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Question: Calculate the mass, in grams, of a single iridium atom (mIr = 192.22 amu ). Express your answer using four significant figures.
Which one of the following is the highest temperature?
What dilution would be necessary to get the absorbance of 62.2 down to 3.1
Question- Which of the following ''family'' of phosphate species is least likely to be present in your soda sample. Explain your choice. H3PO4 , H2PO4^- , HPO4^2, PO4^3
To find the of X-281, you prepare a 0.086 test solution of X-281. The pH of the solution is determined to be 2.70. What is the of X-281
What is the ultraviolet catastrophe? Explain why it was predicted and why this prediction
Considering the properties required of molecules for them to undergo steam distillation, explain why a treating mixture of vanillin and eugenol to steam distillation would result in distillation of eugenol only.
assume that the unshaded spheres in the buret represent h ions the shaded spheres in the flask represent oh- ions and
Write a balanced chemical equation for the standard formation reaction of gaseous hydrogen cyanide.
In order to analyze a commercial hydrogen peroxide solution by the procedure described in this experiment, you must first dilute the commercial peroxide solution with distilled water.
The activation energy of a certain reaction is 32.3kJ/mol . At 20 degrees C, the rate constant is 0.0130s^-1. At what temperature would this reaction go twice as fast? The equation that is given is ln(K2/K1)=Ea/R((1/T1)-(1/T2)) a. what is R in thi..
What minimum mass of succimer in milligrams is needed to bind all of the lead in a patient's bloodstream? Assume that patient blood lead levels are 0.560 mg/L , that total blood volume is 5.5 L , and that 1 mol of succimer binds 1 mol of lead.
The first ionization energies of As and Se are 947 and 941kJ/mol, respectively. Explain these values in terms of their electron configurations.
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