Which of the following are exact numbers? Select all that apply. 30 ft 6.70x108 hrs 1 ns = 1x10-9 s 1 kg = 2.205 lbs

Q: What is Van dorn water sampler

A:

Q: I. III. 0 NNCH 3 MeOH OCH3 OH OCH3 II. IV. COH MeOH

A: ->Nucleophilic addition-elimination reactions, involves the addition of a nucleophile to a…

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A: The sharp peaks at 2900 to 3000 cm-1 indicates the presence of the SP3 C-H bond .  Sharp peak at…

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A: Mixture is a type of matter which is composed of two or more substances. These are called as…

Q: The Q vs time plot below represents which of the following disturbances to this chemical…

A: The given curve indicates that the reaction is in equilibrium,The given Reaction is an acid base…

Q: The order from high to low of ointment bases in terms of affinity to water: Select one: O a. water…

A: Ointment bases are the substances that are added to active ingredient forming the appropriate base…

Q: Try the best straight line through this graph and determine the aspirin tablet molarity from it’s…

A: Given: To find: the molarity of aspirin tablet

Q: Calculate: a) The average amount of paracetamol per tablet using both the calibration curve and the…

A: We will plot a calibration curve with absorbance as y axis and concentration as x axis which will…

Q: NaOH, H2O H.

A: Aldol Condensation Reaction In this reaction an enolate ion reacts with carbonyl compound to produce…

Q: QUESTION 28 Using the rules that we learned in class, write the name of MnO2. QUESTION 29 Using the…

A: Rules for naming simple ionic compounds - First of identify metal and non metal in compound.Name the…

Q: Using axis and planes of symmetry: What is the maximum number of signals this molecule will give on…

A: In a molecule containing equivalent protons will have same chemical shift value.If protons are…

Q: Complete the following table. Directions: Remember that spelling counts. Do NOT capitalize names.…

A:

Q: Br i) NACN iv) D.

A:

Q: diffrentiate between oil in water emulsion and water in oil emulsion.

A: Dispersed phase and dispersion medium are liquids in the colloidal systems. Such liquid systems are…

Q: CH₂COOH(aq) is classified as a # acid. The reaction equation with water utilizes which of the…

A: A weak acid is that acid which do not undergo complete dissociation in water.

Q: b. +

A: Resonance structures are alternative lewis structures that represent possible electrons…

Q: Solution Concentration of FeSCN2+ (M) Absorbance 1 0.0000491…

A: According to Beer Lambert law, the absorbance of any solution is directly proportional to the…

Q: make a suggestion why dipentene used for cleaning purpose is more easily biodegradable than mineral…

A: Answer - Dipentene - Dipentene is used as a solvent for resins, alkyds and waxes and to make paints,…

Q: The local anesthetic novocaine is the hudrogen chioride salt

A: The overall reaction is: Calculation of Ka of novocaine:

Q: C/ поведен НО OH SOCIz Pyridine

A: SOCl2 known as thionyl chloride used to convert carboxylic acids to acid chlorides. The reaction…

Q: wet gum and dry gum method, what apparatus is use to triturate the emulsifier, oil and water?   a…

A: An emulsion can be defined as a mixture of two or more than two liquids that are immiscible with…

Q: 50 mg/day 2. The following regimen for oral How many scored 25-mg tablets and how many 5-mg tablets…

A: 50 mg/day x 10 days 25 mg/day x 10 days 12.5 mg/day x 10 days 5 mg/day x 10 weeks

Q: c) the following are the active ingredients of some of over the counter pain relievers (analyzed by…

A:

Q: e) Which of the following formulations can be used to make a liniment a) 0) and (i) ) and () O…

A: e) The formulation that can be used to make liniment are Suspension Solution Emulsion

Q: The density of the first fraction collected would be expected to be close to a value of ______.…

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Q: PRE-LAB QUESTIONS 1. Look up the melting point of pure aspirin from a reliable source. It can be…

A: We have to tell the melting point of aspirin or acetylsalicylic acid.

Q: What is the purpose of adding charcoal in toothpaste formulation? Is it approved by American Dental…

A: Ans. Purpose of adding charcoal in toothpaste formulation: Recently, charcoal-containing…

Q: 1. BH3 - THF 2. H2O2, NaOH, H₂O OH HO and/or

A: Hydroboration-oxidation is a two-steps organic reaction that converts alkenes into alcohols.

Q: What should go in place of X? A) As B) Se C) Os D) O Y 76 Z

A:

Q: Table 2: Absorbance Values of Standards and Unknowns. Sample Blank Standard Solution 1 Standard…

A: We have to draw the absorbance vs concentration graph from the given data.

Q: what is the chemical formula of 40% LiCl solution absorb water? How does 40% LiCl solution absorb…

A: 40% of lithium chloride has formula LiCl or CILi as, Lithium Chloride has the chemical formula LiCl…

Q: non ionic surfactant bear anelectrical charge' true false

A: Answer  A Non - ionic surfactant has no charge groups…

Q: If a 103 g sample of the liquid iodobenzene has a volume of 56.4 mL, what is the specific gravity of…

A: Given: mass of iodobenzene = m = 103 g            Volume of iodobenzene= V =56.4 mL  Required:…

Q: Write the resulting linear regression equation and R² of the plotted standard calibration curve.

A: To provide the regression equation and the R2 value of the plotted standard calibration curve.

Q: Information about a Water Sampler

A:

Q: HO- - OH 1 solute 1₂ | OH OH 1 CH₂-CH-CH-CH-CH-C-H H NHINO, I OH Which is the better solvent? || H…

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Q: Assuming

A: Extinction co-efficient = 0.01662 Lmg-1cm-1 Concentration of unknown sample = 14.634g/ Explanation~

Q: In tablet formulation, what is the importance of using Avicel® PH grades as excipient?

A: Avicel is the trade name of microcrystalline cellulose used in tableting as a flow aid, compression…

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A:

Q: 1. NaOCH3/CH₂OH 2. CH3CHO 3. H30+ ОН CH3

A: The alpha hydrogen of carbonyl compounds is acidic in nature and it is removed as a proton in the…

Q: What is Kemmerer water sampler

A: Kemmerer water sampler :- It is a device that makes it possible to obtain a sample of water from…

Q: Select the product of the following reaction. и O O ОН ОН OH NaBH4, CH3OH

A: Given,The reaction:

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.