Calculate the atomic mass for silicon given the following data for its natural isotopes: 28 Si 27.977 amu 92.23% 29 Si 28.976 amu 4.67% 30 Si 29.974 amu 3.10 % Express your answer using two decimal places.

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Q: Use the References to access important values if needed for this question. Consider the reaction:…

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Q: The following aldaric acid can lactonize to form two different products. Which ones? CO₂H НО -н H-OH…

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Q: Consider this reaction, which occurs in the atmosphere and contributes to photochemical smog: 4Fe(s)…

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Q: Consider the reaction N₂(g) + O₂(g) 2 NO(g) that has an equilibrium constant, Kc, fof 4.10 × 10-4 at…

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Q: What is the expected pH for solutions that contain the following initial compositions? a) 1.0x10-5…

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Q: 2. Write the abbreviated ground state electron configuration for each element. a) Ca b) Pb

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Q: 10. (a) Give reasons, arrange the following compounds in order of decreasing frequency of carbonyl…

A: This Question is based on IR Spectroscopy.

Q: 20) cis-4-bromo, 3-methyl, 2-pentene undergoes chlorination. Name final product.

A: 20) IUPAC name of product formed is :- 2-bromo-3,4-dichloro-3-methylpentane

Q: Draw the energy level orbital diagram for tin, Sn.

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Q: Identify the highlighted functional groups in this molecule.

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Q: Water is capable of exhibiting hydrogen bonding. Which of the following forces of attraction does it…

A: The answer is attached below-

Q: Phosphorous pentachloride decomposes according to the reaction PC15 (g) = PC13(g) + Cl₂ (g) A 15.7 g…

A: Here we have to determine the equilibrium constant of the following given reactions.

Q: 100kg/hr water is heated from 25 C to 200 C. Steam enters at 500kPa and 973.15K and leaves at 300kPa…

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Q: Modes of Separation Normal-phase chromatography Reversed-phase chromatography Ion-exchange…

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Q: Given the data in the table below, AH, for the reaction rxn IF5 (g) + F2 (g) → IF7 (g) AHᵒf…

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Q: A particular carborane has the following mass percentages: 21.30%C and 67.09%B. What is the…

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Q: Zinc metal reacts with hydrochloric acid by the following reaction: Zn(s) + 2HCl(aq) → ZnCl₂(aq) +…

A: Given, Zn(s) + 2HCl(aq) ➝ ZnCl2(aq) + H2(g) moles of Zn react = 0.32 moles moles of HCl react = 0.47…

Q: Draw the expanded structural formula of the following compounds. 1.) 3,3-dibromo-2-pentanol

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Q: Scholarship Ap X Report - Googl X NGLSync Portal X OWLv2 | Online X +…

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Q: Synthesize ethylbenzoate using benzoic acid and acetonitrile.

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Q: Equilibrium constant of borneol isomerization (C10H17OH) to isoborneol, in the gas phase at a…

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Q: Silicon having a melting point of 1412°C forms an alloy with aluminum having a melting point of…

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Q: Identify the region of the electromagnetic spectrum where the wavelength measurement of 50 μm can be…

A: Identify the region of the given wavelength ---

Q: 7 # 3 G 8 4 1 mole CH₁₂0= 1 mole Fe₂(Cro), = g Fe, (CrO₂), -9 C₂H,₂06 10. Avogadro's constant was…

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Q: Draw the amide formed when isopropylamine (CH₂CH(CH3)NH₂) (CH3CH(CH3)NH₂) is heated with each…

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Q: a) At which electrode is Cu deposited (rise or fall)? (b) The bubbles produced are the gaseous…

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Q: The product P in the following chemical reaction will be CI 1. NaN 3 P 2. Heat 3. H₂O

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Q: S    +   6 HNO3 →  H2SO4   +  6 NO2   +   2 H2O In the above equation, how many grams of water can…

A: Given,       S    +   6 HNO3 →  H2SO4   +  6 NO2   +   2 H2O   if the number of moles of HNO3 =  8.9…

Q: 1) 27 L of CO2 is initially collected at 299K. After, the temperature is increased to 323 K.…

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Q: What pressure in atmospheres is exerted by 82.5 g of CH4 in a 75.0 L container at 35.0 °C? [?] atm…

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Q: For which of the following reactions is AHxn equal to AH of the product(s)?You do not need to look…

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Q: Draw and explain the cyclic voltammogram of [Pt (p-tap) (tb cat)] in CH3CN at Pt disk electrode,…

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Q: A cell consisting of a saturated calomel electrode and a lead ion electrode developed a potential of…

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Q: If 16.7 mg of sunscreen dissolved in 25 mL of 2-propanol. After this diluted this stock solution by…

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Q: 23) trans-1,2-difluoro-ethene undergoes fluorination. Name final product. 24) 1,4-nonadiene…

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Q: Write the complete grounded-state electron configuration of Pb2+

A: Write the complete grounded-state electron configuration of Pb2+ ?

Q: Theoretical mole ratio from formula: moles of Cu per moles of CuCO3 Cu(OH)2 = 1.97.

A: Mole ratio =molar mass of particular compound /molar mass of whole compound.

Q: A sample of neon gas at 7.0 °C and a volume of 10.0 L is heated to 147 °C. What is the volume of the…

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