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An al strip is placed in CuSo4 solution 1) would you expect a spontaneous reaction to take place, based on the net potential? 2) If your answer is yes, what would you observe? 3) State a chemical equation that explains your predicted observations?
Many people have 900 MHz phones where this refers to the frequency of radiation it uses to communicate. What energy does this correspond to (in joules/photon)
Assume the caffeine solution is 15 mg of caffeine per mL. A student used 5 mL of caffeine solution in both part A and part B. Crude yields was 68 mg from the dichloromethane extract and 47mg from the MTBE extract.
What volume of a concentrated { HCl} solution, which is 36.0% { HCl} by mass and has a density of 1.179 {g/mL}, should be used to make 5.30L of an {HCl} solution with a {pH} of 1.7.
The decomposition of ozone in the upper atmosphere is facilitated by NO. The overall reaction and the rate law are O3 + O ---> 2O2 rate = k[O3][NO]
The half-life of a certain radioactive element is 1250 years. What percent of the atoms remain after 7500 years?
What is the coordination geometry about the vanadium ion incrystals of the alum? Write balanced equations for each reduction step. Assuming an average current of 1.75amps is passed during theelectrolysis, calculate how long it would take to reduce ..
A student poured the hydrogen peroxide unknown into a clean, wet erlenmeyer flask. The stdent thought that as long as the flask was clean, this preactice would not lead to an error in the results. Briefly explain.
Titration of 15mL of 0.125M unknown base with 0.103M HCl required 18.2mL to reach the equivalence point. the pH at the equivalence point was 2.74.
at 25 degrees C a saturated solution of a metal hydroxide has a pH of 9. What is the value of the solubility-product constant (Ksp) of M(OH)2 at 25 degrees C?
The valence electrons of group 5A elemnts are in the 6s subshell. 8. The highest principle quantum number of period 2 elements is 2.
For a solution containing 0.0060 M calcium nitrate and 0.057 M nitric acid, calculate the activity of the calcium ion.
What is the substance being oxidized?
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