1. The plates were "pre-baked" at >120°C. Why is this step necessary?

Q: 3. A student ran the following reaction in the laboratory at 657 K 2 NH3 (g) ( N₂ (g) + 3 H₂(g) When…

A: In the given reaction ammonia decompose into nitrogen and hydrogen. The balanced chemical reaction…

Q: hsidering structures below, which of the following statements is true? 유 1 H-C-O-CH₂2 CH₂OH ||…

A: we have to identify the correct statement with respect to the given structures

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Q: Y Part A As a technician in a large pharmaceutical research firm, you need to produce 450. mL of…

A: part A: 450. ml of 1.00 M potassium phosphate buffer = 0.450 L * 1.00 mole / L = 0.450 mole  Let…

Q: A vibrational energy level of of a diatomic molecule AB has an energy of 1.25x10-19 J, what is its…

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Q: ) Why is the ionization energy required to remove an outer electron from Na+ so much greater than…

A: a) Electron configuration of Na+ ion is 1s2 2s2 2p6  and electron configuration of Na is 1s2 2s2 2p6…

Q: The reaction between carbon monoxide and hydrogen gas is given below: CO(g) + 3 H₂(g) → CH4(g) +…

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Q: O methyl O ethyl O propyl butyl

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Q: 48 What is the rate-determining step of a reaction? Give an everyday analogy to illustrate the…

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Q: its possibly incorrect

A: Given that, The vapour pressure of pure pentane is p01 = 624 torr. The vapour pressure of pure…

Q: Consider the following: CH3CH₂CH=CHCH₂CH3 1 CH3CH=CHCH₂CH₂CH3 ||| II and III OI and III OII and IV…

A: We have to find the structures that represent the same compound.

Q: A cucumber is placed in a concentrated salt solution. What is most likely to happen? Water will flow…

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Q: When 1 mol of a nonvolatile, nondissociating solute is dissolve 3 mol of volatile solvent, the ratio…

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Q: The iodide-catalyzed decomposition of hydrogen peroxide is thought to proceed by a four-step…

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Q: Using thermodynamic data from the Thermodynamic Data table, calculate AG° at 25°C for the process 2…

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Q: An unknown substance shows a molecular ion peak at m/z = 170 with a relative intensity of 100. The M…

A: Dear student since you have asked multiple questions but according to guidelines we will solve 1st…

Q: uestion 3 [20] 3.1 Propose structures for compounds that fit the following data: a) A ketone with M+…

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Q: Br -N H

A: Given compound is :  Draw all possible resonance structures for the following molecule ?  Resonance…

Q: Which statement is no of Brownian motion? It is independent of temperature. It is due to the random…

A: Brownian motion is the random movement of particles in a fluid due to their collisions with other…

Q: 4.5 Peak G H | J K 2-butanol Spectrum 3 4.0 G 3.5 3.0 H -2.4 -2.4 2.5 2.0 1.5 J <1.0 ≥ JU 1.0 3 K…

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Q: Of the following, a) melting Ob) sublimation c) condensation. d) boiling 15 dil CAULICHTING e) All…

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Q: How many C-C sigma bonds are in the molecule with the following condensed formula? (CH3)2CHOCH3

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Q: Explain the meaning of  atom, matter, and energy

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Q: 13. At 25 °C, 4 mg of PbSO4 will dissolve in 100 cm³ of pure water. Calculate Ksp of PbSO4.

A: Please note- As per our company guidelines we are supposed to answer only one question. Kindly…

Q: The polymerization of vinyl chloride (1.6x105M) is carried out using hydrogen Peroxide (0.4x10 M),…

A: Introduction to Polymerisation The process of creating polymers is called polymerization. Following…

Q: Calculate the pH of a solution prepared by mixir (Ka-6.46 x 105) with 5.00 mL of 0.200 M NaO…

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Q: 2 Ag+ (aq) + fe(s) → Fe²+ (22) + 2 Agis) €₁ = ? 9 +2.04 V +1.24 V 6 c) +0-36V d) -0.36V el -1.24V

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Q: Which of the following species is not a resonance structure of the top species?

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Q: Which of the following is relatively most acidic?    acetic acid            hydronium ion…

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Q: An alcoholic beverage with a density of 1.046 g/mL has an ethanol (C2H5OH, FM 46.068)  concentration…

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Q: . What is the minimum radius for the host metal for a H atom (radius 37 pm) to fit in a tetrahedral…

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Q: 2 The solubility of O₂ in water is 0.590 g/L at an oxygen pressure 15 atm. What is the Henry's law…

A: Solubility of oxygen, S = 0.590 g/L Pressure of oxygen gas, PO2 = 15 atm Henry's law constant, KH =…

Q: The vapor pressure of diethyl ether is 532 mm Hg at 24.8°C. The AH vapor of diethyl ether is 26.0…

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Q: Qf The Pvc polymer were obtained in the thermal initiation (0.01 M) of Vinyl chloride (8.3 M) at…

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Q: 9. Caffeine has a molar mass of 194.19 g/mol. Calculate the mass, in grams, of 0.450 moles of…

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Q: If a snail crawls at a rate of 425.96 cm/s, what is its speed in miles per hou the unit. Hint:…

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Q: Compound A, I would like to ask about the 180° turn in upper C -CH₂CH₂. -OH and -H rotate 90°…

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Q: Indicate the stereochemical relationship (identical, enantiomers or diastereoisomers) of the 2…

A: Here we are required to find the stereochemical relationship of the two compound.

Q: Calculate the moles of ammonia present in a 7.040 g sample of ammonia, which has a molar mass of…

A: Given, mass of ammonia = 7.040g  Molar mass of ammonia = 17.030gmol-1  Moles of ammonia = ?  Note :…

Q: Phosphate buffer solution, which is used in preparing the BOD dilution water is prepared by…

A: The phosphate buffer is prepared by adding 3 different sources of free phosphate(PO43-) which are:…

Q: Name each compound according to the IUPAC system: 1. CH3-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH3…

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Q: The compound shown here is classified as what type of organic compound? HỌC-CH, COCH,CH A) ether B)…

A: Different functional groups in organic chemistry are, Note: Here, R or R' is a alkyl group. Aldehyde…

Q: Q1) How can you tell, by looking at the refluxing set-up, that the reaction between n-propanol and…

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Q: # 65 of 214 A2 equivalence 25.00 mL of a solution containing 0.1333 M ammonia (K = 1.76 x 10-5) is…

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Q: Which of the following species is/are not a resonance form(s) of the anionic species in the box? S S…

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Q: After dissolving our impure napthalene in methanol the solution looks red what could have happened

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Q: Below are values for the standard reduction potentials for various species of the metal, M: MO₂2²+ +…

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