A chemist wishing to do an experiment requiring "Ca+ (half-life = 4.5 days) needs 5.0 µg of the nuclide. What mass of 7 CaCO3 must be ordered if it takes 24 h for delivery from the supplier? Assume that the atomic mass of 47 Ca is 47.0 u. Mass = µg

Q: What do we mean by the term electronic structure? Select all that apply. a) The arrangement of the…

A: Matter is made up of atoms. Atoms consists of sub atomic particles like electrons , protons and…

Q: Calculate the potential of the solution in the titration of 50.0 mL 0.100 M Fe2+ in 1.00 M HClO4…

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Q: s Lewis acid, Lewis base, bc

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Q: Part C The salt ammonium nitrate can follow three modes of decomposition: (a) to HNO3 (9) and NH3…

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Q: A mixture containing 2.21 g each of CH4(g), C,Ha(g) and CaH,o(g) is contained in a 1.50 L flask at a…

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Q: Question 15 Match the following molecules based on their bond angles: 1. O-S-O bond is so,2 2. O-N-O…

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Q: 160.95 205.0 O(g) 02(g) FeO(s) Fe203(s) FegO4(s) Fe(OH)2(s) 60.8 90.0 145.2 79.5 che answer should…

A: As we know, for a chemical reaction,  □Srxn = [Total entropy of products] - [Total entropy of…

Q: 2) Given the thermodynamic data of ethanol below, calculate the change in entropy of 55.5 g of solid…

A: GIVEN:-

Q: 1. A. CHC13 В. Н.СО C. NH2CI Lewis Structure (show all electrons and bonds) e geometry Approx. Bond…

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Q: How many moles of an ideal gas occupy 12.5L at 298K and 1.00atm (1.01bar) pressure?

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Q: arrows are used to illustrate the flow of electrons. Follow the arrows to predict the product of…

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Q: What is the empirical formula of a compound of carbon, hydrogen, and Oxygen that contains 51.56% and…

A: Given:: %C = 51.56%  %H = 14.09 % then, empirical formula = ?

Q: Which of the following best describes the Ksp expression for Pb(OH)2? OAP62 (2 x [OH]) OB [Pp2*j (2…

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Q: Which of the following statements is TRUE? OA. Endothermic processes decrease the entropy of the…

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Q: m-CPBA is not the only peroxyacid capable of epoxide formation. For each reaction below, predict the…

A: In question it is given to write the product and mechanism of the given two epoxidation reactions.

Q: Consider the data for an unknown compound with the molecular formula C,H002- • IR: 2400-3200 cm-,…

A: Molecular formula – C9H10O3

Q: etimes used to infla grams of CaH2 are

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Q: The energy required to break the H- CI bond to give H* and CI would not be called the H-CI bond…

A: Bond energy is amount of energy needed to break atoms involved in molecular bond into free atoms.

Q: What is the cobalt(II) ion concentration in a solution prepared by mixing 357 mL357 mL of 0.396…

A: Answer: This question is based on the application of limiting reagent. Limiting reagent is the…

Q: Predict the major product of the following reaction. Br: EINH O cis O syn O trans O anti

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Q: n acid or base in

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Q: A salt made up of a cation with a +3 charge and the chloride ion. In a saturated solution of the…

A: Given:: Cation (Let A)= +3 charge [Anion] = [Cl-] = 0.0787 M Ksp= ?

Q: (Q20) In the hydrosulfuric acid solution described in Q19, what is the equilibrium concentration of…

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Q: Draw the product of the reaction shown below. HO РСС CH2CI2 FF nny

A: Reaction of alcohol with PCC is the oxidation of alcohol.

Q: E. BRCN (C in center) 2. A. CO2 B. NO: C. NH;CI D. SO, Best Lewis Structure (show all electrons and…

A: We have find out Best Lewis Structure  e geometry Approx. Bond angles Polar or non-polar  Total lone…

Q: For the redox reaction given below complete the following: 4AI (s) + 302(g) → 2AI2O3 (s) (a) What is…

A: The addition of electrons or decreases in the oxidation state is known as a reduction reaction and…

Q: Question 21 If 17.6 mL of 0.195 M HCIO4 are added to 7.36 mL of 0.0369 M CSOH, what is the final pH?…

A: Calculate moles of acid and base, then, calculate remaining moles of acid. Add the volume of acid…

Q: Ksp for Pbl2 is 8.43E-6. What is the solubility of Pbl2 in g L-1? (molar mass: 461.01 g mol-1) (the…

A: Given, Solubility product constant (Ksp) for PbI2 = 8.43 × 10-6  Solubility of PbI2 = ? g/L Molar…

Q: match the molecule with respective intermolecular forces - v CH4 A. Hydrogen bonding v H20 B. London…

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Q: 4.) The dissociation energy of a carbon-bromine bond is typically about 276 KJ/mol. What is the…

A: Given, the bond dissociation energy of a carbon-bromine bond = 276 kJmol We have to find the maximum…

Q: Calculate the Zeff and S for 2s and 2p (where appropriate) for both B and Be.

A: Zeff of B Zeff= Z-sigma factor Zeff=5-2.40=2.60

Q: The mechanism for photodimerization of B is shown below: B+ hv – B* k1 B* +B- B2 k2 B* B+ hv' k3…

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Q: Question 19 The solubility product constant for MX2 is 7.48E-3. What is the molar solubility of MX2?…

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Q: Mg + O2 ------> MgO Na2CO3 -------> Na2O + CO2 C3H8 + O2 -------> CO2 + H20

A: As per our company guidelines we are supposed to answer only first 3 sub-parts. Kindly repost other…

Q: From the list of acid-base indicators below, select the one BEST indicator for a titration with an…

A: The indicators are chemical compounds that show changes in color at a definite change in pH. Hence,…

Q: Many operations in the chemical laboratory use “salting out” in the procedure. What do the purpose…

A: We have find out the purpose of salting out technique in the chemical laboratory.

Q: I. Give the Lewis dot structure of the following: a. NazSO3 b. Dinitrogen tetroxide II. Predict the…

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Q: Consider the following data on some weak acids and weak bases: acid base Bo K, name formula name…

A: The given compounds are salts. So to check their pH , we would determine how these salts are made.…

Q: Provide structurets) for the starting material(s), reagent(s) or the major organic productis) of…

A: ->Alcohol reacts with acetic acid and form ester.

Q: If the solubility of a drug is 3.8g/L and in chloroform 226g/L calculate its partition coefficient…

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Q: F. H3C, (а) Br and `F Br "CH3 CH3 H3C H H. (b) F and Br Br CH Br CH3 Br- H. (с) and H3C" F CH3 H. F…

A: -> If configuration are just reversed then they are enantiomer. ->If configuration are same…

Q: Question 3 For each compound on the left, which compound on the right can be combined with it to…

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Q: a. Ru-106 decays by beta decay. What are the atomic symbol and mass number of the product? Product:…

A: Answer of the question given below,

Q: stion 8 A salt made up of a cation with a +3 charge and the chloride ion. In a saturated solution of…

A: Given:: [Cl-] =0.0787 M cation = +3 charge Ksp =?

Q: A carboxylic acid (ka=1.8*10-5) was extracted from an aqueous solution ir the presence of ether, and…

A: Distribution ratio is the ratio of total solute concentration in organic phase to total solute…

Q: Calculate the induced dipole moment of SO2 due to a K+ ion that is 5.2 Å away from the center of the…

A: Given as Distance from SO2 = 5.2 A0  Polarizability of SO2=3.72×10-30 m3 The induced dipole moment…

Q: yas Ul uikHoWh mólécular mass was allowed to effuse through a small opening under constant pressure…

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Q: A buffer solution is made that is 0.427 M in HNO2 and 0.427 M in KNO2. If K for HNO, is 4.50 x 10,…

A: Given-> Concentration of HNO2 = 0.427 M Concentration of KNO2= 0.427 M Ka(HNO2) = 4.50 × 10-4…

Q: What is the balanced equation for each of the following processes? 1)Cu produces a positron. Sb…

A: The radioactive decay of the atoms produces electron, positron, alpha and beta particles.

Q: What must be true about the change in total potential energy of a collection of atoms for a stable…

A: The process in which the potential energy of the system decreases will stabilize the process.

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.