A Geiger counter is set to click once for every 100 disinte- grations that it detects. The counter registers 20 clicks per second for a sample of an unknown isotope. What is the activity of the sample in Ci? In µCi?

Q: Which colligative property of solutions listed below is correctly stated? 1. The freezing point of a…

A: we need to identify the true statements based on colligative properties of solutions

Q: The free energy change for the following reaction at 25 °C, when [Cd2+] = 1.13 M and [Cr³+] =…

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Q: What is the molar solubility of Ag2SO4 in the presence of 2.52 M aqueous solution of AgNO3?…

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Q: given chemical reaction, the value of AH is negative and the value of AS is negative. The value of…

A: Given, the value of ∆H is negative and  ∆S is negative.

Q: 2 HC162) + Mg (S), Molealar equation Total jonic equation Net jonic equation

A:

Q: A 0.22 M solution of a weak monoprotic acid, HA, has a pH of 3.28. Calculate Ka for the acid. 8.9 x…

A: Given, concentration of weak monoprotic acid, HA = 0.22 M pH = 3.28

Q: Give a specific example of halohydrin formation of alkenes including the starting material…

A: In this question, we have to Give a specific example of halohydrin formation of alkenes including…

Q: What is the equilibrium constant K at 25°C for an electrochemical cell when E° = +0.0360 V and n =…

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Q: A 93.6 g sample of ground water is found to have a lead concentration of 15.65 ppm. Calculate the…

A: Given : Mass of sample = 93.6 g Concentration of lead = 15.65ppm

Q: is the oxidation number of the nitrogen in NO3 ? O +4 O +3 O +5 O +6 O +7

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Q: Draw the structure of the starting material in this hydration experiment.

A: This experiment is synthesis of hexan-1-ol by hydration of hex-1-ene.

Q: Complete the ff nuclear equations. Write the mass number, atomic number, and symbol for the…

A: Nuclear reaction: The given reaction is a nuclear reaction. In the nuclear reaction, one nuclide is…

Q: A chemist prepares a solution of potassium dichromate (K₂Cr₂O7) by measuring out 43.6 µmol of…

A: Given :-  No.of moles of K2Cr2O7 = 43.6 umol  Volume of solution = 300. mL  To calculate :…

Q: The activation energy of a reaction can be determined from the slope of which of the following…

A: Since you have posted multiple questions as per guidelines we can answer first one and it you want…

Q: Which of the products listed below is formed as an organic product of the following reaction? be…

A: In this question we have to tell the organic product of the reaction.

Q: 3) A vegetable weight is 23.5631 g was found to have 0.0762 g acid-insoluble ash. What is the…

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Q: This question has several parts that must be sequentiam the values in listed below instead of the…

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Q: An arteriole has a diameter of 2.5x10-5 m and blood flow rate of 2.7x10-3 m-s-1. Calculate the…

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Q: A 12-ml. sample of borax solution was titrated with 0.482-M HCL. The endpoint was reached after…

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Q: The mechanism for NO2 (g) + CO (g) → NO (g) + CO2 (g) is thought to be: 2 NO2 → NO3 + NO (slow)…

A: Rate of a reaction is given by slowest step of a reaction and hence it's rate can be given be rate…

Q: If the volume of a gas doubles while the temperature decreases to a quarter of its original value,…

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Q: Question 25 From the change in internal energy, AE, given for 40 °C, calculate the change in…

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Q: The half life of the radioactive element ubtonium-31 is 10 seconds. If 80 grams of unobtanium-31 are…

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Q: he dominant type of IMF for CF4 is LDF Ion-Ion forces Hydrogen Bonding Dipole-dipole forces   The…

A: Since you have posted question with multiple subparts as per guidelines we can answer only three per…

Q: The volume c

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Q: 4. Which one of the following characteristics is associated with adsorption? (a) AG and AH are…

A: correct option would be (d)

Q: - Which one of the following statements is not correct? (a) The value of equilibrium constant is…

A: 1. (a): Calatyst does not change the value of equi librium constant as they affect forward as well…

Q: In this experiment we consider the hydrolysis of dilute acetic anhydride in water where we will…

A: A functional group is an atom or group of atoms other than the hydrocarbon chain that is responsible…

Q: 10.0 g of NaHCO3 is dissolved in a mixture of 1750 mL water and 250 mL of 0.20 M NaOH. a. Calculate…

A: pH of solution can be calculated using Henderson hasselbalch equation.

Q: In one lab, the gas-collecting apparatus used a gas bulb with a volume of 231 mL. How many grams of…

A: Given: Volume of CO2 produced = 231 mL = 0.231 L                                           (Since 1…

Q: Question 14 The hydrolysis of phosphoenolpyruvate proceeds with a AG" of about -62 kJ/mol. A major…

A: When the phosphoenol pyruvate undergo hydrolysis reaction, then inorganic phosphate group is…

Q: You need to prepare 1L of 100 mM phosphate buffer at pH 7.1. What masses of monosodium phosphate…

A: Given: Total concentration of solute in buffer = 100 mM = 0.100 M Volume of buffer = 1 L And pH of…

Q: se Titration Curve 14 12 10- DH 8- 6 2 0 8 12 Titrant Volume (mL) 16 20

A: ★ Answer : Correct option is 5.00 mL ★ solution :

Q: A gas of unknown identity effuses at a rate of 83.3 mL/s in an effusion apparatus in which carbon…

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Q: Which of the following pairs of reactants will react to produce gas, and what gas(es) will form! a.…

A: a) The reactants given are Zn and H2SO4.

Q: Decide whether a chemical reaction happens in either of the following situations. If a reaction does…

A: Given:

Q: Example 8. The laboratory reagent, concentrated nitric acid, is generally 69 per cent by mass of…

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Q: Calculate the molar solubility in pure water of the hypothetical compound, XY3 that has Ksp value of…

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Q: When mixed in equal molar amounts, which of the following pairs of substances would create a buffer?…

A: Buffer solution is a mixture of weak acid or base with it's conjugate acid or base. Weak acid and…

Q: At a temperature of 300 K, by what factor (multiple*) does the rate constant for a reaction increase…

A: Given: The activation energy initially = 99 KJ/mol. And the final activation energy = 98% of initial…

Q: Predict the product(s) formed when tripalmitolein is treated with each of the following reagents:…

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Q: What is the mass of the solute in 750mL of 0.311M potassium bromide? Group of answer choices 27.8g…

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Q: In a galvanic cell, oxidation takes place at the: cathode, anode, or any electrode (choose 1),…

A: There are basically two types of electrochemical cell-  1- galvanic cell 2- electrolytic cell

Q: The activation energy of a reaction can be determined from the slope of which of the following…

A: Since you have posted multiple questions as per guidelines we can answer only one per session. If…

Q: Calculate the standard change in Gibbs free energy for the reaction at 25 °C. Standard Gibbs free…

A:

Q: Hydrolysis of acetic anhydride will occur at what bond? OC-O O C=O ( с-с O C-H

A: Note : acetic anhydride hydrolysis produces acetic acid. This acyl substitution reaction. Here C-O…

Q: Identify 2 things that could happen during an experiment to cause tthe actual yeild to be lower than…

A: Theoretical yield is the maximum amount of product which can be formed in a reaction.  Actual yield…

Q: Using the values you got from the textbook for enthalpy and entropy, calculate AGO (kJ mol-¹) at…

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Q: For the following molecule, identify the position which is the most likely to undergo EAS reaction:…

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Q: Determine the theoretical yield of HCl if 60.0 g of BCl3 and 37.5 g of H₂O are reacted according to…

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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.