Identify the nuclide produced by the decay process. Write the whole nuclide, using the isotope tool. x x. He | 8. 28 13A1 28 14Si - co in

Q: Describe the contributions of the alchemist to the science of chemistry.; Give at least 10 sentences

A: Answer - Alchemy was a discipline that has roots in the ancient world but flourished during the Midd...

Q: The colorless gas N2O4 decomposes to the brown gas NO2 in a first order-reaction: N2O4(g) → 2 NO2(g)...

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Q: A solution is made by dissolving 0.550 mol of nonelectrolyte solute in 789 g of benzene. Calculate t...

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Q: molality

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Q: A drug can exert its pharmacological effect only if it is

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Q: Given a reaction in which reactant A is converted only to product B, what Keg results if, at equilib...

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Q: How much heat is absorbed by 80.0 g of iron (Fe) when its temperature is raised from 250C to 5000C? ...

A: Given: The specific heat of iron = 0.444J/g.oC Mass of iron = 80.0 g Rise in temperature = (500 - 25...

Q: 2. Data for the reaction: 2 NO(g) + O2(g) → 2 NO2(g) are given in the table below: Initial Rate (mol...

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Q: 1. Prepare a 2 M NaCl soln; 1000 ml final volume; MW = 58.5 grams

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Q: 3. XYZ, a non-electrolyte, is miscible (highly soluble) with water and its molar mass is 132 g/mol. ...

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Q: HN HN OH

A: The strength of an acid in an organic compound is directly proportional to the stability of the acid...

Q: by your instructor. Calculations 4. Calculate the mass of the hydrate (2 - 1) 5 Calculate the mass o...

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Q: moles

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Q: A. Determine the concentration of the glucose stock solution in mg/mL. B. Complete the table above b...

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Q: What is the minimum pressure in kPa that must be applied at 25 °C to obtain pure water by reverse os...

A: Given data :  Temperature (T) = 25oC                          T= (25+273)k                          ...

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Q: Kinetic studies of the reaction X + 2Y → W + 2Z yield the following data: Concentration of X (mol) C...

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Q: 3) What volume (in mL) of guanidine, CH5N3, is required to prepare 250 mL of the following solutions...

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

Q: 5. Provide the missing reactants or products for the following reactions. Show stereochemistry. NC.

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Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 333.0 g sample ...

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Q: Glasses are usually harder than plastics

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Q: What is the density of methane gas, CH4 at STP?

A: STP means standard temperature and pressure  Temperature is 0°C or 273 K  Pressure is 1 atm 

Q: Current Attempt in Progress The reaction 2A + 2B M+N has the rate law: Rate k[A]?. At 25°C, k = 0.03...

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Q: What's More Activity 4 - Complete the nucleosynthesis reactions below Given: Composition of each nuc...

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Q: C. PARAFFIN 1. Place a paraffin about the size of a rice grain in a dry test tube. Warm gently and a...

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Q: The diagram shows which level of structure of a protein? hydrogen bond CH, CH H.C CH, hydrophobic in...

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Q: What is the calculated equivalence point volume when 21.2 mL of 0.250M HI are titrated with 0.350M L...

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Q: 1) balance the following chemical equation for the reaction of hypothetical elements X, Y, and Z.  ...

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Q: Benzoic acid is a crystalline powder used as a food preservative. It contains 68.8% C, 5.00 % H, and...

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Q: Calculate molarity if solution in water (300K) has osmotic pressure of 3.00 atm.

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Q: CH,CH,CH,-OH Draw the structure of the product expected when each of the following alcohols is react...

A: All the reactions of alcohol given in the question are dehydrogenation reactions.

Q: ÇOO CH,OSO, -O H H -O H H H. ОН Н 2 H. ОН Н. H OSO,- H NHSO, CH,OH Po- H H ÇOO- H NHCCH, H OH H H. H...

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Q: 5. A metal crystalizes into the body-centered cubic unit (BCC) structure. If the radius of the metal...

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Q: How many g of sodium formate should be added to 250 ml of 0.2 M hydrochloric acid solution to obtain...

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Q: osmotic pressure ex certain so of a

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Q: Describe the formation of heavier elements during stars' formation and evolutions; Give at least 10 ...

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Q: Question 14 A 0.125 M solution of HNO2 has a pH = 2.08. What is Kg for HNO2?

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Q: In each reaction box, select the best reagent and conditions from each list. 1. reagent 1 2. reagent...

A: The given transformation involves two Friedel-crafts reactions and one reduction.  

Q: 4. Name the following compounds: a. CH,CH,CH,CH; CH, CH, M CH3 CH2 ČH2 CH3 b. CH-CH-C C-CH, CH, CH2 ...

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Q: Name the following compound Ho CH3 ュ-う-2Hコ-Hコ-HO CH3 2CH2 -CH2-ċ - c cHz CH3 -CH3 CH3

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Q: c/2 у y a (o72) Plane -b6 x' (a) (b)

A: crystallographic planes

Q: Explain the formation of magnesium and chlorine ions in magnesium chloride.

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Q: balance

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Q: A 50.0 mL sample of 0.350 M HBr is titrated with 0.200 M KOH. At what volume (in mL) of titrant adde...

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Q: . Provide a curved arrow mechanism for the transformation below. OCH3 Br2 enantiomer Br CH3OH

A: addition of Br2 to alkene leading to the formation of a cyclic intermediate stage.  attack of alcoho...

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.