els Part IV: Iron content ofan unknown well water sample 34 lowo Unknown Well Water Code Unknown Well dans Water Sample Volume of unknown 5mL water sample (mL) Absorbance 0.267

Q: 1) NABH,, ELOH 2) H°, H,O

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Q: In general, native (folded) proteins are in equilibrium with denatured (unfolded) forms: Protein(fol...

A:

Q: For the ion given below: NO2- 1. Draw the Lewis Dot structure for the ion on a paper and write the...

A: Lewis structures of NO2-.

Q: A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains 2....

A:

Q: BASES: Base is one of the four classification of compounds. (Sentence 1: Bases will turn red litmus ...

A: Bases-  Any substance which contains OH ion or donate the lone pair of electron. 

Q: Given that pKa = 4.72 at 25 °C for HN3, what is the pH of 0.125 mol L-1 NaN3(aq) at 25 °C? What is t...

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

Q: 12.57 Pheromones are compounds secreted by the females of many insect species to attract males. One ...

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Q: 12.43 How is vapor-pressure lowering related to a rise in the boiling point of a solution?

A: Please find your solution below : Vapour pressure of a solvent is defined as the pressure exerted by...

Q: Calculate the change in pH that results from adding 0.160 M NaNO3 to 1.00 L of 0.160 HNO3 (aq).

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Q: 5. Look at this figure from Blankenship's book, Molecular Mechanisms of Photosynthesis. You can see ...

A: Given structure and the labelled carbon:

Q: Write the net balanced equation for the reaction of ferrocene and (NH4)2Ce(NO3)6. What is the role o...

A: Ferrocene is an organometallic compound consisting of 2 cyclopentadienyl rings bound to a central me...

Q: A student was titrating a solution of acetic acid with a sodium hydroxide solution. Determine the pH...

A: Answer: In the given acid-base titration, fix volume of acid has been taken in flask and NaOH will b...

Q: A chemist determines by measurements that 0.035 moles of hydrogen gas participate in a chemical reac...

A: Given,  Moles of hydrogen gas participate = 0.035 mol.  The mass of hydrogen gas participate is:

Q: Click in the answer box to activate the palette. Balance the equation representing the reaction betw...

A: Given statement is :  Balance the equation representing the reaction between Iron(III) oxide, Fe2O3,...

Q: 2. If a sample known to be about 17190 years old has 400 carbon-14 atoms, how many atoms were in the...

A: When organism died absorption of C-14 stops and starts diminishing. The radioactive decay follows fi...

Q: Which of the following occurs when products are added to a chemical reaction in solution or the gas ...

A: -> when reactant or product added then it follow Le-chatelier principle.    

Q: 9- Calculate the molar concentration of HNO3 (63.0 g/mol) in a solution that has a specific gravity ...

A: Molarity is a concentration term for a solution. The molarity of a given solution is defined as the ...

Q: Draw the optical isomers of CH3-CHOH-CHOH-CH3. INDICATE the absolute configuration of each chiral ce...

A: Solution                         Given that  Draw the optical isomers of CH3-CHOH-CHOH-CH3 = ?

Q: How much heat (kJ) is evolved when 4.50 g of Fe202 is reacted with excess carhon monoxide using the ...

A: Answer and explanation is given below hope you like it.

Q: (CH,(CH,),CH,) Liquid octane reacts with gaseous oxygen gas (0,) to produce gaseous carbon dioxide (...

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Q: Determine the empirical formula of a compound having the following percent composition by mass: K: 2...

A: Given value, %K=24.74% , MOLAR MASS= 39 g mol-1 %Mn=34.76 %, molar mass=54.938 g mol-1 % O = 40.50 %...

Q: ONLY use the ICE table to solve! A student  prepares a 1.9 mM  aquous solution of 4-chlorobutanoi a...

A: Given,  [C3H6ClCOOH] in mM = 1.9 mM  Calculate the fraction of 4-chlorobutanoic acid that is in the ...

Q: The pKa of acetone, CH;COCH3, is 19.3. Which of the following bases is strong enough to deprotonate ...

A:

Q: Enter the number of electrons in each energy level (shell) for each of the elements. If the energy l...

A: The no of electrons in each element equals the atomic no of that element.

Q: need help with making an ir spectrum Analysis for Cyclohexanol  that includes in a table: Ir absor...

A:

Q: Sort the following structure in increasing order of their boiling points: он A. В. C. D. Drag and dr...

A:  There is no intermolecular hydrogen bonding between ether molecules, which makes their boiling poin...

Q: PHOTOSYNTHETIC PIGMENTS 1.6 0.7 1.4 0.6 1.2E Soret 0.5 HA 0.4 0.8 COOCH 0.3 0.6 phytyl bacteriochlor...

A: Higher the wavelength shorter will be the energy gap between the two energy levels  

Q: A common laboratøry preparation of ørygen gas is the thermal decomposition of potassium chlorate (KC...

A: Given :-  KClO3 → KCl + O2  Mass of KClO3 = 28.57 g  To calculate :-  Mass of O2 (in g)

Q: What is not correct in computing for the buffer capacity, if an additional acid is added a. The volu...

A: Buffer capacity is the amount of acid or base that it can effectively neutralize.

Q: How many moles of cobalt (Co) atoms are there in 2.00 x 10 (2.00 billion) Co atoms? x 10. mol Enter ...

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Q: Enter the number of electrons in each energy level (shell) for each of the elements. If the energy l...

A: Enter the number of electrons in each energy level (shell) for Hydrogen element.,

Q: A chemical reaction occurs when 0.378g of Mg is heated in a Nitrogen environment. The product of the...

A: Mass of mg = 0.378 g Mass of product = 0.456 g

Q: Calculate straln energy for the conformer plctured below, using straln energy Increments from the ta...

A:

Q: Exam What mass of C6H1206 (glucose) is needed to prepare 450. mL of a 0.650 M solution of glucose in...

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Q: Be sure to answer all parts. Industrially, vanadium metal, which is used in steel alloys, can be obt...

A:

Q: Chemistry : is the science concerned with composition ,structure and properties of matter as well as...

A: According to the definition of Chemistry , this question can be explained as follows

Q: A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains 3....

A: The mass of water in the water bath is = 3.30 kg The initial temperature of the water bath is = 31.8...

Q: H2C- (CH2)10CH3 NaOH HC- -(CH2),CH=CH(CH2),CH3 H2Cㅡㅡ (CH2)16 CH3 ㅇ

A: Reaction of tri ester compounds with NaOH

Q: How is the solubility of oxygen in water affected by increasing temperature

A:                                   Answer    How is the solubility of oxygen in water affected by inc...

Q: How would the calculated molar concentration of the analyte be affected if the burette is rinsed wit...

A: In laboratory while we use burette for titration,we should always rinse it with water at first and t...

Q: boron trifluoride: partial pressure: Your answer is incorrect. • Total pressure in tank: Your answer...

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Q: The decomposition of XY is second order in XY and has a rate constant of 7.00×10−3 L mol−1 s−1 at a ...

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Q: 6. Lysozyme is an enzyme that breaks bacterial cell walls. A solution containing 0.150 g of this enz...

A: Given Data :  1. Mass = 0.150  2. Osmotic pressure = 0.953 torr         π = 0.953 torr × 0.00316 atm...

Q: Scientists can determine the age of ancient objects by the method of radiocarbon dating. The bombard...

A: a) Dinosaur fossils are too old to be reliably dated using carbon-14. Suppose we had a 67 million ye...

Q: A chemist measures the amount of chlorine gas produced during an experiment. She finds that 1.35 g o...

A: Calculating number of moles:

Q: 5. Consider the phase diagram of Cu-Be shown below. At 1000°C with an overall alloy composition of 1...

A: Given phase diagram:

Q: What is the role of cation during ion-dipole interactions? A.  it distorts the electron distributio...

A: Ion dipole interaction: It is defined as the interaction between ion and a molecule with permanent d...

Q: 7. Predict the major organic product and propose a mechanism for the following reaction. Show each s...

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Q: 12.45 What is osmosis? What is a semipermeable membrane?

A:   Colligative properties:  The properties which are based on number of solute particles but not on t...

Q: 1) following transformation. Choose the most suitable reactant(s), product(s), or reagent(s) for the...

A:

Spectroanalytical Methods

Spectroanalytical methods measure the wavelength and intensity of radiations that are either emitted or absorbed by a molecular or atomic species. These methods are useful for evaluating the electronic or atomic arrangement of the molecules of a given analyte.