5 attempts left Check my work Enter your answer in the provided box. A constant current...
Enter your answer in the provided box. A constant current is passed through an electrolytic cell containing molten MgCl2 for 13.0 h. If 9.80 ×105 g of Cl2 are obtained, what is the current in amperes?
please help me! Enter your answer in the provided box. A constant current is passed through an electrolytic cell containing molten MgCl2 for 15.0 h. If 8.70 x 109 g of Cl, are obtained, what is the current in amperes?
3 attempts left Check my work Enter your answer in the provided box. A construction company is installing an iron culvert (a long cylindrical tube) that is 43.0 m long with a radius of 0.600 m. To prevent corrosion, the culvert must be galvanized. This process is carried out by first passing an iron sheet of appropriate dimensions through an electrolytic cell containing Zn2+ ions, using graphite as the anode and the iron sheet as the cathode. If the voltage...
2 attempts left Check my work Enter your answer in the provided box. A construction company is installing an iron culvert (a long cylindrical tube) that is 49.0 m long with a radius of 0.850 m. To prevent corrosion, the culvert must be galvanized. This process is carried out by first passing an iron sheet of appropriate dimensions through an electrolytic cell containing Zn2+ ions, using graphite as the anode and the iron sheet as the cathode. If the voltage...
3 attempts left Check my work Enter your answer in the provided box. Sodium stearate (C17H3sCOONa) is a major component of bar soap. The K, of the stearic acid is 1.3 x 10 What is the pH of 10.0 mL of a solution containing 4.10 g of sodium stearate?
3 attempts left Check my work Enter your answer in the provided box. A 52.0-g sample of an unknown metal at 99°C was placed in a constant-pressure calorimeter containing 80.0 g of water at 24.0°C. The final temperature of the system was found to be 28.4°C. Calculate the specific heat of the metal. (The heat capacity of the calorimeter is 14.4 J/°C.) Book J/g °C Ferences
3 attempts left Check my work Enter your answer in the provided box. ints The pH of a bicarbonate-carbonic acid buffer is 7.06. Calculate the ratio of the concentration of carbonic acid (H2CO3) to that of the bicarbonate ion (HCO3-). (Kg, of carbonic acid is 4.2 x 10-7.) eBook [H,C03] [HCO3-] 00 3 attempts left Check my work Enter your answer in the provided box. 01 ints Calculate the pH at the equivalence point in the titration of 50.0 mL...
attempts left Check my work Enter your answer in the provided box. A 4864g piece of copper tubing is heated to 89.5°C and placed in an insulated vessel containing 159 g of water at 22.8°C. Assuming no loss of water and a heat capacity for the vessel of 10.0 J/°C, what is the final temperature of the system (c of copper = 0.387 J/g.°C)? 18. 01
3 attempts left Check my work Enter your answer in the provided box. What is the value of n for an electron that emits a photon of wavelength 92.69 nm when it returns to the ground state in the H atom?
points attempts left Check my work Enter your answer in the provided box. -1 The rate constant of a first-order reaction is 3.00 x 10 s 145 kJ/mol, calculate the temperature at which its rate constant is 7.65 x 10 S at 350.°C. If the activation energy is References eBook & Resources