Describe the characteristics that a crystal obtained through recrystallization must have.

Q: CaCO3(s) ---->     CaO(s)      +      CO2(g)   If 3.32 g CaCO3 is decomposed, how many grams of ...

A: Given reaction: CaCO3→CaO+CO2

Q: Define weak acid-strong base titration?

A: Weak-acid- Strong base Titration: The titration of a weak acid with a strong base involves the direc...

Q: A 59.0 mL aliquot of a 1.60 M solution is diluted to a total volume of 258 mL. A 129 mL portion of t...

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Q: The concentration of H3O+ in a solution is measured to be 6.27 x 10-3 Report the pH of the solution ...

A: The pH of a solution is calculated by using the following expression: pH = -log[H3O+] where [H3O+] i...

Q: For a hydrogen atom, calculate the wavelength of light (in m) that would be emitted for the orbital ...

A: The ground state energy level has value 1. The excited state energy level is 5. The value of Rydberg...

Q: the balanced equation: combustion of ethanol C2H5OH(l) + 3O2(g) ---- 2CO2(g) + 3H2O(g)   how many g ...

A: The balanced reaction of combustion of ethanol is as follows: C2H5OH(l)+3O2(g)→2CO2(g)+3H2O(g)

Q: An aqueous solution containing 5.41 g of lead(II) nitrate is added to an aqueous solution containing...

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Q: Determine the concentration of all species in solution when you mix the following individual solutio...

A: If we mix NaCl solution with each other then  Mole of NaCl= 14.52×0.01=0.1452mole So total voulme=14...

Q: In a titration, the equivalence point is the moment at which the number of moles of H+ from the acid...

A: Molarity gives the concentration of a solution. It gives the number of moles of the solute dissolved...

Q: 6. If you had 10 g of butane and 10 g of oxygen, what is the maximum amount of carbon dioxide (in gr...

A: Number of moles  is equal to the ratio of mass to molar mass. Number of moles=MassMolar mass Percent...

Q: Ultraviolet radiation is characterized as UVA, UVB, or UVC. Arrange these types in orderof increasin...

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Q: A.) A student measures the molar solubility of calcium chromate in a water solution to be 2.56×10-2 ...

A: Solubility means maximum amount of solute that can be dissolved in per liter of solution. Solubility...

Q: If 6.82 g of Na2 CO3 is dissolved in enough water to make 250, mL of solution, what is the molar con...

A: Step : 1           Calculate the molar concentrations of the following.

Q: The group most likely responsible for the peak at "1" is most likely: O C=N OC=C (aromatic) O OH O C...

A: IR spectroscopy is also called as infrared spectroscopy. This is the called so because of the intera...

Q: The equilibrium constant is given for two of the reactions below. Determine the value of the missing...

A: The given equilibrium constants are: 2NO+O2↔N2O4  Kc1=4.5N2O4↔2NO2         Kc2=3.5 

Q: Sketch the three-dimensional structure of the Hydrogen carbonate ion. Clearly indicate the electroni...

A: The electronic geometry and shape for the compounds are to be examined by the VSEPR theory.

Q: Calculate the overall net charge of the following polypeptide at pH = 2.0Gly-Pro-Glu-Asp-Leu-His-Ile...

A: A peptide is made of amino acids bond together by a peptide bond also called amide bond. a dipeptide...

Q: Complete and balance the following reactions and write the major products. a) CH3 - CH - CH - CH2 - ...

A: When a hydrocarbon reacts with oxygen then, it will form carbon dioxide and water and liberate huge ...

Q: In the reaction below, 7.0 mol of NO and 5.0 mol of O₂ are reacted together. The reaction generates ...

A: The percent yield of a reaction is calculated by using the following expression: % yield = (Actual y...

Q: Can I please have help with these

A: The addition of HBr into a double bond occurs through a carbocationic intermediate. The more stable ...

Q: You prepare several dilutions of an unknown compound. You measure the absorbance of each solution at...

A: The graph for concentration-Absorbance is shown below in which slope of the curve is determined.

Q: 17.106 Isopentyl alcohol reacts with pure acetic acid to form iso- pentyl acetate, the essence of ba...

A: Yes this approach is reasonable Because when H2O will finished then in product side no of mole of wi...

Q: Show your all calculation give me full solution

A: An acid–base titration is a process of quantitative analysis for determining the concentration of an...

Q: Determine the number of atoms in 0.715 g of gold. Determine the number of moles of electrons in 0.33...

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

Q: With organolithium and organomagnesium compounds, approach to the carbonyl carbon from the less hind...

A: phenylmagnesiumbromide reacts with the 4-tertbutylcyclohexanone from the less hindered side .    

Q: Q. Write fragments in mass spectroscopy of CH3- O-CH2-CH2-CI , m/z 14, 15, 27 ,28 ,45 ,63 ,77 ,94. m...

A: The mass fragments of the CH3-O-CH2-CH2-Cl are: (a) 14    (b) 15    (c) 27    (d) 28    (e) 45     (...

Q: Highest freezing point Na, PO4 Na, SO, 4 NH,CI Lowest freezing point

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Q: 1) Classify the following dienes and polyenes as isolated, conjugated, cumulated or some combination...

A: Dienes and polyenes are classified under various names such as conjugated, isolated, cumulative etc....

Q: Chemistry Question

A: The given spectrum is of NMR. Based on the different nuclear spins, in the presence of an external m...

Q: How many grams of potassium dichromate, K2Cr2O7, are required to prepare a 250 mL solution whose con...

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Q: What specifically occurs when a liquid mixture is distilled?     1)    Components of a solid mixture...

A: The process in which selective boiling and then condensation of a particular component of a liquid m...

Q: Answer both questions with details solution I'll give you ?

A: Generally intensive property does not scale with system size.

Q: Palmitate and Behenate are saturated fatty acids with 16 and 22 Carbons respectively. Which would yo...

A: The saturated fatty acid contains only single bonds with it. As number of C atoms increases that is ...

Q: The density of titanium metal is 4.51 g/cm3 at 25 CWhat mass of titanium displaces 69.2 mL of water ...

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Q: Section 2.3 describes the postulates of Dalton’s atomic theory. With some modifications, these postu...

A: Since the question being asked has more than 3 subparts, we’ll answer the first 3. Please repost the...

Q: A.) Consider the following reaction:2NOBr(g) 2NO(g) + Br2(g)If 0.231 moles of NOBr(g), 0.229 moles o...

A: Hello. Since the question contains multiple parts the first part is solved. In case the solution for...

Q: Explain why the periodic trends for metal and non-metal reactivity are opposites.

A: The periodic trends are the properties related to the elements which are placed in the periodic tabl...

Q: Which one of the following notations does not represent an acceptable representation formula of pute...

A: STEP 1) Butene will have one double bond in it .  it is derived from alkene group .    

Q: The rate constant k for a certain reaction is measured at two different temperatures: temperature k ...

A: Given information:  

Q: Can you help me find out what’s wrong with my work

A: Incorrect units are used in the final answer.  Unit of molarity is M or mol/L.

Q: Why there is no suitable indicators for weak acid and weak base tritration?

A: Titration is a process of adding a solution of known concentration (or strength) to a solution whose...

Q: You are given a 1.25 gram mixture of calcium nitrate and calcium chloride. You dissolve this mixture...

A: Given, Mass of a mixture of calcium nitrate and calcium chloride = 1.25 g Volume = 200 mL = 0.200 L ...

Q: Why can a solid copper penny be dissolved in nitric acid, but not in hydrochloricacid? Modern pennie...

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Q: D. COMBUSTIBILTY Place 3 drops of ethyl alcohol in an evaporating dish. Place a lighted match stick...

A: Note: We’ll answer the first question since the exact one wasn’t specified. Please submit a new ques...

Q: In this station, you will find 400.0 mL of a 0.500 M aqueous solution of calcium chloride. What mass...

A: Molarity of any solution is given by :Molarity =Number of moles of solute Volume of solution(in mL)×...

Q: Calculate the pH of a 0.0010 M solution of HB, a hypothetical acid with K = 9.6 x 10$. (Use th metho...

A: The pH of 0.0010 M HB solution is calculated as shown below.