1- Round 28.468 x 10 into 3digits.

Q: A sample of argon initially has a volume of 4 L at 25°C. What is the new volume if the temperature…

A: Given Volume of gas = 4.0 L = Vi Temperature of gas (initial ) Ti = 25 0C = 273+25 = 298 K Final…

Q: Write the empirical formula for at least four ionic compounds that could be formed from the…

A: The ionic compound are those compounds which are formed from the cations and anions and they are…

Q: Measurement of the reaction kinetics (kx/kH) for the following transformation gave the value of p =…

A: We have to write the reaction mechanism for the given organic reaction:

Q: Which of the following formulae is consistent with a molecular ion of m/z 73 in a mass spectrometry…

A: We have find out the formulae is consistent with a molecular ion of m/z 73 in a mass spectrometry.

Q: 33 $ 串 Fribourg, Department of Chemistry # s for the last electron in He are: {n, I, mi, ms} ted? 1…

A: Quantum numbers: The set of numbers used to describe the position and energy of the electron in an…

Q: 11. Ozone naturally decomposes to oxygen via photodecomposition. 2 03(g) →3 0₂(g) AErxn=-284.4…

A:

Q: Which is the strongest acid? O CH3NH2 O CH3OH

A: Given, Which is the strongest acid ? CH3NH2 CH3OH Note:  Greater the stability of conjugate base…

Q: A student performed the identical experiment to isolate Fe, NaCl, and SiO2 in a mixture. They…

A: Mixtures can be physically separated by using methods that use differences in physical properties to…

Q: 5. Provide reagents/conditions to accomplish the following syntheses. Several steps are required in…

A: In this synthesis, we will Synthesized the final product from the starting material by using…

Q: Question: The absorption spectrum of a dye is shown. What color will the dye appear to be?…

A: •Given:-

Q: Which substance in the following reaction has undergone oxidation? 2 MnO4^-1 (aq) + 5 C204^ -2 (aq)…

A: -> In oxidation process there is increase in oxidation number but in reduction oxidation state…

Q: A solution contains both copper(II) nitrate and lead(II) nitrate. What substance could be added to…

A: This question is based on selective precipitation of ions .

Q: An unknown compound has a molar mass of 215.22 g/mol.  In the lab, the empirical formula was found…

A: Given, the empirical formula of the compound: C2H3O the molar mass of the compound = 215.22 g/mol We…

Q: 2. Draw the repeat unit of the following substituted polyphenol/formaldehyde polymerization:

A: A polymer is a large molecule that is formed by the repetition of small units called a monomer, and…

Q: 19 1. 2. a + KOH Proton transfer b Lewis acid/base c= Radical chain substitution H₂O Submit Answer…

A: There are two types of nucleophilic substitution reaction: Unimolecular nucleophilic substitution…

Q: If 50.5 g of KBr are dissolved in 400.0 g of water at 25.0 °C in an insulated container, a…

A: Given that, The initial temperature of the solution is T1 = 25oC = (273+25) K = 298 K, The total…

Q: 6) Which one of the following carbocations is NOT expected to rearrange? (a) (b) (d) CH₂ CH3 CH₂ CH3

A: -> Rearrangement in carbocation occur only when there is formation of more stable carbocation…

Q: Predict the direction of the following reaction. Approximate pKa values in water are provided. pKa…

A: Acid is substance which release hydrogen ions when dissolved in water. PKa is inversely proportional…

Q: Heptane and water do not mix, and heptane has a lower density (0.684 g/mL) than water (1.00 g/mL). A…

A: Since heptane and water do not mix, we can assume that they form two separate layers in the…

Q: An analysis was conducted to determine the potability of a 35.0-mg sample of tap water. The results…

A: The potability of the water can be calculated by measuring the concentration of lead in ppm.

Q: Which of the following gives rise to a prominent peak in the mass spectrum corresponding to 18 mass…

A: we have to select the compound that shows (M+-18) signal in the mass spectrum

Q: Run-1 Run-2 Run-3 Run-4 Average time(s) [H₂O2] (M) [I-](M) 210.6 74.3 314 82 Quantity [Na₂S₂O3]…

A: Use the following formula for average rate of disappearance of S2O32- . Averate rate of…

Q: The table gives the concentrations of C,H,O(g) as a function of time at a certain temperature for…

A:

Q: A raindrop has a mass of 50. mg and the Pacific Ocean has a mass of 7.08 × 10²0 kg. Use this…

A: Mass of raindrop = 50 mg  Mass of Pacific Ocean = 7.08 x 1020 kg

Q: 116. In a conductivity cell of a cell constant 0.003 cm¹ concentration of 0.01 M solution of acetic…

A: Given: Cell constant = 0.003 cm-1 Resistance, R = 20 ohm

Q: 11. Question: Chapter: 2 Lesson: 1 Green light of wavelength 516 nm is absorbed by an atomic gas. 1.…

A: Given Wavelength= 516 nm

Q: If a sample of 131La goes from 450 picocuries to 100 picocuries in 185 minutes, what is its…

A:

Q: Provide the missing curved arrow(s) to show the last step in the mechanism. H,C. CH3 H CH3 H CH3…

A:

Q: Formula H3PO4 P₂04 NaNO3 CuBr₂ HBr Fe(OH)2 CO₂ Name Phosphoric Acid Explain how you found the name…

A: The compounds given are P2O4, NaNO3, CuBr2, HBr, Fe(OH)2, CO2

Q: How many grams of BaSO4 is produced when 225g of Ba(NO3)2 is reacted with aluminum sulfate? Use…

A:

Q: What would be found in an IR of this compound?

A: For a molecule to be IR active, there must be a change in the dipole moment of the molecule during…

Q: The resistance of a 0.008 mol dm-3 solution of NaCl (aq) at 300 K was found to be 2.75 x 10³ Q. In a…

A: Molar conductivity is the conductance property of a solution containing one mole of the electrolyte…

Q: It is found that 122 mL of canola oil weighs 112 g. What is the density in grams per milliliter of…

A: Given data, Mass of canola oil = 112 g Volume of canola oil = 122 mL

Q: Portable hot packs are available for skiers and other people engaged in other outdoor activities in…

A: The balanced chemical equation given is  4 Fe (s) + 3 O2 (g) → 2 Fe2O3 (s)  Mass of iron = 200 g…

Q: How many atoms of tritium are in 1 kg of tritium water ³H₂O?

A: Number of mol = Mass/molar mass Number of atoms in 1 mol = 6.0224 x 1023

Q: 2. Define the terms and, and give an example each. a. Strong Electrolyte allow large amounts of…

A: The answer for this problem is provided below in great details within the attached figures.

Q: a. At pH 7, which groups are predominantly deprotonated? none of these groups are depr b. At pH 7,…

A: The deprotonation of the acidic proton depends on the pH of the solution. If the pH of the solution…

Q: -ikx +Be an Consider the operators d/dx and d²/dx². Is y(x) = Ae¹kx eigenfunction of these…

A: Eigen function of an operator is that upon operating on a function, produces a constant times the…

Q: 33) Which one of the following reaction is NOT an example of ipso-substitution? (a) CI OH (b) (c)…

A: :Ipso-attack is mainly given by nucleophile in nucleophilic substitution reaction.

Q: If seawater has a density of 1.03 g/cm³, what is the volume of 5800 g of seawater? cm3

A: Given -> Density = 1.03 g/cm3 Weight= 5800 g

Q: The C4-C5 carbon-carbon bond in the following molecule results from the overlap of which orbitals…

A: During orbital hybridization, the mixing of atomic orbitals takes place to form new orbitals known…

Q: Palladium acts as a catalyst for the synthesis of carbon dioxide from carbon monoxide and molecular…

A:

Q: electron within a region. To describe that region, we need four quantum numbers Quantum number…

A: Quantum numbers: The set of numbers used to describe the position and energy of the electron in an…

Q: A student mixes 0.1 L of a 1.2x10-2 mol/L solution of zinc nitrate, with a 0.1 L of a 6.0 x 10-3…

A: In this question we have to tell that , if we mix both the solution of NaOH and Zn(NO3)2 ,Will…

Q: San Diego Bay is polluted due to leaching of hydrocarbons from old creosote pilings. If there are…

A: We have find out the steady state hydrocarbon level expected in the bay.

Q: Which of the following changes will increase the total frequency of collisions, both effective and…

A: When on particle interact with other particle reaction takes place dueto collision,it is of two…

Q: Ice at 0.0 °C is placed in a Styrofoam cup containing 381. g of a soft drink at 15.8 °C. The…

A: To determine the mass of ice that has melted, first of all, the energy that has been liberated by…

Q: Select the two isotopes of nitrogen-15. N -16 N714 F2− phosphorus-15 O -15 O+ O815 carbon-13 N815

A: We have to select the two isotopes of nitrogen-15. The given options are N-16, N714, F2-, P-15,…

Q: If the pressure of an ideal gas increases, what will happen to the volume of the gas? O It…

A: According to Boyle's law,  At constant temperature (T) & moles of gas (n) pressure of a gas is…

Q: CH3CH=CH₂ + H - Br H₂O2

A: addition of HBr with unsymmertrical alkene give anti-markovnikov addition i.e the hydrogen is…