The following information is given in a science supply catalog: 60,00 rubber stoppers = 500.00 grams = $4.89.Each student in a class will need 4.0 stoppers. There are 24.0 students in the class. What mass of stoppers must be ordered? What will be the cost of the stoppers?

Q: The balanced chemical equation for the combustion of propane gas is: C3H8 (g) + 5 O2 (g) --> 3 CO2…

A: Given reaction: C3H8 (g) + 5 O2 (g) → 3 CO2 (g) + 4 H2O (g) ∆G°RXN = -2385 kJ Temperature = 17.0 °C…

Q: Given a creation A₂ (g) + B₂ (g) = 2AB (g) ke for this rection 116.4 and the intestul concentration…

A: The answer to the following question is-

Q: Draw out a complete mechanism for imine formation from the reaction of 4-iodoaniline will be…

A: The mechanism of the reaction is as follows:

Q: 19/22 refers to a joint that is

A:

Q: 5. Given: 2 Cl2(g) + 2 H₂O (g) 4 HCI (g) + O2(g) Ke or Keq=3.2 x 10-14 What is the concentration of…

A: Note: As per our guidelines, we are supposed to answer only one question when multiple questions are…

Q: Give the Lewis structure of the following compound by indicating all bonds and lone pair electrons…

A: Lewis structure of a molecule is simplest structure, in which all the bonding pair of electrons and…

Q: (u) Is the following sugar digestible by mammals? Explain. CH2OH OH OH CH₂OH H ОН OH ОН ОН H OH ОН…

A:

Q: The ideal gas law can be considered a correlation that is based on kinetics theory but incorporate…

A: Ideal gas equation is given by: PV=nRT

Q: Calculate the Gibbs free energy change (∆GRXN) in kJ that occurs when one mole of solid iron (III)…

A: Given,  Unbalanced reaction is :  Fe (s) + H2O (g) --> Fe2O3 (s) + H2 (g) Calculate the Gibbs…

Q: The enthalpy for a certain process is 121.9 kJ/mol and the entropy for the process is 454.8 J/K.  At…

A: We are given that, ∆H = 121.9 KJ/mol = 121.9 × 10^3 J/mol  ∆S = 454.8 J/K

Q: ts Which one of the figures below clearly indicates (without ambiguity) that the density of the…

A: Density= mass /volume

Q: = Unknown compound Z gives the following spectroscopic data. It was made using a reaction in these…

A:

Q: Examples of strong bases and their ionization reactions are included in Table 15.3. Both KOH and…

A: Based on the ionization reaction we can explain the ability to accept hydrogen ions.

Q: ● ● Calculate the amount of each chemical required to make a 10x stock of TBE in a final volume of…

A: We know that, V×M = number of mmol  Where V = volume & M = molarity of the solution.

Q: Air is approximately 80 mol% Nitrogen (M = 28kg/kmol) and 20 mol% Oxygen (M = 32kg/kmol). Consider a…

A: It is given that before the addition of hydrogen, pressure in container = 2 atm After addition of…

Q: 3.) The same solution in Question 17 has [H+] = 3.2 x 10-10. What is the concentration of OH-?…

A:

Q: 3. Draw the form of the amino acid that predominates at pH 11. G H₂N-CH- pka = 9.60 CH₂ pKa = 8.95 C…

A:

Q: A flask has a total pressure of 6.8 atm. The partial pressure of Ne is 450 torr, the partial…

A:

Q: Which of the following statements appropriately describes the colors in each diamond of the chemical…

A: Given colours of chemical hazard label are yellow, red ,blue and white.

Q: How many of the following molecules are capable of exhibiting the Hydrogen bonding intermolecular…

A: we have to find the number of molecules that have hydrogen bonding intermolecular forces

Q: A 1.00 L buffer solution is 0.050 M in HC7H5O2 and 0.200 M in LiC7H5O2.  Calculate the pH of the…

A: Given: A 1.00 L buffer solution is 0.050 M in HC7H5O2 and 0.200 M in LiC7H5O2 The Ka for HC7H5O2 =…

Q: 2. Ni(P(0-C6H4Me)3)2Cl2 is strongly paramagnetic, while Ni(PMe3)2Cl₂ is diamagnetic see the…

A: PR3 ligands are known to exhibit a weak π-acid character when forming an organometallic compound.…

Q: Copper (II) cation forms a complex ion with four ammonia molecules per the following balanced…

A:

Q: At 25°C, the formation of ammonia from its elements results in a decrease in entropy (∆SRXN = -197…

A: we have to calculate the value of ∆SUNIV

Q: 20 1) How ma THREE

A: Definition of allyl radical: An allylic radical is a resonance-stabilized radical in each of the two…

Q: Part C: Provide any intermediate and final product for Each of the following reaction sequences 1)…

A:

Q: What functional group connects an open-chain monosaccharide into a ring structure? O O O ester…

A:

Q: Question 3 The pH of an aqueous solution is 4.22. What is [H] for this solution? O-0.63 M O 1.7x104…

A:

Q: Draw the structure of the hydroxyaldehyde product from the self-aldol reaction of each of the…

A: Aldol condensation: The alpha hydrogen of carbonyl compounds is acidic in nature and it is removed…

Q: (g-h) (i-j) (k-1) (m-n) (0) (p) & NH Br (q) CH3- 1. KOH 2. NaNH, NH3 excess CH3OH CI CI +H CH3OH, H+…

A: According to the bartleby guidelines for the multipart question, I can solve only first three…

Q: he second law of thermodynamics favors     A. processes that have zero entropy of the universe…

A: The given problem is based on the laws of thermodynamics.

Q: A heat engine performs a thermodynamic cycle. Its internal energy depending on the typle of process.

A:

Q: (A) Coz E ✓C0267 8. (B) 1. NabEt, Ero 2. H₂O, A ericana Co₂Lt (D)

A:

Q: What are the products A and B formed in the following reaction sequence: BIU FO OME LDA, ET₂0 2)…

A:

Q: Which of the following combinations of n and I represent real orbitals and which are impossible?…

A:

Q: What is the molar solubility of mercury (I) fluoride?  Ksp = 3.1 x 10-6.

A:

Q: 8. In the titration of nitrite using KMnO, if 20.00 ml of nitrite is required to react with 12.85 ml…

A: Here we are required to find the Molarity of NaNO2.

Q: 9) In the proton NMR, in what region of the spectrum does one typically observe hydrogens bound to…

A: To solve this problem we have to know about the region of spectrum of proton NMR.

Q: Classify each statement as a cradle-to-cradle process, a cradle-to-grave process, or both…

A: *Cradle-to-cradle = the product which can be recycled or reused *Cradle-to-grave=the product which…

Q: Draw the structure of the important peaks in the mass spectrum of C9H8O (unsaturation = 6) Major…

A: Mass spectrometry is one of the best techniques for analyzing the structure of a molecule and…

Q: 2. Calculate the pl for the amino acid shown below: GAL H₂N-CH-C pKa = 9.60 CH₂ O OH pKa = 3.65 OH…

A:

Q: A sample solution contains two unknown ions. A student did a series of tests on the solution, in the…

A:

Q: Which refluxing apparatus is set up to keep moisture out? < OC OB and C OA O B T none

A: If we have to keep the moisture out of the reaction, we must use a drying tube and the inlet adapter…

Q: What is the calculated value of the cell potential at 298 K for an electrochemical cell with the…

A:

Q: Calculate the pH of a buffer solution formed by mixing 300.0 mL of 0.25 M NH4Cl with 250.0 mL of…

A: pOH of a buffer is calculated using the following equation pOH = pKb + log[salt][base] In the given…

Q: The ideal gas equation is PV = nRT where P is pressure, V is volume, n is the number of moles, R is…

A:

Q: What is the calculated value of the cell potential at 298K for an electrochemical cell with the…

A:

Q: A voltaic cell is constructed from a standard Al3+|Al half cell (Eºred = -1.660V) and a standard…

A:

Q: Select the reagents from the following list which would perform the following transformations in the…

A:

Q: If the ?aKa of a monoprotic weak acid is 2.2×10−6,2.2×10−6, what is the pHpH of a 0.27 M0.27 M…

A: we have to calculate the pH of the given monoprotic weak acid

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.