Which of the following is not a necessary step to do before using an analytical balance? A.centering the bubble B.cleaning the balance of spills C. stabilizing the balance D.plugging the power cord E.none of the above

Q: How many grams of NaF (41.98817 g/mol) would have to be added to 2.00 L of 0.100 M HF (20.01 g/mol) ...

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Q: What is the mole fraction of the components of a solution containing 18g H2S0 in 75g of liquid water...

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

Q: Give the safety measures when working with the following lab equipment during experiments and conduc...

A: Saftey precautions  are necessary  for saftey of all the stake holders working there.

Q: Provide the correct IUPAC name for the compound shown here.

A: The following steps are required-> ->First of all give numbering to the longest chain starting...

Q: 1. Predict the product(s) of the following reactions CH3 HCRO4 A CH3 а) CH3 ÇH3 NBS H3C- CH3 b) CH3 ...

A: This question is based on important organic reaction.

Q: A student prepared a solution that contains 26.3 g KCI in 180.5 g of water. What is the percentage b...

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

Q: The dissociation of PCl5(g) to PCl3(g) and Cl2(g) is an endothermic reaction. PCl5(g) PCl3(g) + Cl2...

A: Le Chatelier's principle: This principle is used to predict the effect of a change in conditions on ...

Q: Whi‎ch of the fo‎llowing ill‎ustrates chel‎ate effect ? Select one: a. Ni+2 coordi‎nated with 6 NH3...

A: a. Ni+2 coordinated with 6 NH3 will have low‎er  K‎f  tha‎n Ni+2 coordinated with 1 ED‎TA

Q: M is a multpiat 0. The 'H NMR spectra for the following eight-membered ring compounds are summarized...

A: 6. We have to assign the given eight membered compounds based on the given proton NMR data. The give...

Q: Approximately how much (in mL) of 0.1000 N NaOH is required to neutralize 0.5000 g of potassium acid...

A: Given-> Normality of NaOH = 0.1000 N Weight of potassium acid phthalate = 0.5000 gm    

Q: Which of the following is CORRECTLY arranged from the state of matter with the most widely spread pa...

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Q: Part A:  Calculate the theoretical yield for this experiment (show work clearly) Part B: Explain wh...

A: Given data: Mass of p-acetamidophenol = 1.063 g Volume of bromoethane used = 0.80 mL   Data needed: ...

Q: x 10° if 21.65mL of the sat. calcium hydroxide solution was titrated with 14.82mL of The experimenta...

A: Given: Concentration of HCl = 0.041 M Volume of HCl required to titrate the saturate calcium hydroxi...

Q: What is the pOH of a solution that contains 5.7 x 10> M HCl at 25°C? Express your answer in two deci...

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Q: 8. Assume that the following exchangeable cations are present in a 25 gram sample of a soil wt (g) 0...

A: Given: Sample of soil = 25 g  weight of different cation in the soil sample   To calculate: c) How m...

Q: What is the formula for hydroiodic acid? Hint: for CO2, write CO_2

A: Given,  Hydroiodic acid 

Q: Explain how IR spectroscopy could be used to distinguish between the following sets of compounds. Be...

A: IR spectroscopy gives the information about the functional groups of unknown.  

Q: Sulfur compounds are converted to H2SO4 while NO, compounds are converted to HNO3, and NH3 reacts wi...

A: Since you have posted multiple sub-parts questions, as per our company guidelines we are supposed to...

Q: Given the reactions, X(s) + ¿O,(g) → XO(s) AH = -987.7 kJ XCO,(s) → XO(s) + CO,(g) AH = +293.1 kJ wh...

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Q: How much work, ?,w, must be done on a system to decrease its volume from 12.0 L to 4.0 L by exerting...

A: Formula used :-  W = -PdV  Where dV = (Vfinal - Vinitial )

Q: The oxidation of ammonia into nitric oxide is an exothermic process. 4NH,(g) + 50(g) = 4NO(g) + 6H¸O...

A: 4NH3(g) + 5O2(g) --> 4NO(g) + 6H2O(g) ∆Hrxn = -904.4 KJ  

Q: 1 How do you find the density of an irregularly shaped object? 2 What are some devices that can lift...

A: The answer to the following question is-  

Q: Mark and John, two vinegar enthusiasts, are each tasked to determine the acetic acid content of thei...

A: Titration analysis [Here KOH is the standardized titrant that has been first standardized using KHP]

Q: 100.0 mL of 0.20 M HF (K, = 7.2 x 104is titrated with 5.0 ml of 0.25 M NaOH. Calculate the pH at thi...

A: Henderson–Hasselbalch equation PH = PKa + log [salt]/ [Acid] NaoH is limiting reagent, it will consu...

Q: Suppose 1.44 0.150 M benzoic acid solution. Calculate the pH of the resulting buffer solution as- su...

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Q: 90. A buffer solution is prepared from equal volumes of 0.200 M acetic acid and 0.600 M sodium aceta...

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Q: ieous ethanol solutions are prepared by mixing measured weights of assayed ethanol and organic-free ...

A: To Solve this problem first we have to calculate the number of moles of ethanol then we will calcula...

Q: functional group and IUPAC

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Q: Explain the bond formation between NH3 and Ni2+ in terms of Lewis acid-base theory.

A: To explain: The bond formation between NH3 and Ni2+.  

Q: What precipitate will form when aqueous ammonium sulfide reacts with aqueous copper(II) nitrate? Not...

A:  Definition of precipitate :   

Q: If 25.0 mL of 0.18 M methylamine (CH3NH2) (K = 4.4 x 10) is titrated with 0.048 L of 0.70 M HBr, the...

A: Since you have posted multiple questions, as per our company guidelines we are supposed to answer on...

Q: a) Sketch the molecular structure of EDTA. Indicate the ligands in your sketch.

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Q: Consider an ideal gas enclosed in a 1.00 L container at an internal pressure of 24.0 atm. Calculate...

A: Given data is as follows: The initial volume of the ideal gas V1 = 1.00 L The final volume of the id...

Q: Why is it that the red liquid inside the thermometer moves up when a thermometer is heated? Select t...

A: Since you have posted more than one question, we will solve only first question for you. If you want...

Q: Curved arrows are used to illustrate the flow of electrons. Follow the arrows and draw the reactant ...

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Q: A student performed an 3. experiment to determine the solubility of KCL The following data was colle...

A: Given: Mass of empty 250-mL beaker = 105.6 g Mass of the 250-mL beaker and the saturated KCI solutio...

Q: The following test data were obtained for an aqueous solution of calcium chloride. Mass of empty 100...

A: Given,  The Mass of empty 100-mL graduated cylinder=36.2 g             nn                          T...

Q: Using the given TLC plate can you describe the results and what does the TCL plate tell about the pu...

A: To describe the results on TLC plate for purity.

Q: a. Calculate change in pH when 50 mL of a buffer is added with 5 mL of 0.10 M NaOH. The buffer has a...

A: 1) Here we have to determine change in pH when 50 ml of buffer is added with 5ml of 0.1M NaOH soluti...

Q: What quantity of electricity would be required to reduce 10 g of nitrobenzene, C&HSNO2, completely t...

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Q: A cell can be prepared from copper and tin. What is the E° cell for the cell that forms from the fol...

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Q: A) TTempersture Į vohime v Molarity ↑ Molority B.) ↑ Tempersture ↑ volume c.) V Molbvity C.) v Tempe...

A: Option D is correct answer.

Q: 9. What volume of a silver nitrate solution that contains 10.98 g of primary standard AgNO; in 1.00 ...

A: Mass of AgNO3 = 10.98 g Volume of primary standard AgNO3 = 1.0 L Mass of Na2CrO4 =  0.259 g  

Q: Propose a reasonable Phase I and a Phase II metabolite for the following

A: Phase-I metabolites: The drugs become pharmacologically inactive by modifying the functional groups ...

Q: Calculate the molar solubility of Al(OH) 3 in a buffer solution with 0.100 MN * H_{3} and 0.400 M NH...

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Q: What is the formula for manganese (V) hydroxide? Hint: for CO2, write CO_2

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Q: 21. The binding of aspartate to different subunits of ATPase is an example of a. Negative cooperativ...

A: 21 .C .. 22 D 

Q: diffusion

A:

Q: H H C- ç-C-C-H C. H-c %3D C. H. H.

A:                                         Answer  Intermolecular forces :- intermolecular forces that ...

Q: Calculate the freezing point of a glass of water of volume 250cm3 sweetened with 7.5g of sucrose

A: A question based on mole concept that is to be accomplished.