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Q: An buffer is prepared by combining 1.61 moles of HX solution with 0.28 moles NaX and diluting to a t...

A: Given :- number of moles of HX = 1.61 mol  Number of moles of NaX = 0.28 mol  Total volume = 1 L  Ka...

Q: 1  It is a mathematical expressions relating the concentration of reactants to the reaction rate ? ...

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Q: Relating Density to Crystal Structure 1. Show that the atomic packing factor for FCC is 0.74. 2. Sho...

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Q: Relating Density to Crystal Structure 1. Show that the atomic packing factor for FCC is 0.74. 2. Sho...

A: Given,  The calculation for the atomic packing factor for BCC(Body centered cube) is:

Q: PROCEDURE A. Activity Proper II. 1. Given the experimental data below. Phase Present Ice (solid) Tem...

A: Strong ice is warmed and the temperature increments until the typical freezing/softening place of ze...

Q: 36) Apure substance be oparated into two difs.

A: Given : a pure substance. 

Q: Which of the following statements is correct about the formation of emulsion? O Soaps and detergents...

A:                                 Answer  Which statement is correct about the formation of emulsion E...

Q: The burning of 20 g of SiH 4 (MW= 32.8)at constant pressure gives off 927 k) of heat. Calculate AH f...

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Q: 10.0 M NH3 pH: [H30+]: [OH-]: pOH:

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Q: 24. Two elements that have the ground-state valence shell configuration of ns?npª are | Select ) ( S...

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Q: Predict the major product for the following reaction. Na,Cr207 H2SO4, H2O ?

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Q: I need help calculating the concentration of acid in each buffer solution show in the second picture...

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Q: Br O,N

A: 1. In aromatic electrophilic substitution reaction,  substituent attached with benzene ring controls...

Q: Give the calomel electrode half cell diagram. What equailibria control the electrod potential of cal...

A: Answer: Electrode potential of a cell can be calculated by the formula shown below: Ecell=E°cell-0.0...

Q: The value of Henry's law constant for helium (He), hydrogen (H2) and oxygen (02) are respectively 14...

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Q: 10 3H 3H 2H

A: We have to determine the structure of the molecule by using the NMR spectrum. The molecular formula ...

Q: For Problem no. 19-20: A flask is charged with 0.124 mol of A and allowed to react to form B accordi...

A:     Recall the given reaction,      A (g)               B (g) The flask is charged with 0.124 mole o...

Q: F intermolecular forces are

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Q: f 5.85 mL of 0.00832 M EDTA solution were needed to titrate a 0.0225 L water sample to an Eriochrome...

A: Balanced reaction is :      Ca2+ + EDTA4- ===> [Ca-EDTA]2-          

Q: An unknown metal with atomic radius of 0.175 nm forms an SCC structure. What is the density of the u...

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Q: What is the pH of a solution made by mixing 40.0 mL of 0.035 M KOH (aq) and 91.3 mL of 0.031 M Sr(OH...

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Q: A 25.0 g block of copper (specific heat capacity 0.380 J/g･°C) at 81.2 °C is placed into 500.0 g of ...

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Q: 2/5 Liquid hexane (CH3(CH2)¸CH3) reacts with gaseous oxygen gas (0,) to produce gaseous carbon dioxi...

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Q: For isothermal transformation of an iron-carbon alloy of eutectoid composition, sketch a sample path...

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Q: Is the precision of your two trials within 5 %?. Support your answer with calculations

A: In order to analyze the precision of an experiment, we calculate the Percent relative standard devia...

Q: Which of the following statements about a gas chromatogram is correct? O Tailing indicates that the ...

A: A question based on analytical separations that is to be accomplished.

Q: H2C N: H3C CH || CH 1a. A) sp 1d. B) sp- A) sp C) sp3 B) sp? D) sp³d C) sp3 E) sp'd? D) sp'd Place y...

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Q: Answer no. 5 only

A: The unit cell for tin has tetragonal symmetry, with a and b lattice parameters of 0.583 and 0.318 nm...

Q: Helium-filled balloons are used to carry scientific instruments high into the atmosphere. Suppose th...

A: Helium-filled balloons are used to carry scientific instruments high into the atmosphere. Suppose th...

Q: 3. Iron has a BCC crystal structure, an atomic radius of 0.124 nm, and an atomic weight of 55.85 g/m...

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Q: masses

A: This 'missing' mass (about 0.1 percent of the original mass) has been converted into energy accordin...

Q: A receptor, R, binds to its ligand, L, according to the binding curve shown below. If [R]= 25 mM at ...

A: Concentration of ligand= 28mM 

Q: What reagent would you use to distinguish be

A:   Ketones are having carbonyl funtional group , to identify this functional group 2,4-DNP test is p...

Q: For each step in the reaction show the mechanisms. Each reactiond has at least one intermediate

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Q: 3. Solar radiation heats the surface after sunrise, and the resulting heat flux F to the atmosphere ...

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Q: Check Your Understanding on Crystal Structure 1. Differentiate crystal structure, crystal system, an...

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Q: A 245.0 mL sample of 0.15 M Ba(OH)2 is added to 438. mL of 0.20 M HNO3. What is the pH of the result...

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Q: 1. Construct a heating curve using the experimental data above. For modular students you can used gr...

A: To plot the heating curve of water. Since you have asked multiple questions, we will solve first one...

Q: 1. I have problems understanding the results of this experiment, could you help me by explaining the...

A: In order to obtain the result of the experiment, we have to find the most suitable wavelength to mea...

Q: Indium reacts with chlorine to form InCl3. In the balanced equation for this reaction, the coefficie...

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Q: (A) 1,2- and 1,4-additions of conjugated systems

A: Given : structure of reagent

Q: e empirical formula a compound is C 2H 4O and its molecular weight was determined to be approximatel...

A: Given; molecular mass = 44 g/mol

Q: Copper(II)-ammonia system 1. Place 1 mL 0.1 M CUSO̟ into a test tube. Then, add 5 drops 1. 00 M NH,....

A: Here we have to write observation and net ionic reaction of Cu2+-ammonia system

Q: 41) A teenage child in Wisconsin throws a chunk of sodium metal into a lake consisting of freshwater...

A: Given: mass of sodium = atomic number of fluorine = 9 kg = 9000 g density of water = 1.01 g/mL heigh...

Q: Write a balanced ionic equation for this acid-base reaction: 2CsOH(aq)+H2SO4(aq)→ write net ionic e...

A: Given, a)  acid base reaction 2CsOH(aq) + H2SO4(aq)→ Balanced ionic equation = ? Net ionic equation ...

Q: How many grams of magnesium are required to produce 3.000 kg of Si? (At mass: Mg=24.31; Si=28.09) Si...

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Q: Which of the following reactions is a non-markonikov's? a. CH3CH=CH2 to CH3CH2CH3 b. CH3CH=CH2 to ...

A: A. CH3CH=CH2  +H2 ------> CH3CH2CH3 This is  hydrogenation reaction this is non markonikovs addit...

Q: Theoretical yield of chemical reactions Aqueous hydrobromic acid (HBr) reacts with solid sodium hydr...

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Q: Show all pertinent solutions neatly, orderly and completely. 1. NaMnO4 2. So32 3. KIO4 4. Nazs203 5....

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Q: How would I solve for the molarity of the unknown CaCl2 solution

A: The quantitative analyses uses various techniques and methods to quantify the amount of analyte pres...