Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
A galvanic cell Zn / Zn2+ // Cu2+ / Cu generates a current of 4.00 Amperes for 1.00 hour. The cathode increases in mass by 10.0g . If charge on an electron is 1.602 x 10-19 coulombs/ electron.
How many ATOMS of xenon are present in 3.25 moles of xenon trioxide. How many MOLES of oxygen are present in 9.37E+22 molecules of xenon trioxide
Write the net ionic equations and calculate the enthalpy of neutralization for the net ionic equations:
Potassium iodate, KIO3, and bleach's hypochlorite ion, ClO negative, are oxidizing agents. What do they oxidize in this experiment
Write the balanced net ionic equation for the standardization of the sodium thiosulfate solution by combining IO3-(aq) + 8I-(aq) + 6H+(aq) ----->3I3-(aq) + 3H2O(l)
The tank can hold a pressure of 50.0 atm before bursting. During a fire the gas is heated to 500 C. What is the gas pressure, and will the tank contain the gas without bursting
Zinc is used to make galvanized iron pipes. These pipes are protected from the rust reactions that would normally occur. Which statement best explains why zinc is used
Hypothesize as to the type of electrolyte the following solutions would be. Justify you answer from a chemical standpoint.
Which of the following correctly shows the oxidation numbers for each of the elements in H2PO4?, I2, and Al(OH)4
when 5.0g of KOH is added to 100mL of water , the temperature of the solution increases by 3 degree Celsius . assume the density of the solution to be 1g/mL and specific heat capacity of the solutio
Calculate the pH of the following solutions with the given [H+] or [OH-] and indicate whether the solution is acidic or basic
Suppose that the calorimeter shown here was used to determine the energy change for an acid-base reaction. An acid/base reaction solution was made by combining 150 mL of 0.5 M HCl of 50 mL of 1.00 M N
What would you expect to see in a reaction between salicylic acid and ferric chloride, and why
Recent research on the solubility of Greenockite, a thermodynamically stable form of cadmium sulfide (CdS), reveals that mildly acidic solutions with sulfide concentrations between 10-4 and 10-3 M c
Write balanced equations of toulene, isopropylbenzene, ethylbenzene, t-butylbenzene with bromine in the presence of dichloromethane
Calculate the molar solubility of calcium oxalate (CaC2O4) in a 0.080M calcium chloride solution. The Ksp of calcium oxalate is 2.3*10^-9
Calculate the mass of Zinc hydroxide (Zn(OH)2) that will dissolve in 500ml of pure water. The solubility constant for zinc hydroxide is 4.2*10^-17
A buffer is initially 0.180M in 4-nitrophenol (HC6H4NO3) and 0.200M in potassium 4-nitrophenolate (KC6H4NO3). The Ka of 4-nitrophenol is 3.8*10^-4 and the buffer has a pOH = 3.47. If 0.20g on NaOH w
When 200ml of 0.11M hydrochloric acid (HCl) is mixed with 800ml of 0.10M methylamine (CH3NH2), write the net ionic reaction that favors products and occurs as the solutions are mixed. Then write the
You measure 50,000 decays of a radioactive sample in 20 seconds. You measure the same sample 50 days later and observe only 10,000 decays in 20 seconds. What is the half life of the radioactivity
A 50.00-mL sample of aqueous Ca(OH)2 requires 34.66 ml of a 0.966 M nitric acid for neutralization. Calculte the concentration (molarity) of the original solution of calcium hydroxide
soultion of silver nitrate is mixed with 400.0 ml of 0.200 M calcium chloride. What is the concentration of cl- in solution after the reaction is complete
A gaseous mixture contains 407.0 Torr of H2(g) , 377.5 Torr of N2(g) , and 83.3 Torr of Ar(g) , calculate the mole fraction, X, of each of these gases.
elements from lanthanum to lutetium, As the atomic number gets larger, the atomic radius be same or decreased. How do you account for this general trend
Calculate the molality of ions in a solution made by mixing 5.14 g of CaCl2, MW=110.98, in 79.38 mL of water at 37.0°C. The density of water at this temperature is 0.9933 g/cm3. The answer is 1.