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If I take a 4.72 gram sample of cesium and react it with oxygen to form 5.86 gram of the metal oxide, what is the formula of the oxide? You must show all work to receive credit.
1g soil has been spiked with 0.1ml of 100 ppm (v/v) trimethylbenzene and subsequently extracted with 250 mL pentane. The extract is then measured with GC-FID.
Question- What is the mass percent concentration of the following solutions. a) Dissolve 0.595mol of citric acid, C6H8O7, in 1.00 kg of water. b) Dissolve 0.135mg of KBr in 5.00 mL of water. c)Dissolve 5.60g of aspirin, C9H8O4, in 145 g of dichlorome..
HBr dissociates into it'd gaseous element H2 and Br2 at elevated temperatures. Compute the percent dissociation at 375 degrees and 1 atm. Explain what would be the percent dissociation at 375degrees and 10 atm?
Problem- Li can be determined by flame atomic absorpion spectrophotometry at 670.8 nm. How is this possible, given the strong Li emission from the flame at this wavelength
Which of the following is an accurate comparison of the properties of nitrogen and oxygen. A. Nitrogen uses more oxidation states in its compounds than oxygen does
What is the final temperature in a squeezed cold pack that contains 50.0g of NH4NO3 dissolved in 125 mL of water? Assume a specific heat of 4.18 for the solution, an initial temperature of 27.0 C, and no heat transfer between the cold pack and the..
Calculate the standard entropy change for the following reaction at 25 °C. Mg(OH)2(s) + 2HCL(g) --> MgCl2(s) + 2H20(g)
Determine the pH at the following volumes of titrat added: A.0.00mL B. 5.00 mL C. 10.00 mL D. 15.00 mL E. 20.00 mL F. 25.00 mL, Identify the amphoteric substance in this process.
Calculate the pH of an aqueous solution that is 0.020 M in HNO3 (aq) at 25 degrees Celcius. Is the solution acidic or basic
What is the initail pH of this solution of hypobromous acid. What is the pH of the solution at the equivalence point
What is the molecular formula of each compound. (Type your answer using the format C6H12O6 for C6H12O6 and use the same order of the elements as in the empirical formulas.
why is it important that none of the solid CaCl2 be included in the final distillation of 1-bromobutane?
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