Which of the following values have 4 significant figures? (Select all that apply) A. 0.001562 B. 1.5620 DC. 1.562x104 D. 1562.0 E. 1562

Q: 10.3 For a linear molecule of polyethylene of molar mass 119,980 g mol-¹, calculate: (a) the contour…

A: Given data ;                       Molar mass of polyethylene (M) = 119,980 g mol-1      Now,…

Q: 5 Today chlorine is prepared from sodium chloride by electrochemical decomposition. Formerly…

A: 4 mole of HCl react with 1 mole of MnO2 Molecular weight of HCl is 36.48. Molecular weight of MnO2…

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Q: (#30) The Equilibrium Constant and the "ICE Chart" Phosphorus pentachloride gas is formed according…

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A: The Concept used in this question is from inverse square law. We know that from coulomb's law F = K…

Q: The enthalpy change for the following reaction is -92.2 kJ. Using bond energies, estimate the H-H…

A: E N2 = 945 kj/mol E N-H = 391 Kj/mol E H-H = ? enthalpy = -92.2 kj

Q: Is it possible to determine the position and energy of an electron at the same time? Why or why not?

A: Electron is negativity charged particle of atom.

Q: From the image provided, choose TWO element samples that appear to have different physical…

A: From the given elements sample of two can be choosen based on their names.

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Q: MISSED THIS? Read Section 16.8 (Pages 701-710); Watch KCV 16.8, IWE 16.9. For the following…

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Q: 11 10 HSP-03-874 9 00 8 OH 7 6 5 ppm 3 2

A: We have to assign the 1H NMR spectrum of Butan-1-ol. Introduction: Those protons which are…

Q: what intermediate is formed in the reaction below?

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Q: 3) Review the three structures provided below. (Hint: Convert to extended formula or Lewis Dot…

A: More basic the base more will be the pKa  of it and hence it will abstract protons easily.

Q: half-life of 25.3 s. How long does it take for the concentration of the reactant in the reaction to…

A: Given,  Half life time (t1/2) = 25.3 s 1---1/2---1/4---1/8 So, to fall concentration 1/8 it requires…

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Q: In the fermentation of sucrose to ethanol, Calculate how many milliliters of CO2 (at STP) would be…

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Q: Step 4: Use the Molecular Shape Table from your notes to select the molecular shape and bond angles.…

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Q: The bonds indicated (C=C) by the arrow in the following compound results from the overlap of which…

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Q: A decomposition reaction in the first order has a rate constant of 1.26 x 10-4/sec. If the initial…

A: We would use first order integrated rate law equation to solve this question.

Q: IX. a. b. Draw all possible resonance structures for the species below. Show the movement of…

A: Resonance structure: If the Lewis structure of a molecule or ion cannot explain by a single…

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Q: A 4.369 g sample of metal is placed in a flask. Water is added to the flask and the total volume in…

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Q: 5. The three structures below are common medications. i. ii. Circle the most acidic hydrogen in each…

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Q: that is 1% ionized? (This problem is worth 4 points) 2.02 x 10-4 2.02 x 10-5 1.01 x 10-4 1.10 x 10-5…

A: Given -> Molarity of CuOH = 1M -> It is ionized 1% .

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Q: Identify the statement if TRUE or FALSE  Alkanes do not undergo any addition reactions are…

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Q: Which of the following would be a valid use of the index function in Excel? O index(A$1:A$7, B2) O…

A: Index function can also be written as=INDEX(array,row_num)” to fetch a value. In case of a single…

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A: Weight of NH4Cl = 6.79 gm  Volume= 10 ml = 0.010 L (1L = 1000ml)

Q: Use the following data to calculate the molar mass of naturally occurring silicon: Isotope…

A: Average Atomic mass = M1X1+M2X2+M3X3/(X1+X2+X3) Where,  M1 ,M2 & M3 are atomic masses and X1 ,X2…

Q: Which of the following statements about the Bradford Assay is false? O The standard curve generated…

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A: A question based on general chemistry that is to be accomplished.

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Q: A certain liquid X has a normal boiling point of 105.50 °C and a boiling point elevation constant…

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Q: On the following energy diagram, identify the energy level of the cyclohexane conformation shown in…

A: In this question, we have to Identify the energy level of the cyclohexane conformation shown in the…

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A: First we would write a reaction and rate law for that reaction using the given observation.  Then we…

Q: Which of the following is a valid set for four quantum numbers? a. 4, 0, -1, +1/2 b. 2, 1, 0, -1/2…

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Q: Are the following quantum numbers allowed yes or no? If not, change the value of only one of the…

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A: Answer: This question is based on the concept of limiting reagent. Limiting reagent is the reactant…

Q: Consider a buffer that has a free amino group (X-NH2 ) with a pKa of 8.5. If the buffer is present…

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

A: Answer: Empirical formula is the formula of the compound in which all the atoms present in the…

Q: 4 Hematite, Fe₂O3, is an important ore of iron. (An ore is a natural substance from which the metal…

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Q: Which of the following is the correct order of bond strength going from strongest to weakest in an…

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Q: will UPVOTE Kindly answer the question. - Why is it important that the chromatography paper not…

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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.