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Explain what quantity of excess reactant remains when 4.80 moles of Fe reacts with 3.93 moles of O2?
4Fe + 3O2 Æ 2Fe2O3
a) 0.23 mol Feb) 0.18 mol Fec) 0.87 mol O2d) 0.33 mol O
Would you expect the carotenoid pigment fraction to come off sooner or later than it did with 95:5 Hexane:Acetone? What effect would you expect if you used 100% hexane instead
What is the maximum number of moles of KClO3 that could form in the combination of 6.0 moles of Cl2 with 9.0 moles of KOH? Balanced equation is 3 Cl2 + 6 KOH goes to KClO3 + 5 KCl + 3H2O
In a titration experiment 26.1 mL of 0.807 M HCOOH neutralizes 22.7 mL of Ba(OH)2. What is the concentration of the Ba(Oh)2 solution
a solution containing 16.9 of a nonvolatile molecular compound in 250 g water has a freezing point of -0.744...what is
1. what mass of phosphorous trichloride forms when 125g of P4(S) reacts with 323g of chlorine gas?
How would you make a buffer with a volume of 2.0 L, pH of 5.0 and a strength of 0.25 M using 5.0 M acetic acid stock solution (Ka = 1.8x10-5) and sodium acetate ( NaO2C2H3 available as a solid salt FW = 82 g/mole).
When the third one to precipitate begins, what percent of the first two ions to precipitate still remain undissolved in the sol'n
What is the pH of a 0.3656 M solution of the sodium salt of a weak acid with a pKa of 3.745? The answer is not pH = pKa + log(salt)
Position the subsequent ionic compounds in order of decreasing amount of energy released in lattice formation- NaF, BaO, InN, and RbBr
the pressure of 4.90 liters of an ideal gas in a flexible container is decreased to one- third of its original pressure
the osmotic pressures required for this process can be as high as 20.1 . what would the molar concentration of the tree
why do we have to make sure we light the fire and remove the lighter quickly to burn the nuts
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