density

Q: Reaction 1: A first order reaction (A à products) has the rate constant k = 0.483 min-1 (Rate = k[A]...

A: Using the integral rate law equation for 1st order and 2nd order to determine. Which will take more ...

Q: Ka(HOAc) = 1.8 x 10-5. A 1-L buffer solution is prepared by mixing 0.35 mol HOAc and 0.45 mol NaOAc....

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Q: Write the equilibrium constant expression, K, for the following reaction: If either the numerator o...

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Q: Br H2O

A: Given reaction is substitution reaction.  

Q: How mony moles are Dresent in 250g BalOH)a:

A: Given, Mass of Ba(OH)2 = 250 g Moles of Ba(OH)2 = ? Note: Molar mass of Ba(OH)2 = (137.34 + 2×16 + 2...

Q: Which of the following is true In an acid-base titration A. Water is never formed B. You are tryi...

A: In general acid-base titration can be written as   Acid + Base = Salt + Water

Q: d

A: This is sulphonation and iodination of benzene

Q: What are the reagents to complete this reaction? H;/Pt NABH4, MEOH H2/Lindlar's catalyst Li, EENH2, ...

A: Reduction is the process to gain the electrons or to loss the hydrogen Or to gain the hydrogen atoms...

Q: There is one or more chiral carbon(s) in: a) 2,3-dibromopentane b) 1-bromo-1-chloropentane c) 1-brom...

A: chiral carbon is a carbon atom that is attached to four different types of atoms or groups of atoms.

Q: If 12 moles of Al(s) react as completely as possible with 1.5 mol of Sg(s) according to the followin...

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Q: Acidified potassium dichromate(K2Cr2O7/H+) may be used to transform 3-methylpentanal into another co...

A: The  IR spectroscopy  helps to identify  the functional group in between product and Reactant. 

Q: Consider the reaction shown below. How many moles of P4010(S) are needed to produce (release) 915 kJ...

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Q: Methyl iodide (CH3I) can be used to modify DNA in solution. It takes the following mechanism for thi...

A: Rate of reaction is rate at which concentration of reactant decreases and that of product increases....

Q: Find: molarity of 0.444 mol of CoCl2 in a 0.654L of solution 1. 0.976M 2. 0.679M 3. 0.796M 4. 0....

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Q: The hybridization of the carbons in ethene are and the bond angles around each carbon are O sp3 109....

A: We have given that  The hybridization of the carbons in ethene are                      and the bond...

Q: a commonly used catholic protection for iron is zinc . This is because; (choose the most correct ans...

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Q: How many grams of nickel(II) fluoride, NiF2 , are required to make a 8.78 %(w/v) aqueous solution in...

A: Given that : The volume of aqueous solution = 300 mL %w/v of nickel(II) fluoride = 8.78 %

Q: Question 11 What is/are the best reagent(s) to carry out this transformation? O 1. Hg(OAc)2, H2O 2. ...

A: Ozonolysis: Ozonolysis refers to the organic reaction in which the multiple carbon-carbon bonds are ...

Q: How many mL of 0.531 M HCl are needed to dissolve 6.97 g of MgCO3? 2HCl(aq) + MgCO3(s)  MgCl2(aq) +...

A: Given data: The molarity of HCl is 0.531 M. The mass of MgCO3 is 6.97 g. To calculate: The volume of...

Q: Which of the following substances does have the lowest vapor pressure at 25 oC? Choose one option on...

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Q: Which of the following statements concerning the structure of alpha-amino acids is correct? A. The a...

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Q: 26.   A concentrated HCl(aq) has the molarity of 10.6 M and density of 1.59 g/mL., Calculate the mas...

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Q: Three gases: CO, Ar, and NO, are mixed in the same container. The temperature in the container is 28...

A: Dalton's law: Dalton's law of partial pressures states that in a mixture of non-reacting gases, the ...

Q: define pesticide treadmill.

A: Agriculture chemistry deals with the different types of chemicals and phenomenon used in agriculture...

Q: Aluminum crystallizes in a compact cubic packing structure, its metallic radius is 1.25 A (1A = 10-1...

A: Given that -  Metallic radius of aluminum  = 1.25 A°  And, it's molar mass = 26.98 g/mol  (1 A° = 10...

Q: You will need to take logs and antilogs to solve many chemistry problems. For practice, complete the...

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Q: When 168 mg of a certain molecular compound X are dissolved in 25.0 g of cyclohexane, the freezing p...

A: Solution -

Q: After collecting all the gas, the student pushed down the piston to half of the original Volume and ...

A: This is a problem from thermodynamics. If he pushed down the piston to half of the original Volume a...

Q: 40.0g of KClO3 is subjected to heat until it decomposes entirely. Determine the theoretical yield of...

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Q: NANH2?

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Q: The reaction: I- (aq) + OCl- (aq) à IO- (aq) + Cl- (aq) was studied by using the initial rate method...

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Q: Which of the following quantum numbers tells the three-dimensional shape of an atomic orbital? * a. ...

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Q: The product of the reaction of 1-methylcyclohexene with OsO4 followed by NaHSO3 is: CH3 CH3 CH3 OH H...

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Q: Step One Add the same expression to each side of the equation to leave the term that includes the va...

A: Solving for ln Q:

Q: lithium battery is being developed. Its voltaic cell is constructed based on Li metal electrode and ...

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Q: Find the mass of MnCl2 that is produced when 0.09g of Cl2 is created when 0.091 of Cl2 is generated?...

A: The reaction is given as, MnO2 + 4HCl ----> 2H2O + Cl2 + MnCl2 And 0.09g of Cl2 is created when 0...

Q: Write an equation to show that hypochlorous acid , HClO , behaves as an acid in water.   + H2O =  ...

A: Answer - HClO (aq)+ H2O (l)--------> H3O+(aq) + ClO-(aq) In this equation HClO donate H+ ion H2O ...

Q: How many milliliters of 6.70 M hydrobromic acid solution should be used to prepare 5.00 L of 0.600 M...

A:

Q: What is the pressure of N2 (g)  in Torr if 0.582 atm of O2 (g) and  965Torr of He(g)  are mixed with...

A: Given , Total pressure = 2250 mmHg Since , 1 torr = 1mmHg  So, Total pressure  = 2250 torr Partial p...

Q: Propose a synthesis of (1R.2R)-1,2-dimethylcyclopropane from propene. You may use any alk des and in...

A: Solution: This is the chili tropic reaction in which cyclopropane ring is formed this this is called...

Q: e highest boiling point?

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Q: A solution contains 125 g of a compound and 555 g water.   The boiling point  of the pure solvent is...

A: Given :-  Mass of compound = 125 g   Mass of solvent = 555 g or 0.555 kg  boiling point  of the pur...

Q: How many electrons can the first energy level (n=1) hold? * а. 1 b. 2 с. 8 d. 0 How many orbitals ca...

A: The maximum number of electrons that can fit in a shell having principal quantum number n is = 2n2  ...

Q: Complete the following table.   Acid Ka pKa A HNO2 4.5×10-4   B HClO 3.5×10-8   The weaker acid...

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Q: given the following salts (LiF, KBr, CaO, BaS, MgCl2) put them in order of Increasing magnitude of l...

A: Lattice energy is directly proportional to the charges on the ions. Lattice energy is inversely prop...

Q: any grams ore prosent in 5.39 modes

A: Given: The moles of AgNO3, (n) = 5.39 mol. The molar mass of AgNO3, (M) = 169.87 g/mol.    

Q: Which compound in this list corresponds with the IR spectrum shown?

A:   IR spectroscopy :  Functional groups in organic copmounds are identified by IR spectroscopy  IR f...

Q: What is the value the azimuthal quantum number, I, for the d-subshell? * а. О b. 1 с. 2 d. 3 orbital...

A:

Q: What is the frequency of a photon of UV light (in Hz or s1) whose wavelength is 1.25 x 10-7 m? Use s...

A: We know that Speed = wave length × frequency  

Q: The electron geometry and the molecular geometry of the S atom in SO, is and the number of bonding a...

A: Given that -  Sulfur dioxide anion , SO2- In this ion,  Sulfur is a central atom which contains six ...

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.