Determine the time required for a sample of cesium-137 to decay until only 1/8 of the original sample remains unchanged. a 30.2 y 60.4 y 90.6 y 120.8 y 9:26 PM 52°F Cloudy 5/18/2022 pe here to search F2 F3 F4 F5 F6 F8 F9 F10 F11 F12 Home End Delete Backspa %24 3. 4. 6 7 8. 69 D F G H 近

Q: 3. Compound X has the formula C46H9004. Compound X reacts with excess H2/Pd to give C46H92O4. How…

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Q: What is the percent ionization of 7.5x10-2 M HCN? Ka = 4.0 x 10-10 for HCN.

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Q: Which of the follwoing compounds is an arene?

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Q: Equilibrium Expression Calculations Assignment 2 1. The reaction H2e) + I«e) 0.00034. If the initial…

A:

Q: 31. After drawing the mechanism of the below reaction, what is the substitution product of the…

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Q: What is the wavelength of the radiation in picometers, pm? X = 8.57 x 10-13 m %3D

A: We are given  wavelength of radiation ,   (λ) = 8.57 × 10-13  m

Q: Which of the below statements BEST describes the purpose for using moles in chemistry? They help to…

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Q: The density of gold is 19.3 g/cm^3.  What is the density of gold in lb/in^3?  (1lb = 454 g , 1 in =…

A: Given, Density of gold = 19.3 g/cm3 Density of gold = ? Ib/in3 1lb = 454 g 1 in = 2.54 cm

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Q: 10% PdCl,(PPh,)2 C,H,Br + CeH,O2 20% PPh, OEt D. E NEt, Figure 4 (ii) Name the reaction occurring in…

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Q: Is there a buffer system for question 2.

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Q: Br

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Q: Which of the following fragment is isolobal with [PtCl,] ? Answer Choices: (A) PtCl, (B) Cr(CO); (C)…

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A: See explanation

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Q: 3.50 moles of an ideal gas is expanded from 450 K and an initial pressure of 5.00 bar to a final…

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Q: Equilibrium Expression Calculations Assignment 2 1. The reaction H) + Ie) « 2HIe) goes to…

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Q: .CN OTs

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Q: Adding or removing a grain of sand constitutes .A Infinitesimal change .B little change .c No change

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Q: Naturally occurring element X exists in three isotopic forms: X-28 (27.977 amu, 32.21% abundance),…

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Q: Chemistry 3) How many grams of solid potassium fluoride should be added to 1.50 L of a 8.35x10-2 M…

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Q: molecular formula of this compund?

A: Molecular formula of this compund?

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Q: Br Br Br II II IV

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Q: What is the molar mass of the substance with the formula FeC2O4?

A: Molar mass can be calculated as follows

Photochemistry

Photochemistry is the part of chemistry that studies the various mechanisms of reactions that are triggered by the presence of light energy. It also helps to study the changes involved in a molecule that can undergo the absorption of radiation.