Why is the blank solution needed in spectrophotometry?  A. A blank solution is used to clean the spectrophotometer b. A blank solution is used to calibrate the spectrophotometer readings: they document the baseline response of the environment- instrument- sample system

Q: Write the IUPAC name of the carbonyl compound and alcohol used in the synthesis of the following…

A: Given Hemiacetal compound. We need to write the IUPAC name of carbonyl compound and alcohol used in…

Q: Name the compound using the IUPAC system. O₂N. Br NO₂ NH₂

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Q: Suppose a reaction has ∆H = -28 kJ and ∆S = -60J/K. What is the cross-over temperature? Is it…

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Q: ? 1. (CH3)3COK 2. CH3CH₂CH₂Br O

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Q: Attach a graph of In k vs I/T. Calculate the slope of your straight line Determine the Activation…

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Q: For a reaction at constant temperature, A + B + C ⇒ ABC [A]*, M [C]², M 0.25 0.25 0.25 0.75 [B], M…

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Q: If a chemical reaction has a positive AH and a positive AS, then A) it will be spontaneous at all…

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Q: Consider the preparation of nitrobenzene (C_(6)H_(5)NO_(2)), starting with 15.6g of benzene…

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Q: When a solution is made from 26.6 g of an unknown nonelectrolyte dissolved in 186.2 g of solvent,…

A: The given data is as follows:           The mass of unknown nonelectrolyte = 26.6 g The mass of…

Q: On a day when atmospheric pressure is 76 cmHg, the pressure gauge on a tank reads the pressure…

A: Ideal gas equation is the equation which obeys gas laws under all conditions of temperature and…

Q: If F2 has has 5.70x10^25 particles, how many liters of gas are there at STP?

A: Given  Number of particles of F2 = 5.70×1025 particles Volume at STP = ?

Q: how do you what significant figure to round it up after completing the solution

A: Average molecular weight of an atom(M) = f1m1 + f2m2           Where f1 and f2 are fractions of the…

Q: Consider the multistep reaction below. What is the balanced chemical equation of the overall…

A: =>Here two steps of a recation is given. => To get overall reaction we have to add these both…

Q: C2H5OH(l)+3O2(g)→2CO2(g)+3 H2O(l)ΔH∘2=−1370kJ/molrxnC2H5OH(l)+3⁢O2(g)→2CO2(g)+3…

A: We have to use Hess's law to get the value of C2H4(g)+H2O(l)--->C2H5OH so, we will have to add…

Q: Consider these reactions, where M represents a generic metal. 2 M(s) + 6HCl(aq) - > 2 MC13(aq) + 3…

A: According to the question, The given reactions are, eq-1   2Ms+6HClaq→ 2MCl3aq+3H2g          ∆H =…

Q: What is the empirical formula of a compound composed of 3.25% hydrogen (H), 19.36% carbon (C), and…

A: Mass of 1 mole of a compound = Molar mass of the compound Consider a compound A2BC2. In one mole of…

Q: If the molecule of an imaginary substance is CO4, calculate the molar mass of the imaginary…

A: we have to calculate the molar mass of CO4 molecule

Q: A flashbulb of volume 2.40 mL contains O2(g) at a pressure of 2.30 atm and a temperature of 27.0 °C.…

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Q: Propose a reasonable mechanism for dihydroxylation with oxone (you may start with…

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Q: What is the activation energy for the isomerization of methyl isocyanide? Rate Constant Temperature

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Q: At -12.0 °C, a common temperature for household freezers, what is the maximum mass of sorbitol…

A: Given,Temperature of sorbitol solution = - 12.0 °CMass of pure water = 1.50 kgSorbitol is a…

Q: Silicon is the second most abundant element in the Earth's crust, and its compounds can be as…

A: Chemical element silicon has the symbol Si and atomic number 14. It is a tetravalent metalloid and…

Q: In a volumetric determination of an analyte A, the data obtained and their standard deviations are…

A: The coefficient of variation, CV is the ratio of standard deviation to the mean. The titrant volume…

Q: The specific heat of iron is 0.116 cal/g °C. Assuming that no heat is lost during the experiment,…

A: Given data  specific heat of iron = CFe = 0.116 Cal/g-°C Mass of iron. MFe = 30.0 g Initial…

Q: Match the equation to the correct property.   q=c*m*ΔT = constant pressure enthalpy ΔH=J/mol =…

A: Answer: In this question we have to define each term mentioned.

Q: How many grams of NaBr are needed to prepare 27.5 g of 7.46% (w/w) NaBr solution in water? How many…

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Q: 3. In some cases, the relationship between two variables is not linear, but the data can be…

A: It is given that volume is the independent variable. In a graph, the independent variable is taken…

Q: If the atomic weight of magnesium is 24.3g/mol, calculate how many magnesium atoms does 5g…

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Q: The government requires that the vinegar content be at least 4.00 (% m/v). The graph shows Gram…

A: Given data is The concentration of the NaOH solution = 0.111 mol/L Volume of the vinegar sample =…

Q: Which of the following statements is FALSE? The rate of vaporization for simple molecules with…

A: Vaporization: The conversion of a substance from its liquid state to gaseous state is considered as…

Q: Convert 5.17x10^24 atoms of O2 to mol

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Q: Q3. Describe the preparation of (a) 500 mL of 4.75% (w/v) aqueous ethanol (C₂H,OH, 46.1 g/mol). (b)…

A: According to the question, w/v% for the ethanol solution is given by = 4.75 %w/w% for the ethanol…

Q: 4. If you wanted to measure out the following volumes using micropipettes, which one would you use…

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Q: The percent yield of this reaction is 65.0%. 2Al(s) + 3 F₂ (g) →→→ 2AlF3 (s) Determine the mass, in…

A: Given Mass of aluminium = 188g Percentage yield= 65%

Q: It is determined that a particular chemical reaction has ΔHorxn = -115 kJ and ΔSorxn = -263 J K-1.…

A: This question belongs to Chemical Thermodynamics. Given that  ΔHorxn = -115 kJ = -115000J and ΔSorxn…

Q: 2 3. a. Estimate the lattice energy for the fictitious compound KF₂ from the Born-Mayer or…

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Q: Do octane (C8H18) and hexane (C6H14) have the same intermolecular forces as water and methanol? If…

A: The organic compounds given are hexane (C6H14) and octane (C8H18).

Q: If a Sodium (Na) atom has 13 neutrons, what is its mass number?

A: The mass number of an atom is the total number of protons and neutrons in the nucleus of the atom.…

Q: Determine the equilibrium constant, Kgoal, for the reaction 4PC15 (g) P4(s) +10C12 (g), Kgoal = ? by…

A: Answer: In this question we have to establish the relation between Kgoal, K1 and K2 for the given…

Q: -500 ml 500 ml <-800 T <-350 200 Soo Molecular Scale Soo Molecular Scale Experiment Set Maghesum…

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Q: Determine the sign of ΔSsys for the following chemical reactions without doing any calculations. a)…

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Q: A reaction has ΔrH∘=ΔrH∘= -136 kJmol−1kJmol−1 and ΔrS∘=ΔrS∘= 305 JK−1mol−1JK−1mol−1 .   At what…

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Q: Please give example and explanations of each words: Volume Percent Weak Electrolyte Weight Percent

A: An electrolyte is a substance that, when dissolved in a solution or melted, dissociates into ions,…

Q: . C₂H₁₁OH + O₂ →→→→H₂O + CO₂ (This equation rep- resents the combustion of amyl alcohol.)

A: We know that, In a chemical reaction Number of atoms of each element are remain same both side.…

Q: calculate the molarity of a 3.77 m aqueous solution of iron (III) chloride with a density, p = 1.047…

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Q: A cylindrical object weighing 165.01 g had a diameter of 2.59 cm and a length of 11.6 cm. What was…

A: Given data, Mass of object = 165.01 g Diameter = 2.59 cm Length = 11.6 cm

Q: Based on the location of the elements magnesium (Mg) and bromine (Br) in the Periodic Table, which…

A: We have to select the correct statement for the compound MgBr2