Which practice is NOT used to gauge accuracy? raw data and results from calibration checks B. fortification recoveries (c quality control samples D blank samples E sample replications

Q: Consider the following system at equilibrium where AH° = 87.9 kJ/mol, and K. = 1.20×10-2 , at 500 K.…

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Q: A weak acid has Ka of 4.47 x 10-4.  What is pKa for this weak acid?

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Q: 1. PbO2+ HBr 2. PbO + NH, → Pb + N, + H,O PbBr, + 02 + H,0

A: Note : Put integer values before starting material and products and balance the equation.

Q: Gitenqueteophite indicate which, the Stronger muctee, ethoxide of ethomat Explain Joo fa both of.

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Q: hot lump of 36.1 g of aluminum at an initial temperature of 51.1 °C is placed in 50.0 mL H2O…

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Q: Identify the major aldol condensation product obtained when the following compound is heated in the…

A: Given compound is pentanal  And it has aldehyde functionality. It is a base catalyst reaction.…

Q: Calculation: Theoretical Yield: 1.5g aminobenzoic acid x (1mol/137.14g) x (1mol benzocaine/1mol…

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Q: 2. Two emissions of light were observed. One emission (A) was at 410 nm and the other (B) was at 690…

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Q: For the reaction at equibrium. 3Feis) + 4H2Oul - Fez04ls) + 4H2(a), removing some of the product.…

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Q: -2.421 x 108 -2421 x 101 -2421 x 103 1458 x 1016 -1458 x 10

A: Given,  Mass defect (□m ) = -0.1620 amu (1 amu = 1.67 ×10-27 Kg) □m = -0.1620 × 1.67 ×10-27 =…

Q: the

A: According to the question, we need to determine which of the following electrochemical methods…

Q: 26. Given the following reaction, what volume of oxygen would be needed to react with 250. grams of…

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Q: 4. Br + CIO + H* Br, + Cl¯ + H,0 2+ 4+ 5. Sn + VO, + H → Sn + V²* + H,0 »

A: The answer is as follows:

Q: Select Rings More Erase Draw HNO3 + H,0 H2SO4

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Q: 6) hat is the osmolar ity = Øic o smolerity O.49 2x 0.93 %3D 263.4 mM :0.263 x (03 7) Fill in the…

A: Hyposmotic, hypotonic

Q: Calculate Kp for the reaction 2NOCIig) = 2NO(gi + Clzla) at 400'C if K- at 400°C for this reaction…

A: Which one of the following options is correct

Q: what is the condensed formula for 2-methyl-2-hexene

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A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

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Q: Br NASH DMF `CH Question 2 Categorize and draw the product for part B of the lab

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Q: A chemistry student weighs out 0.146 g of chloroacetic acid (HCH,CICO,) into a 250. mL volumetric…

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Q: The nuclide 93Np239 decays by emission of a negative electron. The daughter nucleus will have an…

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Q: Rank the relative rates of the following alkyl halides in an E1 reaction.

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Q: A 20.33 g sample of a substance is initially at 28.5 °C. After absorbing 2325 J of heat, the…

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Q: A sample of neon initially has a volume of 3.50 LL at 18 ∘C∘C. What final temperature, in degrees…

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Q: Describe why "new" elements (man-made elements) are created, or why do we benefit in creating them?…

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Q: 4. For over-the-counter preparations, inactive ingredients are called fillers. Are these the…

A: We have find out the answer.

Q: A student attempts to determine the molecular weight of an unknown liquid with a boiling point of…

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Q: This refers to a point wherein both liquid phases have the same composition. Hence, extraction is…

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Q: Give the IUPAC nomenclature of the compound below.

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Q: In the laboratory, a general chemistry student measured the pH of a 0.544M aqueous solution of…

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Q: In which of the following pure compounds would intermolecular hydrogen bonding be expected? (Select…

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Q: Which of the following 0.05 M aqueous solutions will have the highest boiling point? O Glucose O…

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Q: The decomposition of NaCl(l) into Na(l) and Cl2(g) is thermodynamically unfavorable. The…

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Q: a. Predict the molecular structure and bond angles for PO,3. Approximate bond angles are sufficient.…

A: Given-> 1-> PO43- 2->SO42-

Q: Calculate the volume in milliliters of a 1.9M iron(II) bromide solution that contains 225. mmol of…

A: Given :-  Molarity of FeBr2 solution = 1.9 M  Number of moles of FeBr2 = 225. mmol  To calculate :-…

Q: A chemist adds 135.0 mL of a 0.069 mol/L potassium dichromate (K2Cr2O7) solution to a reaction…

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Q: Br + CIO" + H' → Br, + Cl + H,O Sn* + Vo, + H* → Sn" + V* + H,O

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Q: mixed in aqueous solution. If no rea sure to include the proper phases for

A: Balanced chemical reaction  Li2SO4(aq.) + Ca(NO3)2(aq.) ---> CaSO4(s) + 2LiNO3(aq.) Complete…

Q: A) an insoluble ionic solid B) a soluble ionic compound C) an immiscible molecular compound D) a…

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Q: The atomic mass unit is based on the mass of the _________ atom.

A: