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Q: What is the pH of a solution with a hydronium (H3O+) concentration of 10-4 M? Is the solution acidic...

A: Note : Since you have posted multiple questions, we are entitled to answer the first only. Please re...

Q: The number of atoms per unit cell in HCP structure is ....atoms 4 6. 8.

A: The number of atoms in the hcp unit cell is 6. 3 atoms are placed in the middle of the unit cell. Th...

Q: Which are acceptable Lewis diagrams for the species indicated: (See attached image)

A: Lewis’s structure: Lewis’s bonding theory is based on the octet rule. The Lewis structure is a simpl...

Q: A sodium hydroxide solution contains a small amount of sodium carbonate as a result of contamination...

A: When Phenolphthalein is used as indicator: NaOH is completely neutralised but Na₂CO3 iS Converted in...

Q: If you continue to lose potency with every cut of lead, what do you do next? Why should that work?

A: Lead compounds are compounds that have the desired pharmacological activity. These compounds have  a...

Q: In the above redox reaction, use oxidation numbers to identify the element oxidized, the element red...

A: Identify the oxidized and reduced element or ion--

Q: (S)-2-Bromooctane MeOH, 50°C Meo Br MeOH, 50°C Br 1-BUOK 1-BUOH, 50°C

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Q: what does having a DBE(double bond equivalent) of 6 indicate when working with spectroscopy graphs?

A: DBE or double bond equivalent or LU or level of unsaturation is the number of unsaturations present ...

Q: Complete the table below. Be sure each of your answer entries has the correct number of significant ...

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Q: Calculate the pH of a 0.256 M solution of ethylenediamine (H,NCH,CH,NH, ). The pK, values for the ac...

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Q: 1. Calculate the heat evolved when 13.56g of oxygen gas (O2) is used to burn  white phosphorus at st...

A: 1) Given, P4(s) + 5O2(g) → P4O10(s), ΔH = -3013 kJ/mol ∆H is in negative (-) which indicate the rele...

Q: What is the best choice of reagent(s) to perform the following transformation? ?

A: The conversion of alkene into an alkane involves the reduction( addition of hydrogens).  

Q: For "B nuclei (I= 3/2, y = 8.5843 × 10’ rad T-' s') in a magnetic field of 9.4 T, sketch a Zeeman en...

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Q: CH3CH2OH

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Q: An ideal gas in a tank at 500°C and 100 kPa is compressed isothermally to 1000 kPa. What was the wor...

A: Isothermal process are those process which are carried out at constant temperature.

Q: 8. Explain why is the first ionization energy for Ne > Ar 9. Explain why the electron affinity for M...

A: 8-   Neon has smaller size than argon. So, it has higher effective nuclear charge due to which outer...

Q: The ?a of a monoprotic weak acid is 0.00439 M . What is the percent ionization of a 0.105 M solution...

A: Given data : Ka of monoprotic weak acid = 0.00439 Concentration of weak acid [HA]o = 0.105 M

Q: C-CH3 H301+ CH2NA CH3OH

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Q: Draw the major product(s) obtained from the acid-catalyzed hydration of the following alkene: CH3CH2...

A: Acid catalysed hydration of alkene  This reaction involves addition of water molecule to double bond...

Q: Give a clear handwritten answer  ..?

A: Solid cobalt(II) nitrate is slowly added to 50.0 mL of a 0.0588 M Potassium  carbonate solution. The...

Q: Before performing a titration of vinegar itself, you first had to standardize the solution used to a...

A: As most base solutions are secondary standardized, so we need to standardise base solutions with a p...

Q: A 10µg/ml solution is prepared by diluting. ul of a 10mg/ml solution into 1ml of water.

A: Here we are diluting the concentrated sample to get a diluted sample.

Q: The interaction of light with a molecule depends on characteristics of the molecule.  The presence o...

A: The interaction of light with a substance depends on characteristics of the molecule because every m...

Q: Which of these statements concerning enzymes is correct? a. Enzymes increase the rate of reactions b...

A: The correct statement about enzymes are given below

Q: The molar solubility of silver chromate, Ag2CrO4, in water at a certain temperature is 6.9 x 105 M. ...

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Q: Use the VSEPR theory to prefict what the shape for the molecular structure of the following molecule...

A: VSEPR Theory  1.Count the number of lone pairs and bond pairs on central metal atom. 2. If the compl...

Q: Complete the table below. Be sure each of your answer entries has the correct number of significant ...

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Q: 5. What is the activity coefficient of Ba2+?

A: Given-> Molarity of BaCl2 = 0.025 M  

Q: determine the Kp value for: SO2(g) + 1/2 O2(g) ⇌ SO3(g) Answer: Kp = 1.9 atm-1/2 *I know how to g...

A: Given reaction : 2 SO3 (g) ⇌2 SO2 (g) + O2 (g) Kp = 0.29 atm Reverse the reaction, we get 2 SO2 (g) ...

Q: (ii) Describe the key molecular structure features of the pharmacologically active 2- oxazolidinone ...

A: Oxazolidinones are antibiotic and it inhibits bacterial protein synthesis. And it is effective again...

Q: In the titration of 145.0 mL of 0.4000 M HONH, with 0.2000 M HBr, how many mL of HBr are required to...

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Q: NH2 Ketone cat. H*,H20 Amine Imine

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Q: An evacuated (i.e. empty) vessel is charged with 1.38 atm of NH3 (9). The following reaction proceed...

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Q: Which sets of curved arrows accounts for the protonation of propene with HI? 1 2 а. 1 b. 2 С. 3 d. 4...

A: While drawing reaction mechanism, we represent the movement of electron through an arrow, with the t...

Q: 5) An enantioselective reaction has a AAG* = 1.4 kcal/mol. What is the e.r. and % ee of the reaction...

A: Enantiomeric ratio (er) is calculated as: er=exp(-∆∆G≠/RT)-1exp(-∆∆G≠/RT)+1 where R is universal gas...

Q: Methanol, CH3OH, is a promising fuel that can be synthesized from carbon monoxide and hydrogen accor...

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Q: 2CH;OH (I) + 302 (g) → 2CO2 (g) + 4H2O (I) AH = -1452 kJ A 2.00 g sample of methanol, CH;OH, is burn...

A: The reaction given is, Given: mass of methanol burned = 2.00 g. Mass of water = 500 g. Heat capacit...

Q: e. Describe the movement of all the different types of charges in the solution. f. Explain why a bat...

A: Here we are electroplating copper metal(Cu) over an iron nail(Fe).  This is possible when we put the...

Q: Question 3 Which of the following is the strongest base? a. iodide anion, I- b. fluoride anion, F- c...

A: b- fluoride ion is the strongest base because fluoride ion is the samllest among them and negative c...

Q: How to convert umol CH4 m-2 d-1 to mg CH4 m-2 d-1 and vice versa? Thank you.

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Q: Develop a multi-step synthetic route for the following transformation. Outline all reagents, conditi...

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Q: What is the best choice of reagent(s) to perform the following transformation? ÓH a. H20, H2SO4 b. H...

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Q: Methylating agents are substrates that deliver methyl groups to nucleophiles, and so are themselves ...

A: Methylating agent is chemical species which donates methyl ion to a nucleophile but also in some cas...

Q: A student wishes to determine the chloride ion concentration in a water sample at 25 °C using a galv...

A: Reaction :-  2Ag(s) + 2Cl-(aq) + Cu+2(aq) ------> 2AgCl + Cu(s) 

Q: Reactions Mechanism Major Product Mechanism Minor Product (SN1, SN1, E1, E2) (SN1, SN1, E1, E2) t-BU...

A: E2 and SN2 are the conjugate reaction and there is always a race between E2 and SN2 . In presence of...

Q: Protons and neutrons have Mass .......... .... wwwww less O equal O high O Other O specific metal ha...

A: Atomic weight = 180gm/mole Density =16.6 gm/cm^3 ->it is BCC structure.  

Q: Which of the following processes has a AS< 0? 1. N2O4(g)→ N2g)+ 202(g) II. H2O(2)→ H2O(s) III. COe) ...

A: Answer: Entropy is the measurement of system's disorder or randomness. Higher the number of states i...

Q: Give the organic reactant needed to complete each of the following Grignard reactions. Write out the...

A: Grignard reagent, any of numerous organic derivatives of magnesium (Mg) commonly represented by the ...

Q: Provide the major organic product of the following reaction. 1. (CH;CH2),NH. H Ph 2. Na(CH3CO);BH

A: Provide the major organic product of the following reaction.,

Q: a) When prepping a Grignard reagent, iodine is usually added. Explain the importance of the amount o...

A: (a). Iodine acts as an activator in the grignard reaction. Addition of a tiny crystal of iodine is t...

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.