1. The half-life of Ga-67 is 77.9 hours. How long will it take Ga-67 to decay and lose 95% of its radioactivity?

Q: 10. Rate = k [X][Y]0.5. The reaction order with respect to X is a. 1.5 b. 1.0 с. 0.5 ning aleast oeo…

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Q: Calculate the pOH of a 0.20 M solution of pyridine, C5H5N. The Kb value for C5H5N is 1.7 x 10-⁹. O…

A: we have to calculate the pOH of 0.20 M pyridine

Q: Calculate the reaction quotient (Q) for the constructed voltaic cell. Using the solutions with the…

A: Solution -

Q: A mixture of argon and mercury vapor are often used in advertising signs. The threshold value to…

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Q: reading the measurements provided by the volumetric apparatus, the eye must be at the same level as…

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Q: cell phone emits a radio signal with a frequency of 1.910 x 10^9 Hz. Determine the wavelength

A: Frequency is inversely proportional to wavelength

Q: 18. The thermochemical equation for the formation of ammonia from nitrogen and hydrogen is as…

A: Le Chatelier's principle: This principle is used to predict the effect of a change in conditions on…

Q: 24. At what temperatures will a reaction be spontaneous if A,H° = - 62.4 kJ and A,S -301 J/K?

A: At what temperatures will a reaction be spontaneous ?

Q: An indicator of pKa = 6.5 can be used for the titration of a reaction that reaches equilibrium at…

A: Indicator in an acid base titration helps to identify the equivalence or end point of titration. It…

Q: (s). 1. For the reaction, 2 N2Os(g) →4 NO2(g) + Oz(g), the rate of formation of O2(g) is 4.0 x 102…

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Q: A solution of HCl at a certain temperature has a density of 1.159 g/mL. The mole fraction of the…

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Q: NaOH (aq) Ni(NO3)2 (aq) complete ionic equation: net ionic equation:

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Q: 2. In the following reaction at equilibrium: 2CrO, (aq, yellow) + 2 H30* (aq) Cr202 (aq, orange) + 3…

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Q: 31. Which of the following liquids would you expect to have the lowest vapor pressure at room…

A: In this question, we will see that which compound have the lowest vapour pressure at room…

Q: In a certain experiment 25.0 g of NaCN (molar mass = 49.01) was produced from 40.0 g of N2 and an…

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Q: Determine if the following reaction is spontaneous at 298K Enthalpy = -269.3kJ/Mol Entropy =…

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Q: The decomposition of HI at low temperature was studied by injecting 2.50 mol of HI into a 10.32-L…

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Q: For the aqueous [Hg(NH3)4]2+ complex Kf=1.911019 at 25°C. Suppose equal volumes of 0.0090M HgNO32…

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Q: Benedict’s solution can be used to distinguish between: a) fructose and glucose b) maltose and…

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Q: Which are true about the Meisenheimer complex? Select the correct response(s): It is positively…

A: A meisenheimer complex is negatively charged intermediate formed by attack of a nucleophile upon one…

Q: Estimate the average mass of element Y, if it is composed of two isotopes. The first isotope have a…

A: Average atomic mass = f1M1 + f2M2 +… + fnMn Where f = fraction representing the natural abundance of…

Q: 11. The elementary steps for the catalyzed decomposition of dinitrogen monoxide are shown below.…

A: The elementary steps for the catalyzed decomposition of dinitrogen monoxide are -

Q: Which processes are increases in entropy in a substance? Check all that apply. boiling water…

A: Entropy is the measure of degree of randomness or disorderness.   we know the entropy order is:- GAS…

Q: Is the statement true of false? Support the answer a. For a fixed amount of a perfect gas,  U and H…

A: According to the first law of thermodynamics, the enthalpy change of a system is related to the…

Q: disregard the answers already given. Please show your work in the same format though. THANKS. It has…

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Q: .Given the reaction at equilibrium: 2 A(g) + 3 B(g) A2B3(g) + heat Which change will not affect the…

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

Q: Propose a mechanism to account for the following reaction CH3 cha nahod CH₂Cl AICH H₂C

A: We have to propose a mechanism for the given transformation. The given reaction is an example of an…

Q: 3.Given the close system at equilibrium: CO2(g) CO2(aq) As the pressure on the system increases,…

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Q: A chemist designs a galvanic cell that uses these two half-reactions: half-reaction standard…

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Q: Q(3): Figure below shows a plot of the logarithm (to the base 10) of the diffusion coefficient…

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Q: At a certain temperature the rate of this reaction is first order in CICH₂CH₂Cl with a rate constant…

A: Rate constant (K)= 0.00307 s-1 Initial concentration = 0.260 M Final concentration=? Time (t)= 750…

Q: Draw a stepwise detailed reaction mechanism for the following reaction. HO + CgHsCHO H20 + `OH

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Q: Uranium-235 decays spontaneously by nucleon emission. a) Write a balanced equation to show the decay…

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Q: Draw and name compounds that meet the following descriptions: a. Four esters having the formula…

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Q: 5. Which of the following equations shows that isoquinoline, CoH;N, behaves as a Bronsted-Lowry base…

A: According to bronsted -Lowry concept base are those species which accept proton and after accepting…

Q: 1. Hydrogen gas is dangerous because it explodes spontaneously and explosively. In the hydrogen gas…

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Q: Choose the IUPAC name of the compound below. G O 5-Methyl-3-propyl-2-hexanone O 3,3-Dimethylheptane…

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Q: The Ksp of CaCO3 at a certain temperature is given to be 7.3 × 10-9. What is the molar solubility…

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Q: L. Please give the principal organic product(s) of each reaction, a) 1. O3 2. Zn/H,O b) Na/NH, c)…

A: Given,

Q: A solution of NaOH has a pH of 9.52. What is its pOH, [H3O+], and [OH-] at 25℃?

A: Given-> pH = 9.52

Q: CANNOT form hydrogen bonds with water? A) (CH3CH2)2NH B) CH3CH2OH C) (CH3CH2)3N D) CH3CH2NH2 E) All…

A: For the formation of hydrogen bonding ,the hydrogen atom must be between most elctrectronegative…

Q: Determine he nmber of atome of o 41.2 gooms of çc Hip OG .

A: Mole can be defined as a standard unit for measuring large quantities of very small entities such as…

Q: 9. What are two factors that affect the kinetics of chemical reactions and were tested in the lab?…

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Q: 2. How many liters of O, will be needed to react with 1.783 mol of C? (Rxn occurs at STP). _H, (g) +…

A: Balanced chemical equation: 6H2 (g)  +  4C (s)  +  O2 (g)  ----->  2C2H5OH (g)

Q: 31.A child weighing 22 Ibs comes into the clinic with an ear infection. The doctor prescribes the…

A: We would solve it using dimensional analysis method.

Q: Required: Volume of water Normality of HCl Normality of NaOH

A: Given as The volume of HCl=94.92 mL The volume of NaOH=43.76 mL The volume of water needed for a…

Q: 1.1 State the first law of thermodynamics 1.2. What is the difference between isobaric process and…

A: 1.1 The statement for first law of thermodynamics: The total energy of an isolated system is does…

Q: What are some of the analytes typically analyzed using  reverse-phase ion-pairing chromatography

A: The detailed answer of the given question is as under:  OLIGONUCLEOTIDES are short, single or double…

Q: Systematically name the following compounds.

A: According to IUPAC nomenclature, first we have to select the longest carbon chain as parent…

Q: Write down the identification reactions for lodine. Specify the reaction conditions

A:

Writing and Balancing Nuclear Equations

A nuclear equation is a symbolic representation of a nuclear reaction using certain symbols. It is studied in nuclear chemistry and nuclear physics.