roughly 2.5 g of O2 in a minute. How many molecules of oxygen are inhaled in (a) 1 minute, (b) 1 hour, (c) 1 day by an average person?
What is the molarity of each ion present in aqueous solutions of the following compounds prepared by dissolving 28.0 g of each compound in water to make 785 mL of solution? (a) potassium oxide (b) sodium hydrogen carbonate (c) scandium(III) iodite (d) magnesium phosphate
3.120 1f you have 32.6 g of sodium carbonate that is dissolved to give 2.10 L of solution, what is the molarity of the solution? What is the molarity of the sodium ions?
The structure of one of the bases in DNA, adenine, is shown here. Which represents the greater mass: 40.0 g of adenine or 3.0 1023 molecules of the compound?
itamin B12 , cyancobalamin, is essential for human nutrition. Its molecular formula is C63H88CoN14O14P . A lack of this vita min in the diet can lead to anemia. Cyanocohalamin is the form of the vitamin found in vitamin supplements. l type='a'> What is the molar mass of cyanocobalamin to two decimal places? How many moles of cyanocohalamin molecules are present in 250 mg of cyanocobalamin? What is the mass of 0.60 mole of cyanocobalamin? How many atoms of hydrogen are in 1 .0 mole of cyanocobalamin? What is the mass of 1.0107 molecules of cyanocobalamin? What is the mass (in grams) of one molecule of cyanocobalamin?
3.111 The chlorophyll molecule responsible for photosynthesis in plants contains 2.72% Mg by mass. There is only one Mg atom per chlorophyll molecule. How can you determine the molar mass of chlorophyll based on this information?
The space shuttle environmental control system handles excess CO2 (which the astronauts breathe out; it is 4.0% by mass of exhaled air) by reacting it with lithium hydroxide, LiOH, pellets to form lithium carbonate, Li2CO3, and water. If there are seven astronauts on board the shuttle, and each exhales 20. L of air pee minute, how long could clean air be generated if there were 25,000 g of LiOH pellets available for each shuttle mission? Assume the density of air is 0.0010 g/mL.