first order reaction initially contains 4.80 × 10²⁰ molecules. If the reaction has a half-life of 20.0 minutes, how many molecules remain unreacted after 80.0 minutes?

Q: The chemical formulae of some acids are listed in the first column of the table below, and in the…

A:

Q: C2H6 breaks down into 2 radicals CH3 at 700C, K=1.98H^-1 a) what is the order of the reaction,…

A: The rate constant for the dissociation of  is given to be  at . We are required to find out the…

Q: This is a ATR spectrum. In which caffeine/PVA films were measured. Line a) correspond to a pure pva…

A: The behavior you described in the ATR spectrum of the caffeine/PVA films suggests an interesting…

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: Complete the following reaction by writing the name of the product. 8. Ni or Pl H₂ ?

A: Reagent  - H2 and Ni or Pt are strong reducing agent which reduces aldehyde to primary alcohol and…

Q: 6. A solution contains 0.67 M hydrofluoric acid (HF) and 15.0 x10 M hydrochloric acid (HCI).…

A: To calculate the degree of ionization of hydrofluoric acid (HF) in the presence of hydrochloric acid…

Q: c) What will be the product in the following reaction? CH3 das. i KOH/methanol CH,=CH-C-CH,…

A: An extension of Michael addition is called Robinson annulation. This reaction is used in organic…

Q: A student wishes to make a buffer that has a pH of 4.65.  The student has HNO2 and NaNO2.  Nitrous…

A: A buffer solution is the mixture of weak acid and its conjugate base. It is also formed by the…

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: Suppose the galvanic cell sketched below is powered by the following reaction: Fe(S)+2 AgNO3(aq) →…

A: A question based on electrode potential. An electrochemical cell is represented using that the…

Q: O: From the following structures, select a reasonable resonance contributing structure for the…

A: Resonance structures are sets of Lewis structures that describe the delocalization of electrons in a…

Q: Urea is an organic compound widely used as a fertilizer. its solubility in water allows it to be…

A: Urea, also recognized as carbamide, is an organic compound with a chemical composition of CO(NH2)2.…

Q: The level of concentration of sulfur oxides (SOX) in the exhaust gases from glass furnaces is…

A: The concentration of sulfur oxides (SOx) in the exhaust gases from glass furnaces is influenced by…

Q: 4. In the reaction below, the ketone oxygen is 180, rather than the more common ¹60 isotope. The…

A: The question is based on the concept of organic reactions.we need to correctly explain the formation…

Q: Most of the sulfur used in the United States is chemically synthesized from hydrogen sulfide gas…

A: Hydrogen sulfide gas reacts with dioxygen gas to produce gaseous sulfur dioxide and water.Reaction…

Q: QUESTION 9 The solubility of potassium chloride is 36 g/100 g water at 25 °C. Suppose that a…

A: Saturated solution has the right amount of solute dissolved in it such that no more solute can be…

Q: 2.50 L of a 0.300 M

A: Given: pH of solution                                               = 8.74Kb of ammonia…

Q: Calculate the lowest Bohr orbit for Hydrogenic Cabon. (Express the value in terms of do.)

A: The lowest Bohr orbit for a hydrogenic carbon atom can be calculated using the formula for the Bohr…

Q: Organic chemistry HW A 3D representation of a cyclohexane (C6H12) molecule, a cyclic compound used…

A: If carbon is linked to other atoms through single covalent bond then it's hybridization is sp3

Q: H₂C CH3 H3C Br Br: Br₂ CH₂Cl₂ H3C Br Electrophilic addition of bromine, Br₂, to alkenes yields a…

A: It is based on the concept of reactivity of alkene.  Here we are required to show the flow of…

Q: 16) A solution is made by combining 75.0 mL of 0.0040 M Na₂SO4 and 25.0 mL of 0.080 M AgNO3.…

A: To calculate the final concentrations of all four ions in the solution, we need to consider the…

Q: Question: For CH3CH2OH + 3 O2 --> 2 CO2 + 3 H2O, what mass of CO2 (in grams) forms if 21.7 g of…

A: Given,The reaction:CH3CH2OH + 3 O2 →2 CO2 + 3 H2Omass of CH3CH2OH = 21.7 g

Q: A 3D representation of a cyclohexane (C6H₁2) molecule, a cyclic compound used in the manufacture of…

A: If Carbon linked to other atoms through single covalent bond then it's hybridization is sp3  If…

Q: Write the name of the coordination compound (1st row). If any, show all the possible structural,…

A: [Pt(NH3)4(OH)2]SO4 The oxidation state of Pt is x , NH3 is neutral ligand and the oxidation charge…

Q: Identify the product of the given reaction. O O O NO₂ Cl NH₂ NH₂ NH₂ NO₂ NHNH, NO₂ -NO₂ -NH₂ -NH₂…

A: Benzene chloride is a poor substrate for nucleophilic substitution reactions. If a nitro group is…

Q: A chemist prepares a solution of sodium carbonate (Na₂CO,) by weighing out 50.7 mg of sodium…

A: Concentration in g/L = mass of Solute/Volume of solution 1 g = 103 mg  1 L = 103 mL

Q: scientist needs to prepare an acetate buffered solution at pH 5.0. What is the final concentration…

A: pH = 5.0 pKa = 4.76 Final concentration of buffer = 25mM

Q: 10. We know that when a system in chemical equilibrium is disturbed by a change in temperature,…

A:

Q: 4. Choose and explain which has a. the higher boiling point: 1-bromopentane or 1-bromohexane? b. the…

A: Van der waals force strength depend on surface area. Higher the surface area, higher the strength of…

Q: 14k. Which of the following is the least reactive toward addition of a Grignard reagent? je th |||…

A: Less bulky the carbonyl compound is, more is the reactivity of Grignard reagent with it.

Q: if the peak at about  212nm is redshifted at higher caffeine concentrations...is that mean an…

A: The redshift of the peak at about 212nm in the UV-Vis spectrum of caffeine with higher…

Q: The boiling point of a substance tends to increase as the strength of intermolecular forces between…

A: Boiling point increases with increase in strength of intermolecular force.

Q: What is the IUPAC name for the compound shown?

A:

Q: What other substrates can be used to produce vinegar?

A: Vinegar is acetic acid solution, chemical formula of acetic acid is CH3COOH

Q: A solution is prepared at 25 C that is initially 0.15M in chloroacetic acid (HCH,CICO,), a weak acid…

A:

Q: 15.34 Coriolic acid, isolated from the hearts of cows, is of interest because of its ability to…

A: Coriolic acid, isolated form the hearts of cow, is of interest because of its ability to transport…

Q: Which of the following are actual "ideal gasses"? Choose them all. Ar 69 Ne H₂O N₂ F₂ NaCl All of…

A: We have to find ideal gases among the given gases.

Q: Consider the hypothetical reaction 2D+3E A+B+2C where the rate law is Rate -- k[A][B]¹ An experiment…

A: Note: We are authorized to author only typed solution , kindly follow the solution below: Initial…

Q: Use the References to access important values if needed for this question. The wavelength of a…

A:

Q: Consider the skeletal structure in line-angle (line-bond) mode of 1-isopropyl-2-methylcyclohexane.…

A: Carbon atom can only form four covalent bond.

Q: a) 11. NaCl solution (25 mL) was mixed with Ag (22 ml, 0.05 M). Calculate the ppm of CI (CI=35.5…

A: 11) Volume of NaCl solution = 25 mL Molarity of AgNO3 solution =0.05 M Volume of AgNO3 solution= 65…

Q: Which of the following statements is correct? The heaviest known element that occurs naturally is…

A: Transmutation refers to the process of transforming or converting one substance into another. It…

Q: At 88°C, a 1.75 mol sample of nitrogen dioxide (NO₂) was placed in a 1.00-L flask. It dissociated to…

A: The given equilibrium reaction is .The temperature is T = 88°C = (273+88) K = 361 K.The volume of…

Q: Magnesium oxide can be made by heating magnesium metal in the presence of the oxygen. The balanced…

A:

Q: © Macmill Maxwell Select the correct IUPAC name for the cycloalkane: Br. The IUPAC name is: OOOO…

A: According to IUPAC Nomenclature, Name of alicyclic compounds are obtained by adding prefix cyclo to…

Q: Consider the following choices when answering questions 86-89. b) c) P 808080 080808 808080 c.…

A: A question based on mixture of compounds. 5 pictures are given that are to be distinguished based on…

Q: A 29.9 mL sample of 0.253 M dimethylamine, (CH3)2NH, is titrated with 0.292 M hydroiodic acid. (1)…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: 20) How many a-cleavages are possible for this molecule? 'N

A: We have find out the answer

Q: C1: 5: The molecule below is cholesterol. For each of the eight numbered carbons identify whether…

A: Chiral carbon is carbon which has all four different groups attached to it.

Q: Identify the class type of compound shown: NaCl Strong Base Strong Acid O Weak Base Neutral O Weak…

A: Strong acid + strong base = neutral saltStrong acid + weak base = acidic salt Weak acid + strong…