A medical technician is working with the four samples of radionuclides listed in the table below. Initially, each sample contains 23.00 µmol of the radionuclide. First, order the samples by decreasing initial radioactivity. Then calculate how long it will take for the amount of radionuclide in each sample to decrease to 1/16 of the initial amount.

Q: What is the voltage associated with the 2-electron reduction of Cu2+ to Cu at the cathode and the…

A: This question is related to electrochemistry. Electrochemical series describes the arrangement of…

Q: What is the mass of 1.98 mol of PH 3?

A: Given,  Mol of PH3 = 1.98 mol  We have to calculate the mass of PH3

Q: Q1/ A gas has the following composition measure at 2500 psia and 310 °F calculate: 1. The…

A: Given: The volume percents at at 2500 psia and 310 °F conditions are:                        methane…

Q: 3) 3-Methylbutyramide 100 CHINO 101 R28888 CH₂N relative intensity relative abundance 4)…

A:

Q: (SHOW CALCULATIONS) Aluminum oxide forms when aluminum reacts with oxygen by the following balanced…

A: Given, 4 Al(s) + 3 O2(g) ➝ 2 Al2O3(s) Observed yield of Al2O3 = 87.3 g mass of Al reacts = 55.0 g…

Q: A lithium atom consists of 3 protons, 4 neutrons, and 3 electrons. This atom contains a total of…

A:

Q: A. Picric acid (2,4,6-trinitrophenol) is slightly soluble in water but is readily soluble (with…

A: Strong acids soluble in weak base like NaHCO3 Electron withdrawing groups enhance the acidic nature…

Q: multidentate ligands impreferable for complexometric titrations (А тоже. false doe B

A: multidentate ligand are preferable for complexometric titration

Q: Determine the amount in grams of KCI that exists in 20. g of a solution that contains 1.14 % KCl by…

A: A solution is made up solute and solvent. Solute is present in small amount and solvent is present…

Q: What is the concentration of H₂O(g) after a mixture that contains 1.5 M of H₂O(g) and 1.5 M Cl₂O(g)…

A:

Q: A saturated solution of a metal hydroxide with the chemical formula X(OH)2 was filtered and 25.00 mL…

A: Given :  Volume of saturated solution of X(OH)2 = 25.00 ml  Concentration of HCl solution = 0.0050 M…

Q: Consider the following reaction, 6NO(g) + 4NH3(g) --><-- 5N2(g) + 6H2O(g) initially there are 6.0…

A: Concentration of NO(g) at equilibrium = 3.0 M

Q: A sample of seawater contains 1.9 g of calcium ions in 5364 kg of solution. What is the calcium ion…

A: Given  Mass of solute (calcium ions) = 1.9 g Mass of solution = 5364 kg = 5346×103 g Concentration…

Q: Choices 0.20 mol/L H₂SO3(aq) 0.10 mol/L H₂SO4 0.20 mol/L H₂SO3(aq) Stronger Acid 0.10 mol/L H₂SO4

A: The acid which have higher H+ ions in given amount of water will have more stronger acid as compare…

Q: write the molecular equation, complete ionic equation and net equation for each reaction.

A:

Q: 3.02 g of sodium sulfate was mixed into a solution containing 48.5 mL of 0.185 mol/L aqueous silver…

A: Given: 3.02 g of sodium sulfate was mixed into a solution containing 48.5 mL of 0.185 mol/L aqueous…

Q: Fill in the information missing from this table. nuclide protons neutrons Z A 1 22 27 0 0 0 5 11 0 0…

A: Atomic number = Z Mass number = A Atomic number = number of protons Mass number = (number of protons…

Q: Results from a conductivity test B If each of the following substances were tested with a…

A: Solution: In both the condition , the current is flowing but in Case A the intensity is more than in…

Q: Gaseous ethane (CH₂CH3) reacts with gaseous oxygen gas (0₂) to produce gaseous carbon dioxide (CO₂)…

A: Given  Mass of ethane = 6.9 g Mass of O2 = 6.4 g Actual  yield of water = 1.20 g Percent yield  of…

Q: Consider the reaction, CuSO4(s) --><-- CuO(s) + SO3(g) if deltaGrxn = -14.6 kJ•mol^-1 at 950…

A:

Q: article Arsenic is a global metal.

A: Arsenic is a naturally occurring metalloid and one of the few metals that can be metabolized inside…

Q: 4.00 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have…

A: Given that, 4.0 g of a compound X is made of carbon, hydrogen and perhaps oxygen. The molecular…

Q: 9) Which of the following is a tertiary alcohol? a. CH₂-CH-OH b. CH₂ CH₂-CH-OH C. d. CH₂ CH₂-C-OH…

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Q: The following chemical reaction takes place in aqueous solution: Fe(NO3)₂(aq) + (NH4), S (aq) → FeS…

A:

Q: Carbon dioxide (CO2) will react with an oxide ion (O2-) to form CO32- CO2 + O2- --> CO3^2- whixh…

A: The species which can accept a pair of electrons is known as Lewis acid.  The species which can…

Q: Q120) Which of the following i O All of these are forms of ionizing O X-rays O Gamma rays O…

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Q: pH = 7,36 PCO₂=36 mmol/l 2 SB= 19,5 mmol/l BB=39 mmol / BE=-5 mmol/l

A: The concept is in respect to Arterial blood.

Q: find [H3O+] in M ph=2.00

A: Given,  The pH of the solution is 2.00 The [H3O+] is:

Q: What is meant by the term structure of material?

A:

Q: On the sketch indicate a. the signs of the electrodes Mg(s) + 2Ag+ (aq) → Mg+2 (aq) + 2Ag(s)

A: Recall the given redox reaction,                           Mg s  +  2 Ag+ aq  →  Mg+2 aq  +  2 Ag…

Q: Octane is a primary constituent of gasoline, burn in air according to the following reaction: C8H18…

A:

Q: sodium chromate combined with copper sulfate Draw a particle diagram for the reactants and…

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Q: 49.410% potassium, sulfur, and 30.32% oxygen are found to be in a sample found in an unlabeled…

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Q: Outline a brief procedure for making a diluted solution from a concentrated stock solution. Be…

A: A stock or standard solution is a solution in which its concentration is known accurately. We can…

Q: A proposed mechanism for the reduction of nitrogen as NO by hydrogen is: $$ (1) (2) H₂(g) + 2NO(g) →…

A:

Q: What is a buffer? A) A buffer is the same thing as an acid. B) A buffer is the same thing as a base.…

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Q: 20) Which molecule is a primary amide? A) CH,CH2NH(CH3)2 B) CH3NHCOCH3 C) C6H5CONH2 D) CH3NHCH₂CH3

A: Dear student , since you have posted multiple questions we will allow to solve only first question…

Q: What is the voltage associated with the 2-electron reduction of Cu2+ to Cu at the cathode and the…

A:

Q: Describe the relationship of conductivity (not molar conductivity) with the concentration of a. weak…

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Q: A tritium nucleus is formed by combining two neutrons and a proton. The mass of this nucleus is…

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Q: 300.0 mL of a 0.440 M solution of Nal is diluted to 700.0 mL. What is the new concentration of the…

A:

Q: What is the concentration of H₂O(g) after a mixture that contains 1.5 M of H₂O(g) and 1.5 M CL₂O(g)…

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Q: 1. From the values of AH and AS, predict which of the following reactions would be spontaneous at…

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Q: N

A: Under acidic condition ring opening of epoxide occurs from the more hindered site.

Q: (28) An archaeologist claims that a bone in her collection is from a saber-toothed tiger that is…

A: we have to calculate decay rate of bone

Q: It is observed that 8.7x10^-4 mol of SrF2 will dissolve in 1.0 L of water. Use this data to…

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Q: ----) A vessel has content 0.2 of C₂H6 & 0.6 Oxygen as at 2000K, find the time to consumption all…

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Q: For each reaction below, write the conventional, ionic, and net ionic equation.  Include designation…

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Q: On the sketch indicate Mg(s) + 2Ag* (aq) → Mg+2 (aq) + 2Ag(s) c. the direction in which the…

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Q: *23-23 The following cell was found to have a potential of -0.492 V: Ag|AgCl(sat'd)||HA(0.200…

A: Here we have to determine the acid dissociation constant of weak acid HA from the following given…

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.