A chemist wishing to do an experiment requiring "a (half-life = 4.5 days) needs 3.0 ug of the nuclide. What mass of "Caco, must be 47 ordered if it takes 24 h for delivery from the supplier? Assume that the atomic mass of "Ca is 47.0 u. Са Mass %D

Q: Complete the following nuclear bombardment equation by filling in the nuclear symbol for the missing…

A: In any nuclear reaction, the conservation of mass and energy always follows the reaction. Hence, the…

Q: How do we prepare Propionitrile in the lab

A: GIVEN:- How do we prepare Propionitrile in the lab ?  Propionitrile is   CH3CH2CN

Q: Can you predict an undesirable side reaction that might occur using ethanol as a solvent that would…

A: This question is an example of SN2 reactions.  It tend to work via a polar / ionic mechanism which…

Q: mass of solute

A:

Q: Weak base/nucleophile can lead to E1 or SN1 products. CH2 CH, OCH,CH, CH3 CH, Br heat + + CH;CH2OH…

A: Answer: Given reactions are the characteristic reaction of alkyl halides where they form the…

Q: Calculate the pH at the equivalence point for the titration of 3.644 M B: (a weak base with pKb =…

A: Molarity of Weak base (B) = 3.644 M Molarity of HCl = 3.644 M pKb(B) = 6.08

Q: For the reaction C(s) + H20 (g) – CO(g) + H2 (g) AH° = 131.3 kJ/mol and AS° = 133.6 J/mol-Kat 298 K.…

A:

Q: Papaverine hydrochloride (abbreviated papH" Cl¯; molar mass 378.85 g/mol) is a drug that belongs to…

A: papH+ Cl- has a mass of 32.0 mg/mL . Kb of abbreviated pap is 8.33 * 10-9 at 35 ◦ C and Kw is 2.1 *…

Q: Calculate the binding energy per nucleon for the 26 Fe nucleus. (Atomic masses: iron-56 = 55.9349…

A: Given, Mass of Fe-56 = 55.8349 amu  Mass of proton = 1.0078 amu  Mass of neutron = 1.0087 amu  Mass…

Q: PROCESS/PROCEDURE: Answer the questions below in relation to the following generic phase diagram.…

A: A question based on phase diagram that is to be accomplished.

Q: Select the isotope deuterium, 2H. What is the relative mass loss of deuterium, 2H, in g/mol?

A:

Q: Calculate the percent dissociation of 4-chlorobutanoic acid in a 0.79 mM aqueous solution of the…

A:

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: I need specific description of the compounds involved in the synthesis (functional groups, specific…

A: We have to explain each step of the given synthesis reaction.

Q: What mass of NaOH(s) must be added to 1.0 L of 0.045 M NH3 to ensure that the percent ionization of…

A: The reaction happening is as follow:                           NH3 + H2O ----> NH4OH…

Q: A weak monoprotic acid, HA dissociates by 2.416 % and has a pH of 3.61. Calculate the Ka value for…

A: percent dissociation of HA is 2.416% pH = 3.61

Q: Butane, C4H10, is a component of natural gas that is used as fuel for cigarette lighters. The…

A: The ideal gas equation is  PV = nRT  P = pressure  V = volume  n = moles of gas = mass/molar mass R…

Q: a) What is the wavelength in nanometres of light emitted by the helium ion (He2+) when it captures…

A: The wave length of light is

Q: O Use the following radial probability function to justify i. why the B than has a first lower…

A: B has first ionisation energy greather than Be because in the valence cell of boron has 2p1 ,it…

Q: name of the binary molecular compound

A:

Q: 9.51 g mixture of metal hydrate BaCl2*2H2O with an unknown amount of KCI is heated to remove water…

A: A question based concentration terms that is to be accomplished.

Q: A mixture of gases contains 1.56 g of N2, 1.35 g of H2, and 3.61 g of NH3. If the total pressure of…

A: Using dalton's law of partial pressure. Total pressure = sum of partial pressures of all gases.

Q: 1. Define oxidation numberm oxidation, reduction, reducing agent and oxidizing agent. 2. What is…

A: Define Oxidation number A number is to assign an element or atom in a chemical compound that…

Q: What is the name of the ionic compound (NH4)2SO3? Enter the name in all lowercase letters (including…

A:

Q: Give at least two (2 ) chemical processes happening around you that you think happens too fast and…

A: GIVEN:-

Q: Carboxylic acids can be made by the hydrolysis of nitriles, which in turn can be made from an alkyl…

A: Alkyl bromides are a good substrate for nucleophilic substitution reactions. If an alkyl bromide…

Q: 35 mol of zinc react with silver nitrate, how many moles of silver will form?

A: Moles Of Zn = 35 mole

Q: How many sites of diversity are there in this combinatorial library? NN N. HN `NH2 он `NH2 6 4 8. 3

A: To check the site of diversity we would check the positions in given compounds where atoms of groups…

Q: A 4.10 g sample of an unknown compound containing only C , H , and O combusts in an oxygen‑rich…

A: Mass of the compound = 4.10 g Mass of water = volume * density = 3.36 mL * 0.998 g/mL = 3.35328 g…

Q: 59 100- 80- M(102) 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 m/z Relative Abundance

A: Mass spectra helps us to analyse different possible fragments in a given organic compound by various…

Q: The combustion of ethene in the presence of excess oxygen yields carbon dioxide and water: C2H4 (g)…

A: For the reaction, delta So can be calculated using standard entropy value

Q: The mass percentage of oxygen in 5.5 g M9SO.7H;0 equals : a. 57.7% 71.5% c. 63.5% d. 55.8%

A: Mass percent :- The mass (in grams) of an element present in 100 grams of the compound is defined as…

Q: How many oxygen atoms are in the formula Al 2(CO 3) 3?     1     6     3     9     none of the…

A: The number of oxygen atom in Al2(CO3)3 is given below

Q: Potassium dichromate is often used to standardize reducing agents like Fe2** Cr207 + 6Fe2+ + 14 H* →…

A: it is an example of redox titration where potassium dichromate is standardized using reducing agents…

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: Directions: Determine the mole ratio of the following reactants and products. For items 1 and 2:…

A: Mole ratio is the ratio of coefficients which is present in the reaction. Check the coefficient in…

Q: CH3 CH3 + OCH3 a. + CI OCH3 HO + I b. он CI + "OCH2CH3 OCH,CH3 + CI C. d. Br CN .CN + Br +

A: In SN2 mechanism transition state is formed...

Q: Which of the following is the balanced half -reaction for the oxidation of Cu to Cu+2? Select one:…

A: Oxidation :-  The process of loss of electrons or increase in oxidation number is known as oxidation…

Q: An oxidation-reduction reaction must involve reaction with oxygen.  True  False

A:

Q: What are the pH and pOH of a solution of 2.0 M HI, which ionizes completely?

A:

Q: Draw the chemical structure of the following amino acid sequence at pH 7, label the peptide bonds,…

A:

Q: How much CO2 can be derived from 500 g of lactose?

A: Given-> Weight of lactose = 500 gm

Q: What is the pOH of a 0.18M benzoic acid (C6H5COOH) at 25°C?  Ka = 6.3×10^-5

A:

Q: In PCIS, the Patom violates the octet rule by sharing 5 electrons. This is because the valence she…

A:

Q: . Are the following compounds likely to dissociate, partially dissociate, or not dissociate when…

A: Given :- a) NaNO3(s)  b)sucrose , C12H22O11(s)  c) formic acid, HCOOH(l)  To classify :-  Strong…

Q: Find the standard cell potential for an electrochemical cell with the following cell reaction. Hg2+…

A:

Q: 6. Chemical analysis of an unknown compound shows that it contains 64.9% C, 13.5% H, and 21.6% O by…

A: Please find your solution below : Empirical formula of a compound is defined as the simplest whole…

Q: Draw a mechanism to show how the following molecule forms a racemate when exposed to base. Think…

A: We have to give the mechanism of the given racemate reaction. Now, we know that sodium ethoxide…

Q: A certain radioactive nuclide has a half life of 7.00 hour(s). Calculate the rate constant for this…

A:

Q: MnO2 + 4HCI -→ MnCl2 + 2H2O + Ch For items 7 to 9: 7. What is the mole ratio of MnO2 to H2O? 8. What…

A: Mol to mol ratio in a reaction is the coefficient present before the compound in the reaction. Check…

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.