density

Q: A burette had an initial volume of 5.2 mL and a final volume of 32.6 mL, what is the amount of solut...

A: Given data is as follows: The initial reading of the burette V1= 5.2 mL The final reading of the bur...

Q: Draw the structure of C4H8O2 and indicate which sets of hydrogens correspond to which signal in the ...

A: The solution is as follows:  

Q: OH p-TSOH, C6H8

A: In this reaction, firstly carbocation is generated then ring expansion take place then base abstract...

Q: Which of the following is/are true regarding instrumental methods of analysis? a. these methods hav...

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Q: Table of Volume and Pressure V(ml) 1/V P(psi) 8.00 64.31 10.86 47.38 15.92 32.32 18.50 27.81 21.33 2...

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Q: Draw an alkyl halide that produces ONLY the following alkene in an E2 elimination. Ignore any inorga...

A: We have to draw an alkyl halide that produce only the following alkene in an E2 elimination reaction...

Q: Balance the following redox reaction in acidic solution. NO2^(aq) + MnO4 (aq) → NO3 (aq) + MnO2(s)

A: The objective of the question is to balance the chemical redox reaction in acidic conditions.

Q: Shown below is the molecular orbital diagram for N2. Does N2+ have a shorter or longer bond length?

A:

Q: Initial pH                                  2, 4 ,6   ,8,  10 and 12 Final pH                      ...

A: A question based  on pH concept, which is to be accomplished.

Q: Write the name or formula for the following compounds (hint: use prefixes). Name Formula Sulfur tetr...

A: The formula of given names as:-  Sulphur tetrabromide -  SBr4  Dinitrogen trioxide - N2O3  Dichlori...

Q: Mass of AGNO, in the 10 mL unknown solution = (mass = mole x molar mass) Calculate mass of AgNO, in ...

A:

Q: Order the following from largest to smallest | Mercury, Hg | Gold, Au | Platinum, Pt 4 Iridium, Ir :...

A: Part A. Ir>Pt>Au>Hg. Part B. Ra>Ba>Sr>Mg.  

Q: Question 4 of 9 How many moles of Agl will be formed when 75.0 mL of 0.300 M AGNO. is completely rea...

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Q: How many chiral centers are in the following molecule? HO, Lovastatin eight ten nine seven six

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Q: 3. Give the mechanism and product(s) for the reaction below. Br-Br

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Q: oles of I-(x 10) noles of Pb2+ (x 10-5) noles of Pb2+ (X 10-5)

A: 1) 5 mL of 0.012 M Pb(NO3)2 gives 0.012 *5mmol= 0.06 mmol of Pb2+.

Q: Vhich statement best describes how many chlorine atoms are needed when making Barium chloride? O2 ch...

A: Formula of barium chloride is BaCl2  The valency of Ba is +2 so it can donate 2 e- .  The valency of...

Q: Given that the value of R is 109737.31 cm-1 calculate the energy in wavenumbers (cm-1) for the n = 5...

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Q: Give the major product(s) of the following reactions, if there is a reaction. For electrophilic arom...

A: The reactions are as follows:  

Q: The specific heat for gold  is 0.13 J/g oC. How much heat energy does it take to heat 95.3 g of gold...

A: Energy needed = mCp ∆T m is mass of gold sample Cp is specific heat for gold   ∆T is change in tempe...

Q: In the laboratory, a general chemistry student measured the pH of a 0.528 M aqueous solution of ethy...

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Q: (Q71) Which of the following accounts for elements in groups exhibiting similar chemical behavior? A...

A: In a periodic table, elements are arranged in a horizontal rows and vertical column. Horizontal rows...

Q: For the reaction shown below, circle the major product obtained when the | reaction is allowed to re...

A: Note: HCl addition to 1,3-butadiene type molecule results kinetic product ( see below).

Q: What is the oxidation state of each element in K,Cr,O,? K Cr What is the oxidation state of each ele...

A: Oxidation of each element in a compound depends on the group of element in which it is present.

Q: The molecules in the following set do not include which of the following shapes? XEF2, BF3, BrF3, CI...

A: To check which of the shape is not included , we would draw the molecular geometry of all these mole...

Q: Which of the following could produce a buffer when added in an appropriate amount to 0.1 M KNO2? NA...

A: Buffer solution: The solution that resists the change in pH is known as a buffer solution. The buffe...

Q: What is the mass in grams of NaCN in 120.0 mL of a 2.40 x 10 M solution? STARTING AMOUNT ADD FACTOR ...

A: Given:  Volume of solution = 120 ml = 0.120 L  Molarity of solution= 2.40 × 10-5 M 

Q: . How much heat energy does it take to heat 95.3 g of gold from 11.2 oC to 63.3 oC?

A: Heat energy needed = m Cp ∆T m is mass of gold sample ,Cp is heat capacity and ∆T is temperature cha...

Q: f In 2 Half-Life uses the formula N (t) = Noe . %3D No = Initial Amount t = time %3D h = length of h...

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Q: Which of the following "stresses" applied to the following reaction, initially at equilibrium, would...

A: Answer- According to Le chateliers principle any change made at equilibrium will shift equilibrium i...

Q: Assign E or Z configurations to each alkene below. CN CH2CH2OH CH3

A: Rules of E and Z naming: When the two groups with major priority are on the same side of the double ...

Q: How many atomic orbitals make up the set with n = 6 and l = 3? What label is given to this set of or...

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Q: 1. Classify the following reactions as endothermic or exothermic: a. Ca(s) + Cl2(g)→ CaCl2(s) b. H2O...

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Q: Which of the following compounds has/have substituents cis to each other? CH3 CH3 Br Br CH3 CI 11 II...

A: At 1,2 position of cyclohexane  If substituent is at ( axial - axial ) or ( eq - eq) then that struc...

Q: Balance the following redox reaction in basic solution. SO;²- (aq) + Cr2O,7-(aq) → Cr³*(aq)+ SO?-(aq...

A: Given that : We have to balance the following redox reaction in basic solution : SO32-(aq)  +  Cr2O7...

Q: 7. Supply the missing reagents for the reactions shown CI

A: The reactions are as follows:

Q: Melting point data of salt and sugar are noted in the table above. Which of the following best expla...

A: Option A) When sodium chloride melts, intramolecular attractions are being broken. These are stronge...

Q: 9. Draw the structure of product, substrate or condition in the following reactions (should clearly ...

A: The products formed during the reaction depends upon the substrate and the reaction condition. All r...

Q: Atomic Radius Trend Part A: Which of the following elements is the smallest? Manganese, Mn (#...

A:

Q: Which stereoisomer(s) of the product was isolated if the melting range was found to be 234.5-235.5C?...

A: Note : trans stilbene + trans addition will give meso compound. trans stibene reacts with bromine wi...

Q: 10. Use retrosynthesis to propose a method of producing 2-chloro-2,3-dimethylhexan-3-ol from 3.3-dim...

A: Details retrosynthesis and forward synthesis are shown in image.  At first starting material undergo...

Q: 1. Use the given information to calculate the enthalpy of reaction for the following reaction: P4010...

A:

Q: Heat required?

A: Given that: Volume of bromine = 15.8ml Density = 3.12g/ml Density = mass ÷ volume Mass of bromine = ...

Q: Draw the product of an SN2 reaction shown below. Include all lone pairs. Use wedge and dash bonds to...

A:

Q: Assume we are to tackle a complex aqueous equilibria problem using the systematic process we learned...

A: Hii there, As there are multiple question posted. we are answering first question. If you need furth...

Q: Br2(g) + 3F2(g) ⇌ 2BrF3(g)     Kp = 5.4 x 108 Assume 0.48 atm Br2 and 0.61 atm F2 are placed in a c...

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Q: Lead Chloride in an Aquarium Water contaminated with lead is used in an aquarium. Thankfully, much o...

A: Given to us :- Ksp = 1.6*10-5 A). [Cl-] =0.005 M  B). [Cl-] =0.5 M    

Q: How many unpaired electrons are present in the ground state of an atom from each of the following gr...

A: An Unpaired electron is an electron that is present in the orbital of an atom singly rather than a p...

Q: Calculate the pKa of the weak acid HA, given that a solution that is 0.357 in HA and 1.24 in A- has ...

A: Buffer solution is made of weak acid and it's conjugate base or weak base and it's conjugate acid. 

Q: 359 mL of 0.136 M Na2SO3 are mixed with 526 mL of 0.203 M HCl. If 2576 J of heat are absorbed in the...

A: ∆H of a reaction is written in unit kJ/mol . Sign of ∆H depends on whether heat is absorbed or relea...

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.