What volume of purified water, in milliliters, do you need to add to 5 mL promethazine 2 mg/mL solution to make promethazine 250 mcg/mL solution?

Q: Show your calculations clearly. Suppose you are provided with a 36.55 g sample of potassium…

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Q: Which of the following is/are isoelectronic to Kr? (Choose all that may apply) Select 2 correct…

A: Isoelectronic---- These are atom, ion or molecule that contain same number of electrons.…

Q: 2. Show the complete reaction mechanism that would make pentyl propanoate from propanol

A: The formation of esters by the reaction of a carboxylic acid and an alcohol in the present of…

Q: (CH3)3COH = convert tocomplete structure

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Q: How many atoms are in 0.89 mol of iron? How many grams of carbon dioxide are in a container with a…

A: 1 mole = 6.022 * 1023 molecules/atoms    Note : There are multiple questions posted. As per…

Q: Aqueous hydrobromic acid (HBr) reacts with solid sodium hydroxide (NaOH) to produce aqueous sodium…

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Q: At a certain temperature the rate of this reaction is first order in CICH₂CH₂Cl with a rate constant…

A: Given, First order reaction, ClCH2CH2Cl (g) ----> CH2CHCl (g) + HCl (g) Rate constant (k) = 0.144…

Q: Provide the IUPAC name for the following compound: O3-methyl-2-propylpentane…

A: To provide the IUPAC name for the following compound.   Rules for naming a compound in IUPAC are:-…

Q: Example: cis-C₂H₂Cl₂ Consider the highlighted bond. If the bond is polar, click on the more…

A: Relationship between Ionic character and electronegativity difference (∆EN): Ionic character of the…

Q: Following is H-NMR of compound A . Compound A is comprised of H, C and O atoms. In mass spectrum,…

A: IHD = Number of Pi bonds or ring

Q: Classify these salts according to Strength and Role in the Buffer system 1. N2H5Br 2. AgNO3 3.…

A: 1. N2H5Br is an acidic salt and it can alter the pH.  2.AgNO3 is an acidic salt and it can alter the…

Q: What is the pOH of a 0.0245 M HCl solution?

A: The given solution is strong acid HCl solution . Concentration of HCl Solution is 0.0245 M. We have…

Q: Provide the correct three-letter abbreviation for the following amino acid: O || H3N-CH-C-O I CH₂ I…

A: There are two questions given above from the topic of biomolecules of organic chemistry . They ask…

Q: A 0.487 M solution of a weak base (B:) is made. The Kb for this acid is 6.36-10-5. What is the pOH…

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Q: Write the common name for each of the following. Part A CH3 HNCH2CH3 Spell out the full name of the…

A: The common name of amines is by writing the alkyl group or groups attached to the nitrogen atom in…

Q: Sodium butanoate is the conjugate base of __________.     CH3CH2CO2H     (CH3)2CH2CH2CO2H…

A: Introduction :-  Conjugate acid-base pair :-              The chemical species whose formulae differ…

Q: Range from the most reactive metal from least reactive: Ag, Cu, Zn, Pb, Mg

A: Given metals are : Ag, Cu, Zn, Pb, Mg  Arrange from most reactive metal to least reactive metal.…

Q: 2 Al Brz + 3 K₂ 504 € 6 KBr 7 Al₂(1504/13 JF one places 5.3 mobs Of Albrz and 2.9 Modes of K₂SO4…

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Q: At a particular time for the reaction Br₂ + 3Cl₂ --> 2BrCl3, the rate of disappearance of Cl₂ was…

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Q: amount of Aluminum hydroxide required to completely neutralized 20.0 mL of 0.100 M sulfuric acid. If…

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Q: Was your average experimental mass percent of oxygen in potassium chlorate higher or lower than the…

A: One mol KClO3 contain 3 mol of oxygen and 1 mol of K and 1 mol of Cl Molecular mass of KClO3 = 122.5…

Q: How many electrons are required to fill all the following subshells?  1s 2s 2p 3s 3p 4s 3d 4p

A: Electrons are filled in a different atomic orbital in an atom. According to the Aufbau rule, the…

Q: (B) Energy level Diagram Sr Atom S-2 ion Sn Atom Cu+2 ion

A: As you need help in energy level diagram so I am mentioning energy level diagram here one by one.

Q: The rate constant k for a certain reaction is measured at two different temperatures: temperature k…

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Q: the IUPAC name of CH2CHO

A: We need to define IUPAC name of given compound.

Q: Which of the following bonds are classified as being a polar bond. (Show your calculations and…

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Q: Suppose the decomposition of ozone proceeds by the following mechanism: step elementary reaction…

A: The rate determining step will be the slowest step.

Q: Examine the following equilibrium table for the reaction shown at the top of the table. N₂O(g)…

A: Given data : Initial concentration of N2O4 = 0.150 M Initial concentration of NO2 = 0.100 M Given…

Q: :. 2 in Au ● Na₂ Coz + 2 Call₂ -> ? Cal 03 (s) + ? mass 0.0008 g mass of of Сасоз 2.1547 Volume of…

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Q: Example: trans-C₂H₂Cl₂ Consider the highlighted bond. If the bond is polar, click on the more…

A: Relationship between polarity and electronegativity difference (∆EN): Polar character of the bond…

Q: Suppose 0.802g of sodium iodide is dissolved in 50.mL of a 59.0mM aqueous solution of silver…

A: Balanced equation for the reaction of sodium iodide (NaI) and silver nitrate (AgNO3) is , NaI(aq) +…

Q: Calculations for the Specidfic Heat for an Unknown Metal   Trial 1 Trial 2 Mass of unknown metal(g)…

A: Heat lost by metal is equal to the heat gained by water in the calorimeter as total energy remains…

Q: ph of 10ml 2.0 M NaOH + 10mL water

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Q: A bag of candy weighs 0.0049 kg. How many grams is this? 4.9 g 0.49 g 49 g 0.000049 g

A: 1 Kilogram (Kg)  = 1000 g

Q: Suppose 2.61g of zinc chloride is dissolved in 150.mL of a 70.0mM aqueous solution of potassium…

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Q: Some reactions require energy from the surrounding to react. The temperature of the the surroundings…

A: The reactions which require energy from the surrounding are the endothermic reactions.

Q: Question 12 of 19 > A gas-filled weather balloon has a volume of 50.0 L at ground level, where the…

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Q: Consider the Lewis-dot structure for PHBr2 below. State the electron geometry (EG) and molecular…

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Q: 3. Examine the reaction mechanism found below: (slow) (fast) (fast) (fast) A + B₂ → AB₂ AB₂ + CAB₂C…

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Q: 212. Explain the following diagram (a) and (b) and compare two models and associated heories…

A: These  are the models of JJ Thomson and Ernest Rutherford.

Q: 1. A solution is made by mixing 3.40 g of tea in 76.0 g of water. What is the mass percent of tea in…

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Q: The temperature of a fixed mass of gas was varied was from 16 °C to 58 °C without changing the…

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Q: 4N0 19 + 6 A ₂0K) - 4 NH3 + 50₂ (9) DH = 70,000 J. Using Le ChatelieRS PRIciple explain yow anch of…

A: The answer to the following question is-

Q: A steel container, 0.003 m³ in volume, is charged with CO₂. The vessel is brought to 20 °C at which…

A: Solution: In the given problem we have to calculate the mass of liquid and vapour in the vessel.

Q: The specific heat capacity of aluminum is 0.214 cal/g °C.. How many calories of heat are necessary…

A: Please find your solution below : Calorimetry is a branch of science which deals with the…

Q: 4 One mole of N2​O4​ is introduced into a constant pressure chamber at a temperature of 298.15 K and…

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Q: H₂N-CH- H A tripeptide consisting of valine, alanine, and glycine is shown here. Identify the…

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Q: How do you separate kerosene and alcohol from ammonia

A: Kerosine is a long chain alkane hydrocarbon, alcohol is R-OH, and ammonia is NH3.

Q: Which of the following chemical equations represent a synthesis or combination reaction? 2 KCI (aq)…

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Q: Acetylene and oxygen react to form carbon dioxide and water, like this: 2C₂H₂(g)+50₂(g) 4CO₂(g) +…

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