9. If the combustion of 4.00 grams of magnesium results in the actual yield of 5.00 grams of magnesium oxide, what is the percent yield of the reaction? 2Mg(s) + O2(g) 2MgO(s)

Q: What is the molarity of a solution made by dissolving 15.0 g of NaOH (Molar Mass= 40.0:g) in enough…

A: Molarity (M) :-  The number of moles of the solute dissolved in one litre of the solution is defined…

Q: 9. The Friedel-Crafts alkylation of benzene often fails to provide only the mono-alkylated product…

A: Friedel-Crafts alkylation gives a mixture of mono and polyalkylated.

Q: 3. Rank the rings below from most activated to least activated.

A:

Q: 31. To what volume should you dilute 50.0 mL of a 12 M stock HNO3 solution to obtain a 0.100 M HNO3…

A: #31 show work    HNO3    Before dilution After dilution Molarity M1= 12 M M2 =0.100M Volume…

Q: 1. Determine empirical formula and molecular formula for the compound that is 25.5% carbon, 6.38%…

A: Given: molar mass is close to 100 g/mol % carbon = 25.5 % % hydrogen = 6.38 % % sulphur = 68.1 %…

Q: 3. How many moles are there in 2.22 x 10ª g of (NH4)2SO4?

A:

Q: 18. What is the molarity of a sodium hydroxide solution if 10.00 grams of NaOH is dissolved in water…

A: Molarity is defined as number of moles of solute (NaOH) present in 1 litre of solution. Molarity  =…

Q: ts) The heat of fusion of water is 6.01 kJ/mol. The heat capacity of liquid water is 75.3 J/mol · K.…

A:

Q: #13 please show work

A: The molar mass of Mg(CN)2 is 76.3398 gmol-1  In Mg(CN)2 , there is 1 mol Mg, 2 mol Carbon and 2 mol…

Q: 1) Molten metal chloride (MC13) subjected to a current of 6.50 A for 0.388 hours deposits 1.41g of…

A: It is given that current = and time for which it flows Charge,

Q: A saturated solution of a nonvolatile electrolyte AB exhibits an osmotic pressure of 74.4 torr at 25…

A: The osmotic pressure is given by  Osmotic pressure in atm = i X CRT where i = Van't Hoff factor =…

Q: Question 1 | 1 Consider the equilibrium at 392° C: 2A +B2 C. The partial pressures are found to be:…

A: P(A)=6.70atm P(B)=10.1atm P(C)=3.60atm Kp=?

Q: PLS HELP ASAP ON ALL ASKED QUESTIONS AND SHOW ALL WORK

A: a) Rate law , Rate = k[NO]2[H2] b) overall order = 3 c)Rate constant, k = 5.0×105 M-2s-1d) Rate =…

Q: 13) A pi complex (T-complex) is formed between an alkene and an electron deficient reagent such as…

A:

Q: 7. The initial pressure of a gas was 0.874 atm when it occupied 98.2 mL. What is the new pressure if…

A: According to Boyle's law, volume is inversely proportional to pressure (at constant temperature).…

Q: MISSED THIS? Read Section 17.9 (Pages 765-769). Consider a 0.14 M solution of a weak polyprotic acid…

A: Given,  Molarity of H2A = 0.14 M Ka1 = 1.0 x 10–4 Ka2 = 1.0 x 10–6

Q: 12. Balance the following equations. Reaction Al(OH)3 (s) + HCl(aq) → AICI3(aq) + H2Om What me K2CO3…

A: Given, the chemical reactions as follows,  a)   Al(OH)3(aq)+HCl(aq)→AlCl3(aq)+H2O(l)b)…

Q: 10. Balance the following equations: Ca(NO3)2(aq) + Na,SO4(a9) → CASO466) _NaNO3 а. b. Ni (s) + CaO…

A: Interpretation - To balance given reactions

Q: 3) Aluminum oxide reacts with solid carbon to form aluminum metal and carbon monoxide gas. How many…

A: The reaction of  formation of Aluminium metal , using Aluminium oxide and solid carbon  gas,…

Q: #75 only please show work

A: In automobile airbags, sodium azide decomposes into sodium metal and nitrogen gas. The reaction for…

Q: The hydrogen gas formed in a chemical reaction is collected over water at 30.0 °C at a total…

A: 67.  At 30°C the vapor pressure of water is 31.8 mm Hg. Simply subtract the pressure water vapor…

Q: 2) Identify the base that is best suited to do the following conversion. Br Draw the expected…

A: In the given reaction the secondary alkyl bromide reacts with the sterically hindered strong base to…

Q: Part C 13.0 moles of gas are in a 8.00 L tank at 23.6°C. Calculate the difference in pressure…

A: Real gasses have attraction so they have less pressure than ideal gasses

Q: Number 1 through 4 show all work please

A: Hi, as you have posted multiple questions. As per our guidelines, we will answer the first three…

Q: 4. Rhodium has a density of 12.41 g/cm³ and crystallizes with the face-centered cubic unit cell.…

A: Rhodium has a density of 12.41 g/cm3 and crystallizes with the face-centered cubic unit cell.…

Q: 2NO (g) + Br2 (g) 2NOB (g) At equilibrium [NO] = 0.5 M, [Br] = 0.25 M. and [NOB1] = 3.5 M. %3! %3D

A: As asked by you, Solving Question #5. 5. The given concentrations at equilibrium: [NO]=0.5 M…

Q: B. If the pH of a weak acid solution is 2.500 and the solution has a concentration of 0.100M, what…

A: Given: pH = 2.5 Concentration = 0.100M

Q: Which of the following reactions is/are endothermic? Choose ALL that apply. a. C(s) + O2(g) → CO2(g)…

A: Identify the reaction is exothermic or endothermic ----

Q: ▾ Part A Balance this equation, and then enter the coefficients, in order, below. CH4 (g) + Br₂(g) =…

A:

Q: 16. A syringe initially holds a sample of gas with a volume of 285 mL at 355 K and 1.88 atm. To what…

A: For the phase change of the ideal gas the temperature, pressure, and volume of the initial state and…

Q: 2. Rank the molecules below from most reactive in Diels-Alder reaction to least reactive. Explain…

A: Diels-alder reaction involves cycloaddition of diene with dienophile to give six member cyclic…

Q: 6. What is the final molarity that would result if you diluted 180.0 mL of a 1.55 M HCl solution to…

A: Initial molarity of HCl solution = 1.55M Initial volume of HCl with 1.55 molarity = 180.0mL Final…

Q: The following table contains some standard enthalpies of fomation, AH. at 298 K Constants P Part A…

A: Given: Standard enthalpy of formation of C3H8(g) = -103.85 kJ/mol Standard enthalpy of formation of…

Q: 4. The reaction between solid sodium and iron (III) oxide is one of a series of reactions that…

A: *  Given data=>     Weight of each reactant is 25 g * Molar masses=>       molar mass of Na =…

Q: 5. Bobby and Jane dissolve 13.4 g of solid potassium iodide in water, then pour the solution into an…

A: In every chemical reaction, reactants react to give the products. The reaction can be expressed as a…

Q: 29. If 123 mL of a 1.1 M glucose solution is diluted to 500.0 mL, what is the molarity of the…

A: Given data: 123 mL of 1.1 M glucose solution Volume of diluted solution 500 mL

Q: A laboratory procedure calls for making 400.0 mL of a 1.1 M NaNO3 solution. What mass of NaNO3 (in…

A: Use molarity as a conversion factor in order to convert liters into moles. Then use molar mass to…

Q: 9. Determine the following about the reaction shown below. 2NO + 5 H2 → 2H20 + 2 NH3 a. The mass of…

A:

Q: Determine the mass, in grams, of 0.790 moles of Mn (1 mol of Mn has a mass of 54.94 g).

A: The answer to the following question is given as -

Q: 1) How many moles of carbon dioxide are produced when 2.25 moles of ethane (C2H6) combust?

A: Combustion :-  The burning of a compound in excess of air or oxygen is called combustion .…

Q: 14. Calculate the volume occupied by a sample of silver if it has the mass of 9.12 g and its density…

A: Density - Mass occupied by unit volume of a substance is known as Density. Formula:  Density (d) =…

Q: #11 please show work

A: Given that, 40K and 31P3- , to find the values in given table.

Q: 35. What is the minimum amount of 6.0 M H2SO4 necessary to produce 25.0 g of H2(g) according to the…

A: Well-balanced chemical equation:                           2Al(s) + 3H2SO4(aq) →  Al2(SO4)3 (aq) +…

Q: A student used two scales to measure the length of a nail and recorded the following measurements:…

A: In the measurement of a set, accuracy is the closeness of the measurements to a specific value,…

Q: 8. Which of the following would lead to a higher percent yield than predicted? a) Not allowing the…

A: 8. The correct answer is:a) Not allowing the reaction to go to completionNot allowing the reaction…

Q: What is the mass number for an atom of osmium containing 76 protons and 112 neutrons?

A: The number of protons in the nucleus of the atom is equal to the atomic number (Z). The number of…

Q: 8. A 0.741 g sample of gaseous compound exerts a pressure of 0.822 atm in a 486 mL at 13.8 °C. What…

A:

Q: 8. How many grams of KNO3 are contained in 245 mL of 3.00 M KNO3 solution?

A: The molarity of the KNO3 solution is 3.00 M and the volume of the solution is 245 mL. The mass of…

Q: Methanol is prepared industrially according to the following reaction: CO(g) + 2H2(g) D CH3OH9),…

A: Given data, The enthalpy for the formation of methanol = -21.7kCal

Spectroanalytical Methods

Spectroanalytical methods measure the wavelength and intensity of radiations that are either emitted or absorbed by a molecular or atomic species. These methods are useful for evaluating the electronic or atomic arrangement of the molecules of a given analyte.