Question 3: The salt NaBrO(3) oxides Sn^2+ to SnCl(6)^2- in the presence of hydrochloric acid according to the equation 3 Sn^2+ (aq) + 18 Cl^- (aq)+ BrO(3)^- (aq) + 6 H^+ (aq) -> 3 SnCl(6)^2- (aq) + Br^- (aq) + 3 H(2)O A sample weighing 2.000g is
1: Consider mixing solutions of silver nitrate and calcium chloride. a. write a net ionic equation for the formation of the precipitate. b. If 200.0 mL of .300 M silver nitrate are mixed with 350.0 ml of .500 M calcium chloride, how many grams of precipitate are formed? How many moles of each ions are present after orecip
A 0.1mol/L aqueous solution of weak monoprotic acid (contains one ionizable hydrogen atom) has a hydrogen ion concentration of 0.001mol/L. The value of the ionization, Ka, for this acid is: a) 10^-5 (10 to the power of -5) b) 10^-2 (10 to the power of -2)
What color- red or blue- would you expect each of the following to produce when added to litmus: Milk of magnesia wine seawater coca-cola tomato juice
Calculate the entropy change when 100 g of argon is heated and compressed from 300 K, 1.0 atm, to 900 K, 17 atm, assuming ideal gas behavior. Cp=20.93 J/K mol
Explain solubility rules used to predict precipitation reactions. Predict if precipitation occurs in the mixing reactions of the following aqueous solutions: a) ammonium sulfate + iron(II) nitrate b) potassium iodide + lead(II) nitrate c) sodium nitrate + copper(II) sulfate d) ammonium iodide + silver nitrate.
Calculate the ground-state energy of a particle in a box of length a, that is subject to a perturbing potential of V(x) = Vx/a.
If I have the mass total and I'm trying to find the volume of one of the items that makes up the total mass? D=M/V
If a helium balloon breaks loose it rises into the atmosphere and at some point bursts. Explain why?
Materials vacuum chamber and pumper large marshmallow balloon Procedure Wear safety goggles. 1. Place one large marshmallow in the vacuum chamber. 2. Cover the chamber with the dome and insert the pumper into the rubber septum. 3. Raise and lower the pumper slowly and observe what happens to the marshmallow. 4. The
One problem that we will continue to face as the population of the earth steadily increases is fresh water. Even though there is an abundance of water on this planet, less than 5% of it can be used to sustain life. Therefore, new ways of purifying water are being developed. One of the best recent developments is using reverse
50 g of C16H34 are burned with insufficient oxygen for complete combustion to CO2. C16H34(s) + 16.5 O2(g) -> 16 CO(g) + 17 H2O(l) and some of the reaction forms CO2 and H2O(l) in the reaction C16H34(s) + 24.5 O2(g) -> 19CO2(g) + 17H2O(l) (P=1 bar, T=298.15K, heat change = -1945.2 kJ) 1. Compute percent C16H34 that reacted
Please provide some help deriving the ideal gas equation for a monatomic gas.
Calculate the fraction of Fluorine atoms at 1000 K in each of the first three electronic levels based upon the following data: Term symbol..................Wave number (cm^-1).....................Degeneracy P_3/2........................................0.0.................................................4 P_1/2.............
Calculate the ratio of molecules that are in the second vibrational level to those in the first level for HBr (g) at 300 K ( Wo = 2650 cm^(-1) )
The pressure of a sample of gas at a constant temperature of 25 degrees C is increased from 1.0atm to 1.3atm. If the original volume was 3.8 liters, what will the new volume (in liters) be?
1) When a mole of C2H4 is combusted it reacts with 3 moles of O2 to produce CO2 and H2O. How many moles of CO2 and how many moles of H2O are produced? 2) What is the mass in grams of 4.25 moles of Mg (NO3)2? 3) The overall reaction producing iron from an ore in a blast furnace is: Fe2O3 + 3CO --> 2Fe + 3CO2 How many
1) Calculate the hydrogen ion concentration and the pH of the solution formed when 0.020 gram-formula weight of nitric acid is added to one liter of aqueous 0.20 M ammonia solution. Assume no significant volume change upon addition of the acid. 2) Calculate the molar concentration of acetic acid at equilibrium in an acetic ac
1) Calculate the hydrogen ion concentration and the pH of the solution formed when 0.020 gram-formula weight of nitric acid is added to one liter of aqueous 0.20 M ammonia solution. Assume no significant volume change upon addition of the acid. 2) Calculate the molar concentration of acetic acid at equilibrium in an acetic ac
How do I calculate the moles of iron (ore sample) and how do I calculate the mass percent of iron in the ore from this problem; Ferrous ion reacts with permanganate ion Mno4 in acidic solution to produce the ferric ion Fe3. A 6.893 gram sample of ore was mechanically crushed and then treated with HCl which oxidized all the ir
Question: Ethylene glycol, C2H6O2 (MW=62.1mol) has a density of 40.0 mass percentage and a solution of ethylene glycol in water is 1.0514 g/mL at 20 EC. Calculate the molality of the solution. Calculate the molarity of the solution.
Hi, Please explain as ELEMENTARY as possible. Thank you (-: A liquid has a heat of vaporization of 35.5kJ/mol and a boiling point of 122 EC at 1 atm. What is its vapor pressure at 109EC?
Question: A solution of 0.2113 g of water dissolves in 25.0 g of a solvent which freezes at 11.5 EC below the freezing point for the pure solvent. What is the Kf value for this solvent?
Please help with understanding the math for the following question: Question: A solution is prepared by dissolving 17.75 g of sulfuric acid (H2S04;MW = 98.0 g/mol) in 93.2 g of water. If the density of the solution is 1.1094 g/mL, what is the molarity of the sulfuric acid?
Hi, Please explain the math as elementary as possible. Thanks. The vapor pressure of Ethanol is 115 torr at 34.9EC If H sub vap = 40.5 kJ/mol, calculate the temperature (in EC) at which the vapor pressure is 760 torr.
Which would you expect to exhibit the highest vapor pressure at room temperature? - Helium(Delta H fusion 0.02, Delta H vaporization 0.10) - Benzene(Delta H fusion 9.95, Delta H vaporization 30.8) - Water(Delta H fusion 6.01, Delta H vaporization 40.67) - Mercury(Delta H fusion 2.33, Delta H vaporization 56.9).
Attached is a graph-please explain how to find the solubility of KBr @ 60 Celsius.
Find the concentration of 500mg of alltrans retinol 0.1% per 1 ounce of solution. Vitamin A C20H30O F.W. 286.46 CAS 68-26-8 Ratings Health: 1 Flammability: 1 Reactivity: 0 Chemical Specifications: Assay Min. 99% Storage Information: LIGHT SENSITIVE, REFRIGERATE: Keep tightly clos
Why when heating and cooling three different separate substances in open containers does the mass change in two of them (one loss mass; the other gained mass) but stays the same in the third when it is known that mass is conserved in chemical reactions? Would it be because one gave off vapor, the second melted and the third was
In a certain binary solution, the activity of component 1 is given by R * ln(alpha_1) = R * ln(x_1) + A(x_2)^2 + B(x_2)^3 Where x_1 and x_2 are the respective mole fractions and A and B are constants. Derive an expression for alpha_2 (the activity of component 2) given that the equation above is valid over the entire conc