theory

Q: alaced in w nartial pre

A: 04. (a) True statement When sugar is added, the sugar molecules dissolve into the water. The causes ...

Q: ne standard enthalpy of

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Q: The chemical bond in X2 can be broken with a photon. Given the following reaction: X2(g) → 2X(g) AH ...

A: The bond energy is the energy released when the bond between the two atoms are broken. In a photolyt...

Q: Which has the higher boiling point, a 0.2 molal ethylene glycol solution or a 0.1 lola CaCl2 solutio...

A: Vantt of factor = no. of ions/species after dissolving in solvent 

Q: 2. Put approx. 10 mL of vinegar (HC,H;O2) in a short glass bottle and add 1 piece of rust-free small...

A: The observation and calculation of acetic acid and iron is shown below:

Q: Your friend says water is a salt just like potassium chloride (KCI). Your friend is wrong. E bond an...

A: Water is not a salt like potassium chloride (kCl) because KCl is an ionic compound while water is a ...

Q: For questions 14-18. What wil| happen to the number of moles of SO3 in equilibrium with SO2 and 02 i...

A: According to lechatelier principal when a system is at equilibrium and it is distributed by some mea...

Q: Write the name (using oxirane and using epoxyalkane) of the epoxide given in the field provided. Inc...

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Q: 7. If the concentrations of products and reactants are equal, is the system at equilibrium? * O YES ...

A: If concentration of reactant and product are equal then reaction is in equilibrium or not ?

Q: What is the daughter nucleus produced when 10/Tm undergoes electron capture? Replace each question m...

A: An unstable radio active nuclei will always undergo decay to form stable nuclei 

Q: Prepare the following solution quantitatively using boiled distilled water  1. 250.0 mL 1.0 M stock...

A: 1.  250.0 mL 1.0 M stock HCl from 3.0 M HCl     Molarity ( M1) = 1.0 M     Volume  ( V1 ) = 250.0 mL...

Q: • For which of the following problems would ICP-MS be appropriate. Explain why. 1. For the character...

A: In mass spectroscopy,  ions are detected by their mass to charge ratio values. so for analysis in ma...

Q: work

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Q: 34. What is the property of water which makes it possible for autoionization of water? * a. Ambidext...

A: H2O, even pure water, has an amphiprotic nature. This means that a small amount of ions will form in...

Q: If 400 mL of a 18% v/v solution of methyl salicylate in alcohol is diluted to 1500 mL, the concentra...

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Q: Identify and explain the mistakes made in the following laboratory protocols:  A 1250 mg sample of ...

A: Before measuring the mass of any chemical compound, it is quite necessary to adjust the balance to z...

Q: Which factor will not increase the concentration of ammonia as represented by this equation? 3 H2 (g...

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Q: Consider an electrolytic cell with a steady current of 158 amperes which produces Als) (atomic mass ...

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Q: Acid rain is a growing worldwide environmental problem. Naturally, rainwater should have a pH of not...

A: Consider the given information is as follows; Volume (V) = 1200 m3 Density ρ =2.86 kg/m3 Molar mass ...

Q: In Thiosulfate (Redox Titration), why is there a need for a white background when titrating? the Sta...

A: For the standardization of sodium thiosulfate  potassium dichromate and potassium iodide solution is...

Q: a. What is the molarity of a 12 N H2C2O4 solution?  b. How many moles and how many equivalents of H...

A: Definition molarity : Molarity (M) is the amount (number of moles) of solute in a one liter of solut...

Q: A cylinder of compressed oxygen gas has a volume of 30 L and 100 atm pressure at 27 deg.celcius. Com...

A: PV = nRT  R is gas constant  P1/T1 = P1/T2

Q: Which of the following pair of organic molecules are enantiomers? CH3 Br and HOCH CuH CH3 Br CH,OH N...

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Q: What is the osmotic pressure of a 0.9% m/v solution of NaCl at 25 degrees celsius?

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Q: Calculate the molar solubility of CaF2 in 0.010 M CaCl2. Neglect hydrolysis of the fluoride ion. Ksp...

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Q: Calculate the moles of carbon dioxide, CO2, formed when 49.3  moles of CH4, react with an excess of ...

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Q: 1. Which equation represents the bond enthalpy for the H-Br bond in hydrogen bromide? A. HBr(g)-H(g)...

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Q: A 42.7 L of a gas tank is filled with 86.0 grams of CO2 at 12.0 0C, what is the pressure of the gas ...

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Q: For questions 9-13. Consider the reaction 2NOCI(g) = 2NO(g) + C12(g). If this reaction is at equilib...

A: M

Q: 10) Circle the carbon chirality center(s) and identify the configuration (R or S) of each one. Show ...

A: Write R/S configuration of the given compound--

Q: A 18.92 gram sample of copper is heated in the presence of excess fluorine. A metal fluoride is form...

A: Molar mass of Cu = 63.55 g/mol Molar mass of F = 19 g/mol Given mass of Cu = 18.92 g  Mass of metal ...

Q: 2. What mass of calcium carbonate CaCO3 (MM=100 g/mol) must be heated to form 3.00L of CO, gas at ST...

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Q: A non ionizing solid dissolved in water changed the freezing point to -2.79 degrees celsius. Calcula...

A: Answer :-  The concentration of non ionizing solid solution = 1.5 m  -------------------------------...

Q: The mass of 5.20 moles of glucose, C6H12O6 is   1.56 × 10‑21 g   31.2 g                       93...

A: Given, Moles of glucose (C6H12O6) = 5.20 mol Mass of glucose (C6H12O6) = ? Note; Molar mass of gluco...

Q: Identify and explain the mistakes made in the following laboratory protocols:  A 10.00 mM solution ...

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Q: What will be the final pressure of a sample of nitrogen with a volume of 885 cm3 at 725 torr and 25....

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Q: What are the primary, secondary and tertiary products of autoxidation reaction and their impact on f...

A: Autooxidation is a spontaneous oxidation process in the presence of air.  In the presence of air oxi...

Q: Determine the infrared spectra to the substances listed below. Identify the peak points that lead to...

A: Ir spectral values of given organic compounds.     As per our guideline we have to answer first thre...

Q: 2. Classify each nuclide as stable or radioactive. a. P ISP b.. Tc 30 43 C.. Tin-118 d. . 23 Pu 94

A: Radioactive isotopes are unstable atomic nucleus which can emit energy and particles like alpha, bet...

Q: 32. What molecule used as hydrated proton? * О а. Нзо+ (аq) O b. H+(aq) О с. Он (аq) O d. All of the...

A: About Hydrated proton.

Q: For the compound (Ca(OH)2) or calcium hydroxide, find the

A:   Percentage composition : relative mass of the each of the constituent element in 100 parts of it M...

Q: Which of these two absorptions would you expect belongs to the C – N and which to the C = N stretch?...

A: To solve this problem we will use the Hook's law .  Since we know that  Frequency = speed of light /...

Q: Given the following (fictional) lons: Polyatomic lon Formula with charge Element lonic Charge Losgat...

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Q: Charles’s Law

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Q: chemical symbol be

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Q: The amount of hydrocortisone in 50 g of 1% w/w hydrocortisone cream is ___________ g. To prepare a 1...

A: We have to add extra 0.25 gm of pure hydrocortisone . Explanation below:

Q: Consider an electrolytic cell with a steady current of 169 amperes which produces Al(s) (atomic mass...

A: Given data :  Current = 169 Amperes  Atomic mass of Al = 26.98 g.mol-  Mass of Al produced = 218 g 

Q: A 15.6 L sample of neon at 25.0°C and a pressure of 743 torr is kept at 25.0°C as it is allowed to e...

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Q: Write the IUPAC name of the structure given. Include stereochemistry if needed.

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Q: Dichlorine heptoxide (Cl2O7) is a highly reactive compound used in some organic synthesis reactions....

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Introduction to chemistry

Chemistry is a branch of science that deals with the analysis of material and the substances that comprise it. It also manages the properties of these substances and their reactions to form new substances. It is basically centered on particles and atoms that make up components and mixtures. These chemical species will in general connect using bonds.