Which of the following is the best option for transferring 20 mL of a solution?  Use a 20 mL Mohr pipette once Use a 10 mL Mohr pipette twice Use a 10 mL volumetric pipette twice Use a 5mL serological pipette 4 times Which of the following glassware is best used for drying solid samples in an oven? Beaker Crucible Erlenmeyer flask Watch glass Which of the following glassware is best used for slow dispensing of 47.00 mL of a solution? Mohr Pipette Volumetric Pipette Burette Graduated Cylinder

Q: What is the empirical formula of a compound that contains 27.0% S, 13.4% O, and 59.6% Cl by mass? (S...

A: Element Percentage Atomic weight Relative Number of atoms Ratio S 27.0 32.066 27.032.066 = 0.84 0....

Q: Gaseous ethane (CH, CH,) will react with gaseous oxygen (O,2) to produce gaseous carbon dioxide (CO,...

A:

Q: Which of the following will you use to find the Ka value for bromocresol green? Select one: a.The g...

A: the Ka value for bromocresol green, we can calculate from 

Q: Write the oxidation and reduction half reactions for the following redox reaction. Make sure to labe...

A: Answer: Specie, whose oxidation number increases, undergoes oxidation and Specie, whose oxidation nu...

Q: The components of angular momentum are as follows: I. L, = yp; - "Py II. L. = xp,- yPx П. L, 3 ур. —...

A: Angular momentum L→ is the cross product of the position vector r→ and the linear momentum vector p→

Q: 1. Determine the enthalpy of formation of the reaction: [4 NH: + 5 O2 -> 4 NO + 6 H2O] NH: = -80.89 ...

A: The correct option is:  

Q: How many significant figures does the difference 218.7201 – 218.63 contain?

A: For calculation of difference between two numbers, answer should be in least number of decimal numbe...

Q: Determine the concentration in mol/L (M) of a solution of 18.25 g of HCl in 250.0 mL of water and id...

A: The molecular weight of HCl is 36.5 gm/mol That 36.5 gm HCl=1mol Hence 18.25 gm HCl=18.25gm×1mol/36....

Q: Briefly explain (1-2 sentences) the differences between obtained results (Optical vs Mass Spectral) ...

A: ICP-AES is based on measurement of excited atoms and ions at the characteristics wavelength and used...

Q: Nal(sq) + Hg,(C,H,O;)a(aq) → Express your answer as a chemical equation. Enter NOREACTION I no react...

A:

Q: Create a flowchart of processing of biomass into fuel.

A: Biomass can be converted into different forms  of energy by various processes. Many factors affect t...

Q: What is the concentration (M) of KCl in a solution made by mixing 25.0 mL of 0.100 M KCl with 50.0 m...

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Q: Using the data in the table, calculate the standard entropy changes for the following reactions at 2...

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Q: A FACILITATED transport process is a form of ______________ transport, where an important chemical c...

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Q: dified True or False tions: Write CHEMISTRY if the statement is correct, if otherwise, change the un...

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Q: Pilocarpine is a medication used in eye drop to manage angle closure glaucoma. It works by activatin...

A: Prodrugs are the inactive form of parent drug that do not show activity until gets metabolized chemi...

Q: The standard cell potential for the reaction at 298.15 K: Fe (s) + Zn2+ (aq) ⇋ Fe2+ (aq) + Zn (s) i...

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Q: Which reaction is more energetically favored, one with ΔG0 = - 44 kJ/mol or one with ΔG0 = + 44 kJ/m...

A: The spontaneity of a reaction can be found out by the change in Gibbs free energy of the reaction. I...

Q: 22. Write the chemical equation and the equilibrium constant expression K, for the following bases i...

A: The bases given are,  

Q: I. Directions: Draw the lewis structures of the neutral atom and the ion of each element. Determine ...

A: Lithium (Li) atomic number = 3 Number of valance electrons = 1  

Q: Your lab colleague doesn’t understand why you want make a stock solution and then dilute it when you...

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Q: Which of the following statement/s is/are TRUE? I. The Arrhenius Theory cannot be applied to account...

A: The answer is given below

Q: The rate at which a certain drug is eliminated by the body follows first-order kinetics, with a half...

A: Half life time = 44 min  Initial concentration = 0.47 μg /ml. Time = 132 min  Concentration after 13...

Q: 15) Which one of the compounds corresponds to this IR spectrum. NH2 1000 2000 3000 4D00

A:

Q: The cell notation for the Galvanic cell is Cd(s)/Cd2+//I2(s)/I- The Standard Reductio...

A:

Q: Which of the following statement/s is/are TRUE?  The Arrhenius Theory cannot be applied to account ...

A: 1) The Arrhenius Theory cannot be applied to account for the behavior of the molar conductivity of s...

Q: Which of the following conclusions concerning the concentration-time plot provided below is/are corr...

A: Chemical kinetics is branch of chemistry in which we deal with rate of reaction.

Q: Which of the following statements is/are incorrect?

A: 1. False  Hydroflouric acid is highly reactive and reacts very easily with glass. Thus, it should ne...

Q: True/False.  HBrO3 is a strong acid. Why? c. Rank these acids from strongest to weakest: HF, H2O, H...

A: Those compounds which lose a proton in presence of any base or those compounds which decrease the pH...

Q: GENERAL CHEMISTRY 2 (STEM Fay M. Lafable GI Name: Clyme lified True or False Cons: Write CHEMISTRY i...

A: The third postulate of KMT is-

Q: Which of the following is/are true concerning a chemical reaction at equilibrium? 1. The system will...

A: Reversible reaction: The chemical reaction in which the products can react to reform the reactants. ...

Q: When cobalt chloride is added to pure water, the Co2* ions hydrate. The hydrated form then reacts wi...

A: THIS CAN BE UNDERSTAND BY CFSE CALCULATION

Q: 13 4 10 5.50 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and...

A: Here an organic compound of mass 5.5 gram containing carbon and hydrogen , perhaps containing oxygen...

Q: Alice's pH meter broke and will only report [OH−]. What is the pH of a solution with a measurement o...

A: Given, [OH-] = 1.122 mM = 1.122 × 10-3 M

Q: Consider the reaction: BaSO4    Ba2+ + SO42-; Ksp = 1.1 x 10-10 What is ΔG° at 25 °C?     57 kJ/m...

A: Given Data :  1. Ksp = 1.1×10-10  2 . Temperature = 25oC                             = (25+273)K    ...

Q: Which of the following is not a way of expressing data reliability:   Statistical Tests   Sampling...

A: A question based on tools in analytical chemistry that is to be accomplished.

Q: Isomerisation of [Co(NH3);NO2]Cl2 (Nitro) to [Co(NH;};ONO]CI, has been studied extensively using IR ...

A: The absorbance is measured at 1055 cm-1.

Q: Bromination of an alkene by N-bromosuccinimide (NBS) in the presence of light or peroxide is a radic...

A: The reaction given is,  

Q: According to Le Chatelier's Principle, acetal product formation tends to INCREASE (rather than decre...

A: Carbonyl compound (aldehyde and ketone) reacts with an alcohol to form hemiacetal in the presence of...

Q: 4. When a person inhales, air moves down the bronchus (windpipe) at an estimate of 18 cm/s. The aver...

A: Given  data: 1)Speed of air in bronchus = 18 cm/s                                      V1        = 0...

Q: What is the shape of OXEF4

A: A molecule is given is XeOF4. We have to tell its shape. We know that hybridization is  H = Number o...

Q: The percent mass of chlorine in manganese (II) chloride is 56.34% Determine the mass of manganese (I...

A: Given: Mass percent of chlorine i.e. Cl in manganese (II) chloride i.e. MnCl2 = 56.34 % And mass of ...

Q: h) CH3-CH2-CH2-CH2- ċ=ċ-CH3 i) CH3 -CH3 CH3 CH3-CH,–ĊH ČH3 HIC

A:

Q: 3.Show the steps involved in the following synthesis Br çO,H CI

A:

Q: Another experiment requires you to take 25.0g of zinc chloride and add it to 175.0mL of water?  What...

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Q: Consider the following equilibrium: N204(8) = 2NO2(g) Suppose two different experiments were conduct...

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Q: -1 3) The IR absorption at 1630 cm belongs to (a) CH;-C=N )CH>-CH=CHICH, (c) CH2=CH-CH=CH-CH2 (d) H-...

A: The correct option are: Note: as per company policy we are supposed to answer first three questions ...

Q: The equilibrium constant for a reaction A + B = Y + Z is 0.1.  What amount of A must be mixed with 3...

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Q: Consider the simple functions below, f(x) = x² (1) f(x) = x3 (2) f(x) = x* + 2x³ (3) f(x) = sin(x) (...

A:

Q: How many grams of gas are present in each of the following cases? b. 8.75 L of C₂H₂ at 378.3 kPa and...

A: We have to predict the mass of gases.