Aluminium has a density of 2.70 g/cm³. How many moles of aluminum are in a 13.2 cm³ block of the metal substance?

Q: temperature 0 5. °C 15. °C 25. °C vapor pressure 0.167 atm 0.195 atm 0.226 atm Use this information…

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Q: 6. Using 0.25 M phosphate buffer, pH 7.2, how much of the stock you will need and how much of…

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Q: 1. List the symmetry elements of the molecules. A B C D CH₁ H₂N en H H₂N HC HC Co Br CI 0 H CH 3 H…

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Q: 5. Sketch the Radial Distribution Function 4xr³R² vs. r² for 4s • 5s • • . 4p 4d2-2 Sp 6s бр

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Q: Perform the following calculation: g cm³ cm³ What is the answer to the calculation above with the…

A: A question based on tools in analytical chemistry that is to be accomplished.

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Q: ОН PBr3

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Q: Balance the following equations. (Use the lowest possible integer coefficients.) (a) UO₂ (s) + HF()…

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Q: 1. Given the solid below, calculate the following: a. Volume b. Density if its mass is 104.72 g.…

A: The given solid is a Cuboid. The length of the solid(l)= 5.30 cm  The width of the solid(b) = 2.5 cm…

Q: 2. 8 What is the structure of the compound which gives rise to this data? Explain your reasoning. 9…

A: Given -> Molecular formula= C11H16

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Q: In the illustration, N is color-coded as blue and O is color-coded as red. ⠀- What kind of change is…

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Q: 3. Give the name of this compound, including stereochemistry if relevant: H CI HCECCH₂-C-CH₂CH₂Br

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Q: What would the overall charge of this peptide sequence (Asp-Ala-Phe-Lys-His) at pH 12 be?

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Q: 4. Consider a reaction vessel filled with the gases, H₂, I2 and HI at 298K under the following…

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Q: 1) You have 3 moles of cyclohexene (density 0.811 g/mL, MW 82.15 g/mol) and react it with 15 moles…

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Q: How many grams are contained in 0.482 moles of Na2CO3?

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Q: A) The hydrogen bond strength increases when the acidity of the hydrogen bond donor increases. Rank…

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Q: 4) Given the following analyses of groundwater (reported as mg/L): Ca²+ = 16.5; Mg²+ = 3.1; Na = 13;…

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Q: Why are spontaneous and non-spontaneous reactions often coupled?

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Q: For the chemical reaction, 2 Al + 3 H₂SO3 H₂ + Al₂(SO4)3 what mass of sulfuric acid in grams is…

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Q: Which structural formula represents an unsaturated hydrocarbon

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Q: B. Name the following organic compounds: 11.) 12. 13. 14 Br. Br 15.) CI Br CI

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Q: Which of these two gases has the greater average molecular velocity? Flask A Flask B

A: average velocity of gas =8RTπM where  T = temperature in K and M = molar mass of gas. and R =…

Q: 4. Write in the product, including stereochemistry where relevant, for these reactions. See end of…

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Q: Determine the mass, in grams, of 0.245 moles of Pb (1 mol of Pb has a mass of 207.2 g).

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Q: Label each of these orbital designations as “possible” (exists) or “impossible” (does not exist).…

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Q: Which formula represents an unsaturated hydrocarbon? a. C5H12 b. C6H14 c. C7H16 d. C8H14

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Q: 7. nickel and sulfate 8. copper (II) and hydroxide 9. potassium and hydrogen phosphate 10 samt

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Q: An atomic absorption method for the determination of the amount of iron present in used jet engine…

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Q: stion Completion Status: Relative Abundance 100 90 80 70 60 50 40 30 20 10 0 21 Mass (amu) Consider…

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Q: B. Name the following organic compounds: 16. 17. 18.

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Q: A sample of hydrogen gas at a pressure of 1.03 atm and a temperature of 24.3 °C, occupies a volume…

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Q: A steel cylinder containing 25 kg of CCl2 F2 in the form of liquid and vapor is set outdoors on a…

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Q: A reaction has a standard free-energy change of -13.10 kJ mol-¹(-3.131 kcal mol-¹). Calculate the…

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Q: B. Name the following organic compounds: 11.) 12. 13. Br Br Br

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Q: 2) How many non-hydrogen atoms have sp² hybridization in the following molecule: NH₂ A) 0 atoms B) 1…

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.