Hypothetical element X has 3 stable isotopes. The relative peak intensities are 58.74 for 180.0 u. 100.0 for 184.0 u. and 62.05 for 186.0 u. What is the average atomic mass for X? USE THE CORRECT NUMBER OF SIG. FIG. Answer: 184.0 x

Q: A 100 cm³ sample of weak base 0.10 M methylamine, CH, NH,₂, (K₁ = 3.7 x 10), is titrated with 0.25 M…

A: The Kb of methylamine is given to be 3.7×10-4. Its pKb can be calculated as: pKb=-logKb…

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A: We have to choose the correct option.

Q: ndicate how the concentration of each species in the chemical equation will change to reestablish…

A:

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A: In this question, we calculate the cell potential and equilibrium constant of the reaction.

Q: Calculate AG for the following reaction at 25 °C. 2C₂H6(g) + 70₂(g) → 4CO₂(g) + 6H₂0 (1) Round your…

A: signifies a change in Gibbs free energy that occurs under a particular condition, whereas  describes…

Q: References) Calculate the maximum wavelength of light capable of removing an electron for a hydrogen…

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Q: Calculate the cell potential and the equilibrium constant for the following reaction at 298 K: 2Cr³+…

A: The electrode with more negative reduction potential undergoes reduction. That means it behaves as…

Q: A certain rock contains 9.61 g of 40k and 1.4 g of its stable daughter isotope, 40 Ar. Assuming that…

A: At time t,Mass of 40K remaining = N(t) = 9.61 gMass of 40Ar = 1.4 gInitially at time t=0,Mass of 40K…

Q: 8 How many grams of C₂H6 would contain 7.06 × 88 grams 176 grams 44 grams 22 grams 1024 atoms?

A: C2H6 Atomic maa -- carbon (C) = 12 g                               Hydrogen( H)- 1 g Molar mass =…

Q: How much heat energy is required to convert 38.0 g of solid ethanol at -114.5 \deg C to gaseous…

A: Given,mass of solid ethanol = 38.0 gInitial temperature = -114.5 oCFinal temperature = 162.4 oC

Q: QUESTION 8 What do you expect the electrons in an atom to do if they are slowly hit by electrons…

A: As the energy is just under n=3.So there is no chance to jump the electron from n=2 to n=3.   There…

Q: Ammonium phosphate NH43PO4 is an important ingredient in many fertilizers. It can be made by…

A: The given mass of ammonia = 7.5 gThe mass of ammonium phosphate produced = ?

Q: 3. Cl(aq) + Ag+¹(aq) →

A: Given reactant are- Cl-(aq) + Ag+(aq)  -----> ??? The reaction between Cl- (aq) and Ag+(aq) is…

Q: 30. The electrical potential for the * reaction between nitric acid and copper, under standard…

A: The electrical potential for the reaction between nitric acid and copper, under standard conditions,…

Q: Which of the following gas samples would have the largest volume, if all samples are at the same…

A: Ideal gas law equation:- PV = nRT Here P is pressure, V is volume, n is no. of moles of gas, R is…

Q: A reaction of 34.9 g of Na and 43.5 g of Br₂ yields 45.5 g of NaBr. What is the percent yield? 2…

A: Percentage yield is the yield of a product with respect to its theoretical yield.

Q: What are the products obtained in the electrolysis of a molten mixture of KBr and KCI ? Check all…

A: Answer:In electrolysis process, oxidation always takes place at anode and reduction always takes…

Q: Trisodium citrate (Na3C6H5O7) dissolves to give Na+, C6H507 C6H7O7. Which of the following is a…

A: We have to find out charge balance equation when Trisodium citrate is dissolved.

Q: Using standard heats of formation, calculate the standard enthalpy change for the following…

A: Given CaCO3(s) →CaO(s) + CO2(g)

Q: A sample of crude oil contains 3.01 mMnaphthalene, 11.6 mMmethylnaphthalene, 23.6…

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Q: Calculate the pH of 0.10 M Zn(NO3)2, which dissolves to give 0.10 M Zn²+ (pK₂ = 9.0) and 0.20 M NO3.…

A: We need to determine pH due to the hydrolysis reaction of 0.1M Zn2+. Given: PKa=9.0…

Q: Vaporization at the normal boiling point (Tvap) of a substance (the boiling point at one atm) can be…

A: ∆Svap = n ×∆HvapT When T = temperature in K n = mole of water vaporize

Q: What is the pOH of a 0.123 M solution of Na₂CO3 and 0.0243 M solution of NaHCO3 if the pk, is 3.68?…

A: Given, To determine :

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A: A collection of chemically inert, randomly moving particles is known as an ideal gas. The only…

Q: At a certain temperature, the pH of a neutral solution is 7.56. What is the value of Kw at that…

A: Consider the given information as follows;pH = 7.56

Q: Consider the reaction N2(g) +202(g) →→2NO2(g) Using the standard thermodynamic data in the tables…

A: Solutions  The given balanced chemical reaction is  2 N2 (g) + O2 (g) →2N2O (g) Calculate ∆Grxn of…

Q: A 17.2 mL solution of 0.100 mol L-¹ HF is titrated using 0.150 mol L-1 NaOH. What is the pH of the…

A: Answer:Buffer solution is a type of solution that resists the change in its pH on adding small…

Q: 3. Calculate the mass percent of the solution containing 5.45 g of KCI in 50.0 g of water. 4.…

A: #1) Given that :Mass of NaCl = 5.45 gMass of water = 50.0 gMass of solution = 5.45g + 50.0g = 55.45…

Q: At 25\deg C temperature, 0.6 mole N204 is produced in the reaction of N204(g) = 2NO2 (g) at…

A: The purpose of this question is the percentage of N2O4 in an 8 liter kettle, keeping the temperature…

Q: Which of the following will decrease the rate of a chemical reaction? O Decreasing the temperature O…

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Q: Cesium-137 is radioactive and has a half life of 30. years. Calculate the activity of a 2.3 mg…

A:

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Q: A solution was prepared by mixing benzene (CeHe) and carbon tetrachloride (CCL). Given that the mole…

A: Given,moles of carbon tetrachloride ( CCl4 ) = 5.85 molmole fraction of CCl4 = 0.919

Q: Calculate AG at 298 K for the following reaction: I2(g) + Cl₂(g) = 2IC1(g), K,₂ = 81.9 Express your…

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Q: The gas tank of a certain vehicle holds 22.9 gallons. How many pounds of carbon dioxide are produced…

A: 1 gallon = 3.75 litres

Q: Terephthalic acid, used in the production of polyester fibers and films, is composed of carbon,…

A: Given:Mass of terephthalic acid= 0.6943gMass of CO2 produced in combustion analysis = 1.471g Mass of…

Q: Calculate the pH and the concentrations of all species present (H₂O. OH HIO,; and IO, ) in 0.0520 M…

A:

Q: Name each ionic compound based on its formula. 1. Ca(OH)2: 2. C03PO4: 3. Al(IO3)3: 4. Na₂CO3:

A: Ionic compounds consist of two types of ions: cations (positive ions) and anions (negative ions).The…

Q: How many moles of hydrochloric acid are required to react completely with 1.48 L of oxygen gas…

A: The volume of oxygen gas = 1.48 LThe temperature of the oxygen gas = The pressure of the oxygen gas…