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If you remove a piece of paper with a secret message written with lemon juice from a tincture iodine bath and let it dry, what will happen over a long period of time? Explain why?a) 30 minutesb) 1 hourc) 2 hours
How many moles of KMnO4 are present in 25.0 mL of a 0.0900 M solution?
A proton in a linear accelerator has a de Broglie wavelength of 158 pm, What is the speed of the proton?
You are titrating 150.0 mL of 0.070 M Ca2 with 0.070 M EDTA at pH 9.00. Log Kf for the Ca2 -EDTA complex is 10.65, and the fraction of free EDTA in the Y4- form, ?Y4-, is 0.041 at pH 9.00. Calculate the concentration of Ca2 at V = 1/2 Ve. Calculate..
Calculate the pH of a solution formed by mixing 65 mL of 0.30 M NaHCO3 with 75 mL of 0.30 M Na2CO3
What is a possible molecular formula of the hydrocarbon?
In a second experiment, I(electric current) broke down a sample of H 2 O into 1.45 grams of hydrogen and 11.51 grams oxygen. Are these results reliable with the law of exact extent?
how much energy is liberated when 366 g of mercury (c=0.139j/g degrees celsius)cools from 77.0 C to 12.0 degrees celsius?
Draw the LUMO Huckel MO for the cation 1, 3, 5-heptatriene (carbocation is carbon 7). Also, please state the number of pi electrons in this conjugate system
The Cl^- concentration in the water analysis given has been questioned. What concentration of Cl^- (mg/L) would make the cations and anions balance?
Fe2O3(s) + 3CO(g)-> 2Fe(s) + 3CO2(g) Based on this equation, how many moles of carbon monoxide (CO) are needed to react completely with 1.75 moles of iron (lll) oxide (FeO3)??
A student collects 22.4 mL of a gas by the process of water displacement at a temperature of 0 °C. If the barometric pressure is 764.6 torr and the vapor pressure of water at 0 °C is 4.6 mmHg,
when NaOH is added to this solution, a white precipitate forms. Using an equation, provide the identity of the white precipitate and explain its formation.
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