Iodine-131 is radioactive and has a half life of 8.04 days. Calculate the activity of a s.8 mg sample of iodine-131. Give your answer in becquerels and in curies. Round your answer to 2 significant digits.

Q: %. The percent by mass of oxygen in C3 H6 O3 is (Enter your answer to four significant figures.)…

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Q: The following reaction was analyzed and data was collected. 3A (g) + 2 B4 (g) + C2 (g) – D (g)…

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Q: La

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Q: #) A compaund noith Moteailor foomela C7 HgO exlibit myZ 108, 93, 18,7I, 65, 51. Deduce the most…

A: The answer is based upon Mass Spectrometry.

Q: 16.50 ml. a HBt soluton of unknown concentration requires 16.49 ml. of a 0.100 M KOH solution to…

A: One mole of HBr react one mole of KOH

Q: Convert 2.70 atm to torr

A: In this question we have to change the unit of the pressure. 1 atm = 760 torr

Q: A cvg.cengagenow.com [References] Use the References to access important values if ne A compound is…

A: Given :-  Percent composition of S = 21.95%  Percent composition of F = 78.03%  Molar mass = 146.1…

Q: How much energy (in kJ) is required to heat 100.0 g H2O from a liquid at 76°C to a gas at 132°C?

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

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Q: A0 682 mol sample of liquid propanol (60.09 g/mol) is heated from 25.6°C to 322.7°C. The boiling…

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Q: НО O: H2N Write each of the two different dipeptides that form from the condensation reaction…

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Q: A sealed glass container contains 1.56 moles of He gas and 2.63 moles of Ar gas. If the total…

A: partial pressure of Helium = ?

Q: 1. How many ATOMS of nitrogen are present in 8.94 grams of nitrogen monoxide ? atoms of nitrogen. 2.…

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Q: Predict the major product of the following reaction. H3O* OH OH ОН OH `CH3 `CH3 CH3 + enantiomer…

A: Protonation of akene  Attack of water as nucleophile  Deprotonation

Q: Add missing reagent(s) while also showing stereochemistry of the product of the second reaction.

A: In this question we have to complete the given organic reaction.

Q: ii. HN NH2 high dilution condensation LIAIH CIOC -COC

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Q: help asap!! I need these 3 questions answered so I can pass this class!! thank you

A: Name substituted arenes -  This compound contains an aromatic Carboxylic acid, benzoic acid, with…

Q: Phosphorus pentachloride decomposes according to the chemical equation PCI,(g) = PCl, (g) + Cl,(g)…

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Q: He acia (H,SO,) reacts with solid sodium hydroxide (NaOH) to produce aqueous sodium sulfate (Na,…

A: One mole of sulphuric acid react two mole of sodium hydroxide and produced two mole water

Q: 60 F 50 40 kcal/mol 30 20 10 course of rx www This is an endothermic reaction OA. True B. False

A: We have to predict whether given Statement is correct or not.

Q: Use this data to answer the following questions. Write the rate law for this reaction. rate = k O ロロ…

A: The rate law can be found in two ways-  1- graphical method 2- taking the concentration at different…

Q: In an experiment that uses TLC, like the one performed in this course, which of the following…

A: Thin layer chromatography (TLC) is used to isolate and separate non-volatile mixtures based on their…

Q: Calculate the volume of disodium phosphate (in mL) required to prepare 90.0 mL of a buffer with a…

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Q: What is the final product formed in the following sequence of reactions? (Hint A Michael…

A: The answer is as follows:

Q: A central atom has two atoms bonded to it and has two lone pairs of electrons. What is the molecular…

A: Given : A central atom has two atoms bonded to it and has two lone pairs of electrons  To determine…

Q: CN

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Q: The molar enthalpy of combustion for propane is -2220 kJ. C, Hg(g) + 50,(g)+3CO2(g) + 4H20(g)…

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Q: Calculate the pką of an acid with Ka = 7.77 x 104. %3D A. 3.110 B. 7.160 C. 10.089

A: pKa = 3.110  ----> option(A)

Q: What type of compound is most consistent with the IR spectrum shown below? 3000 1500 1000 4000 O…

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Q: When 1-butene reacts with HBr the reaction mechanism proceeds through a? secondary carbocation…

A: Reaction of 1-butene with HBr is an addition reaction. The HBr add to double bond as per…

Q: A solution contains 3.00 g of solute in 13.6 g of solvent. What is the mass percent of the solute in…

A: Total mass of solution is equal to sum of mass of solvent and solute

Q: An acid has a Ka = 7.77 x 10-4. Is it stronger or weaker than an acid with Ka = 7.77 x 10-3 ? A.…

A: We have to compare the acid strength.

Q: kinetics

A: According to the question,  Rate constant= 9.20*10^-10 cm^3 molecule^-1 s^-1

Q: 3. Fill in the following chart. Sample Type of Matter (Element, Compound, Mixture) Compound Efement…

A: The samples given are  Ocean water, Glucose (C6H12O6), Apple juice, Oxygen (O2), Blood, Water (H2O),…

Q: -0.0146KJ /g 432-50.0--6.8.× 50.0g x4.18579°C-F1420J C. How much energy is lost by the water when it…

A: Your answers for options-(a), (b), and (c) are right.

Q: Cesium-137 is radioactive and has a half life of 30. years. Calculate the activity of a 5.0 mg…

A: Here we are required to find the activity of 5mg of radioactive sample of Cs-137.

Q: A 5.00 L tank at 1.0 °C is filled with 6.54 g of sulfur hexafluoride gas and 15.5 g of boron…

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Q: A gast at 139.1°C and 0.72atm is compressed until the volume decreases from 581.6ml to 96.7ml and…

A: Given :-  P1 = 0.72 atm  V1 = 581.6 mL  T1 = 139.1°C  P2 = 11.6 atm  V2 = 96.7 mL  To calculate :…

Q: A gaseous element has a density of 8.098 g /L when the temperature is 35.14 "C and the pressure is…

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Q: C三e

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Q: 10 A31.0 ml. sample of 0.245 M formic acid (HCHO2) is titrated with 0.245 M NAOH. Calculate the pH…

A: First we would determine equivalance point using equation :  Ma Va = Mb Vb  If reaction is as…

Q: Which reactions have a positive ASxn? A(s)+B(s) C(g) O 2 A(g) + 2 B(g) 5 C(g) 5 C(g) O 2 A(g)+B(g) →…

A: Which reaction have a positive ∆Srxn ?

Q: 7. Ca(s) / Ca+2(aq) // Cr+3(aq) / Cr(s) 8. Mg(s) / Mg+2(aq) // Fe*2(aq) / Fe(s)

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Q: You measured the pH of 2 solutions, a 0.1M HCl solution and a 0.1M acetic acid solution. Which of…

A: The pH and [H3O+] depends on the nature of acid being strong or weak .  Strong acid dissociate…

Q: Using your percentage composition of Calcium acetate, Magnesium hydroxide, Hydrogen cyanide.…

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Q: M %24 Identify each energy exchange as primarily heat or work, and determine whether the sign of the…

A: Work done on the system is denoted by positive sign while workdone by the system is denoted by…

Q: Consider the reversible reaction A(g) B(g) Which K values would indicate that there is more B than A…

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Q: Br SH

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Q: What will happen to the NO2 concentration at equilibrium if the [NO] is lowered NO2(g) N2O3(9)…

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Q: The elementary reaction 2 H,O(g) =2H,(g) + O,(g) proceeds at a certain temperature until the partial…

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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.