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Problem- The phosphate in a 4.258 g sample of plant food was precipitated as Ag3PO4 through the addition of 50.00 mL of 0.0820 M AgNO3. The solid was filtered and washed. The collected washings were diluted to 250 mL. Titration of a 50mL sample of the diluted washings required 4.64 mL of 0.0625 M KSCN. Calculate the percent phosphate in the sample.
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Consider the gas phase reaction: 2SO2(g) + O2 (g) 2 SO3 (g). delta H°=-198 kJ/mol. a) How would you change temperature, pressure, and volume of the container to maximize production of SO3. Increase, decrease, or expect no effect
2-iodo-4-methylpentane was refluxed for an hour in the presence of sodium isopropoxide. Name and draw the product(s) of this reaction clearly showing the stereoselectivity and regioselectivity of the reaction.
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the recommended adult dose of elixophyllin a drug used to treat asthma is 6 of body mass. calculate the dose in
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The absorbance maxima observed for the following cobalt complexes ([Co(NH3)6]3+ ?max = 470 nm, [Co(NH3)5Cl]2+ ?max = 560nm, [Co(NH3)4Cl2]+ ?max = 630 nm, and [Co(NH3)3Cl3] ?max = 680 nm) can be identified with transitions involving d-electrons. a)..
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A volume of 80.0 ml of H2O is initially at room temperature (22.0 C). A chilled steel rod at 2.00 C is placed in the water. If the final temperature of the system is 21.1 C , what is the mass of the steel bar?
How many total calories do you consume from these three organic substances when you eat 1 candy bar 3 times a day?
Five structural isomers have the formula C6H14. Where needed, draw the structure and give the IUPAC name of all five isomers
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