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Suppose 18.92mL of Na2S2O3 solution were necessary to titrate the iodine formed from 20.95mL of a 0.0100M KIO3 solution and excess KI, Explain what is the molarity of the Na2S2O3 solution?
Calculate the energy in the form of heat (in kJ) required to convert 325 grams of liquid water at 20.0 °C to steam at 115 °C. Assume that no energy in the form of heat is transferred to the environment
ATP is created from ADP and Pi in the mitochondria of most cells. this reaction is thermodynamically endergonic. what directly provides the energy for this reaction to occur
What would the atom ratio of 206Pb to238U be in a uranium mineral from a rock that is 1.0 × 10^9 years old? t1/2(238U)= 4.5 × 10^9 yr
If the molarity of stomach acid is 0.1 M (assumed to be HCl), how many grams of stomach acid will be "consumed" (i.e; neutralized) per gram of the antacid Ca(OH)2. Assume the denisty of stomach acid is 1.02 g/mL
2 NO(g) +Cl2->2NOCL(g) the observed rate law is Rate= K(NO)^2(Cl2). What is the reaction order with respect to nitrohen monoxide with respect to Cl2? Wht id the overall order
A white powdery solid, and asked to evaluate its purity and to determine whether it might be identical to a given sample of an illegal drug, a white crystalline solid. Clearly explain what you would do, and how you would interpret your results.
How does SEC distinguish between large and small molecular weights? Be specific here. Also why is SEC ideally suited for polymer analysis
If the pressure increases to 800. torr, how many moles of gas were added to the container? Assume a constant-volume container.
When no single electronic formula can be drawn for a stable molecule so as to maintain the octet rule and still fit the observed properties
Diagram the oxidation reaction (using expanded structural formula) of butane. Name the product
Calculate the molar mass of (a) a gas that has a density of 1.98g/L at STP and, (b) an unknown liquid for which 3.33 liters at STP is found to weigh 10.88g
Explain why, during the addition of soduim metasulfite, the reactionmixture was tested with starch-iodide paper. explain why acidification to pH2 and cooling was necessary to isolate the final product
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