Answered: A first order reaction initially…

A first order reaction initially contains 1.45 × 1020 molecules. If the reaction has a half-life of 20.0 minutes, how many molecules remain unreacted after 80.0 minutes?

Chemistry: Principles and Reactions

8th Edition

ISBN:9781305079373

Author:William L. Masterton, Cecile N. Hurley

Publisher:William L. Masterton, Cecile N. Hurley

Chapter11: Rate Of Reaction

Section: Chapter Questions

Problem 63QAP: The uncoiling of deoxyribonucleic acid (DNA) is a first-order reaction. Its activation energy is 420...

See similar textbooks

Related questions

Q: 1. What is the composition of the nuclei modeled by these symbols? How many protons and neutrons?…

A: Two questions based on nuclear reactions. Explanation for nuclear notation and the conversion into…

Q: What is the isotope symbol for atoms that contain the following numbers of subatomic particles? a)…

A: The atomic number of an atom is the number of protons present in the atom. For a neutral atom, the…

Q: How many hydrogen-bond donors and acceptors are present in the following molecule? OH OH a) two…

A: A hydrogen bond is formed between the molecule which contains H attached to highly electronegative…

Q: How many total atoms are there in each molecule of Sr(NO3)2*4H2O

A: Molecular formula = Sr(NO3)2*4H2O

Q: Using the molar enthalpies of formation and the formula, determine the change in enthalpy for the…

A: The enthalpy of formation is defined as the amount of heat released when a substance undergoes…

Q: How many kinds of chemically non-equivalent hydrogens are there in each of the following compounds?…

A: Chemically non-equivalent hydrogens means the types of hydrogens which are present at different…

Q: Calculate the molarity of a solution prepared by dissolving 14.5 g of BaCl_2 in 250 mL of solution.

A: Mass of BaCl2 = 14.5 g Volume of BaCl2 = 250 mL Molar mass of BaCl2 = 208.23 g/mol

Q: Predict the equilibrium concentration of Ca²+ in the reaction described below by constructing an ICE…

Q: 1. Why is oxygen NOT a greenhouse gas?

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

Q: What is the mechanism of methyl salicylate formation?

Q: A 5.361 g of sample of a mixture containing Ba(OH)2•8H2O (MM = 315.5) and NaCl (MM = 58.44) yielded…

A: In the given question we have to calculate the grams of sodium in the mixture,First of all, we have…

Q: A certain half-reaction has a standard reduction potential Ed-0.97 V. An engineer proposes using…

A: 1. Standard reduction potential of half-reaction, = -0.97 V (at the anode)2. Minimum EMF of the…

Q: How would you prepare 500 mL of a 50 mM acetate buffer at pH 4.0 using sodium acetate trihydrate…

A: A buffer is a solution which resist any change in pH on adding a small amount of acid or base . it…

Q: The Ksp of AgI, silver iodide= 8.3x10-17. What is the solubility of AgI in a saturated solution of…

Q: b. Convert the following Haworth projection into a Fischer projection of the open (acyclic) form of…

A: The hydroxy groups which are located below on the ring of Howarth projection moves right side on the…

Q: 15) Determine the equilibrium concentrations of both Cu(NH3)4 2+ and Cu²+ in a solution made…

A: To determine the equilibrium concentrations of Cu(NH3)2+ and Cu²+ in the solution, we'll use the…

Q: 2 3 4 5 Data Table 1: Mass, Volume, and Density of Water for Trials 1-5. (Be sure to include the…

A: Table : Mass, Volume and Density of water

Q: Find delta S for the formation of 1 mole of PCl5 (g) for its elements

A: Molecule : PCI5

Q: 15.22 Polycyclic hydrocarbon derivatives are used as medication for viral infections. A com- pound…

Q: 64. An electrochemical cell consists of a chromium electrode in 1.0 mol/L solution of Cr(NO3)3…

A: Given spontaneous cell reaction:-Cr(s) + 3Ag+(aq) -------> Cr3+(aq) + 3Ag(s)Here, Cr undergoes…

Q: onsider the following mechanism: N2O5(8) NO2(g) + NO3 (8) K-1 NO2(g) + NO3(g) NO(g) + NO2(g)…

A: The rate of production of O2 is to be derived using steady state approximation.

Q: 9. Sn+2 solution (100 mL) was mixed with 12 (115 mL, 0.05 M). the resulting solution was titrated…

A: The balanced net ionic equation is In the above redox-reaction, Sn2+ is…

Q: Design a synthetic route to perform the transformation shown below. You may use any other reagents…

A: To get the target molecule we have to do the retrosynthetic analysis by doing this we get…

Q: 3. The graph below shows the energy of a chemical reaction. potential energy activated complex…

A: Question is about to find the type of a chemical reaction from its energy graph. The given types…

Q: Describe the differences between the infrared spectra of butanoic acid and 2-butanone

A: Butanoic acid and 2-butanone are two different compounds with distinct molecular structures, and as…

Q: Which of the following gives the balanced equation for this reaction? K3PO4 + Ca(NO3)2 → Ca3(PO4)2 +…

A: A balanced chemical equation has the equal number of atoms on both sides of the equation.

Q: Oxidative cleavage of the following molecule results in two organic molecules What is the other one?…

A: The reagent NaIO4 is selective oxidizing agent for 1,2-diols to corresponding cabonyl compounds are…

Q: tudent prepares a 0.18M aqueous solution of butanoic acid (C3H₂CO₂H). Calculate the fraction of…

A: Concentration of butanoic acid = 0.18 M From table , Ka of butanoic acid =

Q: You prepare a buffer by mixing 0.15 mol propanoic acid (pKa = 4.87) and 0.25 mol sodium propionate.…

A: Mole of propanoic acid = 0.15 molMole of sodium propionate = 0.25 molpKa = 4.87 Mole of NaOH = 0.025…

Q: How is caffeine linked to a PVA matrix? I mean which are the intermolecular interactions. How…

A: Caffeine, a naturally occurring stimulant found in various plants, can interact with a polyvinyl…

Q: Solids are more soluble at high temperatures and gases are less soluble at higher temperatures. True…

A: Solubility of any substance is defined as the maximum amount of the substance that can be dissolved…

Q: Draw a structural formula for ethanamine. You do not have to consider stereochemistry. • You do not…

A: Ethanamine, also known as ethylamine, is an organic compound with the chemical formula CH3CH2NH2.

Q: 3. For the following amines, pr a)

A: This is organic synthesis problem. We have to prvide necessary reagent to…

Q: 33. Aspirin (C9H8O4), which many students take after a chemistry exam, is prepared by the reaction…

Q: How many kinds of chemically non-equivalent hydrogens are there in each of the following compounds?…

A: a. the number of chemically non equivalent hydrogens in 1st molecule are 4.b. the number of…

Q: Balance the following chemical equation. Na2S4O6 + H₂O2 →>> Na2SO4+H₂O + H₂SO4

A: A chemical reaction equation can be balanced by the matrix method by using the following steps:Step…

Q: conducted a UV-vis spectra for caffeine/PVA films. I got two peaks at about 203nm and 272nm. I think…

A: 1) Based on your UV-Vis spectra of caffeine/PVA films, your interpretation regarding the origins of…

Q: Balance the chemical equation. CS₂ + NH3 H₂S+NH SCN Assume the coefficient of NH4 SCN is 1. What is…

A: A balanced chemical equation is a representation of a chemical reaction that includes the reactants…

Q: Consider the following equilibrium reaction for hydrocyanic acid, HCN. HCN H+ + CN At 25°C the…

A: Kc value can be calculated from the given balanced equilibrium reaction by using where [products ] =…

Q: A mixture of NaBr, Nal and NaNO3 weighs 0.6500 g. With AgNO3, a precipitate of the two halides is…

A: To determine the percentage of NaNO3 in the original sample, we need to calculate the mass of NaNO3…

Q: What catalyst can be added at hydrogen peroxide decomposition?

A: Catalyst is a chemical substance that speeds up the rate of the reaction without being consumed…

Q: 23. What is the percent oxygen by mass in Al2(SO4) 3?

Q: Macmillan Learning Consider the three structures. 1,1-dimethylcyclobutane (a) Which of these…

A: The angle strain arises due to deviation from the bond angle for a particular type of hybridization.…

Q: How many moles of NO₂ would be required to produce 4.54 moles of HNO₃ in the presence of excess…

Q: You are asked to balance the following redox equation. What characteristics does this equation have…

A: The reaction given : We will balance this equation by half reaction methode due to the reason that…

Q: 1. Which of the following molecules would undergo a successful Claisen condensation with itself? A B…

A: Claisen ester condensation is a carbon-carbon bond forming reaction between two esters in the…

Q: If cell potential of the cell Mg/ Mg2+ (0.01 M) // HCl(x M)/ H2(g. 1.0 atm) / Pt, 2.09 v at 25 °C,…

Q: For the equilibrium 21Br(g) 12(g) + Br2(g) Kc = 8.50 × 10³ at 150 °C. If 0.0600 mol of IBr is placed…

Q: NaOCH3 CH3OH (H* workup) OHO

A: An ester is reacted with NaOCH3 in presence of CH3OH

Q: An archeologist believes that she has uncovered a wooly mammoth skull that is 6000 years (i.e., the…

A: The question is based on the concept of radioactivity. we need to calculate rate of integration of…

Question

Expert Solution

This question has been solved!

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

SEE SOLUTION Check out a sample Q&A here

Step 1: Formula

VIEW

Step 2: Solution

VIEW

Solution

VIEW

Step by step

Solved in 3 steps with 1 images

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

Radioactive phosphorus is used in the study of biochemical reaction mechanisms because phosphorus atoms are components of many biochemical molecules. The location of the phosphorus (and the location of the molecule it is bound in) can be detected from the electrons (beta particles) it produces: P1532S1632+e Rate =4.85102day1[32P] What is the instantaneous rate of production of electrons in a sample with a phosphorus concentration of 0.0033 M?
A certain reaction has the form aAProducts At a particular temperature, concentration versus time data were collected. A plot of 1/ [A] versus Lime (in seconds) gave a straight line with a slope of 6.90 102. What is the differential rate law for this reaction? What is the integrated rate law for this reaction? What is the value of the rate constant for this reaction? If [A]0 for this reaction is 0.100 M, what is the first half-life (in seconds)? If the original concentration (at t = 0) is 0.100 M, what is the second half-life (in seconds)?
What is the difference between average rate, initial rate, and instantaneous rate?
The first-order rate constant for the decomposition of a certain hormone in water at 25C is 3.42104day1. (a) If a 0.0200 M solution of the hormone is stored at 25C for two months, what will its concentration be at the end of that period? (b) How long will it take for the concentration of the solution to drop from 0.0200 M to 0.00350 M? (c) What is the half-life of the hormone?
Describe how graphical methods can be used to determine the order of a reaction and its rate constant from a series of data that includes the concentration of A at varying times.
The hypothetical reaction X(g)+12Y(g)productsis first-order in X and second-order in Y. The rate of the reaction is 0.00389 mol/L min when [X] is 0.150 M and [Y] is 0.0800 M. (a) What is the value for k? (b) At what concentration of [Y] is the rate 0.00948 mol/L min and [X] is 0.0441 M? (c) At what concentration of [X] is the rate 0.0124 mol/L min and [ Y ]=2[ X ]?
Consider a reaction of the type aA products, in which the rate law is found to he rate = k[A]3 (termolecular reactions are improbable but possible). If the first half-tife of the reaction is found to he 40. s, what is the time for the second half-life? Hint: Using your calculus knowledge, derive the integrated rate law from the differential rate law for a tennolecular reaction: Rate=d[A]dt=k[A]3
A substance undergoes first-order decomposition. After 40.0 min at 500°C, only 12.5% of the original sample remains. YYliat is the half-life of the decomposition? If the original sample weighed 243 g, how much would remain after 2.00 h?
11.48 The following data were collected for the decomposition of NT),-: Time, f (min) [N2Os] (mol L-1) 0 0.200 5 0.171 10 0.146 15 0.125 20 0.106 25 0.0909 30 0.0777 35 0.0664 40 0.0570 Use appropriate graphs to determine the rate constant for this reaction. Find the half-life of the reaction.
Suppose that the half-life of steroids taken by an athlete is 42 days. Assuming that the steroids biodegrade by a first-order process 5, how long would it take for 164 of the initial dose to remain in the athlete’s body?
The reaction is catalyzed by the enzyme succinate dehydrogenase. When malonate ions or oxalate ions are added to the reaction mixture, the rate decreases significantly. Try to account for this observation in terms of the description of enzyme catalysis given in the text. The structures of malonate and oxalate ions are
The uncoiling of deoxyribonucleic acid (DNA) is a first-order reaction. Its activation energy is 420 kJ. At 37C, the rate constant is 4.90104min1 (a) What is the half-life of the uncoiling at 37C (normal body temperature)? (b) What is the half-life of the uncoiling if the organism has a temperature of 40C(104F)? (c) By what factor does the rate of uncoiling increase (per C) over this temperature interval?