(SHOW CALCULATIONS) The mass of a sample is 8.2 x 10-2 milligrams. Express that mass in kilograms with the proper number of significant figures. In your calculations, be sure to show the conversion factor.

Q: b. Which of the following is the structure of acetic anhydride? si OH c. When 4-ethoxyaniline reacts…

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Q: Circle the most basic electrons in guanosine.

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Q: pka = 2.20 HO HO pka = 10.07 O Incorrect 9.82 Incorrect 6.84 Correct: 10.07 Incorrect 3.86 Incorrect…

A: When pH > pKa, all the carboxylic acid functional groups in 0.4 M solution get ionized and…

Q: If you had a 0.00550 M solution of HCIO4 (a strong acid) what would be the pH of the solution?

A: HClO4 is a strong acid therefore it dissociates completely as  HClO4 + H2O →ClO4- + H3O+

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Q: Correct each molecule in the drawing area below so that it has the structure it would have if it…

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Q: uppose the galvanic cell sketched below is powered by the following reaction: 2 Fe(s) + 3 Pd…

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Q: (b-ǝb)ul 20 40 Pseudo-First Order Kinetics 60 80 Time (min) 100 y = -0.0232x+0:3842€ R²=0.903 120…

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Q: how to use the equation of the line to calculate the arrhenius pre-exponential factor a   y =…

A: Equation : y=-1.3376×104 x+ 34.073

Q: A sample compound is 46.7% oxygen, 51.7% chlorine, and 1.5% hydrogen. What is the empirical formula…

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Q: The Ecell = 0.135 V for the reaction 31₂(s) + 5Cr₂O7²-(aq) + 34H*(aq) ? 6103¯ (aq) + 10Cr³+ (aq) +…

A: Given- 3I2(s)+5Cr2O72-(aq)+34H+(aq) ->>6IO3-(aq)+10Cr3+(aq)+17H2O [Cr2O72-]=0.027M…

Q: -- atm 13, At 25 °C and 1 atm of CO2 pressure, the solubility of CO2 (g) is 149 mg CO2/100 g water.…

A: Given,

Q: 1. At a certain temperature, the value of K for the following reaction is 4.2 x 10. N₂(g) + O₂(g) →…

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Q: Construct the expression for Kc for the following reaction. CO(g) + 2 H,(g) CH₂OH(g) Drag the tiles…

A: For a reaction aA (g) + bB(s)   <------>  cC(g) + dD(g), the equilibrium constant is given by…

Q: The formation of methanol (CH3OH) is important to the processing of new fuels. At 25.°C, Kp = 22,389…

A: At Temperature , T1 = 25°C Kp =22389 ∆H°rxn =-123.0 KJ/mol=-123000 J/mol (1 KJ=1000 J) Temperature ,…

Q: . CH3 OH 1. (R)-CBS reagent 2. H2O II OH .... III НО ОН IV

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Q: Question: In a chemical reaction, a solid substance X is converted into a gaseous substance Y. The…

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Q: QUESTION 5 Which of the following is a covalent (molecular) compound? Oa. HCI b. LICI Oc. NaCl d.…

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Q: Which method could you use to encourage more product, NO2, to form from the reaction below? N₂(g)…

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Q: How many milliliters of 15.6 M HNO3 solution are needed to make 1.0 L of 0.5 M HNO3?

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Q: Nr Table 1 shows the relative viscosity, nr for a polyisobutylene with the molecular weight of…

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Q: Consider these reactions: Reaction 1: H2(g) + Cl2(g) 2HCl(9) AH = -184.6 kJ Reaction 2: 20F2(g) →…

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Q: 62) What would be the major product of the following reaction? OH Br2, PBr3 H₂O 2 NH3 Br a) I ) III…

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Q: It takes 242. kJ/mol to break a chlorine-chlorine single bond. Calculate the maximum wavelength of…

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Q: 5,6

A: 5. We have to tell why water is a good solvent. The given options are Most polar and charge…

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Q: Draw the expected product when the following compound is oxidized with chromic acid

A: The compound given is,

Q: 6. Consider the following equilibria: 1: Ca²+ (aq) + 2OH- (aq) 2¹2 H₂O(1) H3O*(aq) + OH-(aq)___…

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Q: Subject :- Chemistry   Identify the geometry of each atom in the structure

A: Cycloserine is a drug belonging to the class of immunosuppressants. Its compound structure is as…

Q: Give only typing answer with explanation and conclusion the mass of an Fe-56 nucleus is 55.92067 amu…

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Q: Which compound(s) will produce only TWO signals in their ¹H NMR spectrum? Select ALL that apply.…

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Q: Which of the following resonance structures is incorrectly drawn? 5-6-6-6-3 B Select an answer and…

A:

Q: A  150. g sample of KCl is dissolved in enough water to make 1.00 liter of solution. How many…

A: Mass of KCl = 150 g Molar mass of KCl = 74.55 g/mol   Moles of KCl =  mass / molar mass…

Q: Calculate the enthalpy and entropy change, under standard conditions, for the combustion of ethane,…

A: Enthalpy change= Sum of enthalpies of formation of products - sum of enthalpies of formation of…

Q: When 68.7 grams of N₂H4 (32.0 g/mol) are reacted with 108 grams of O2 (32 g/mol) according to the…

A: Mass of N2H4 = 68.7 g Molar mass of N2H4 = 32.0 g/mol Mass of O2 = 108 g Molar mass of O2 = 32.0…

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.