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[DOC File]Chapter 13 worksheet #1
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mass fraction = mass of component / total mass of soln. mass % = mass fraction x 100. parts per million/billion/trillion (ppm/ppb/ppt) ppm = (mass fraction) x 106. ppb = (mass fraction) x 109. ppt = (mass fraction) x 1012. Used for very dilute solutions (for example pollutants in drinking water). Notice that mass percent could also be called ...
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[DOCX File]AP Chemistry
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(2)When the compound is analyzed for N content only, the mass percent of N is found to be 28.84 percent. Determine the mass, in grams, of N in the original 1.2359 g sample of the compound. (3)Determine the mass, in grams, of 0 in the original 1.2359 g sample of the compound.
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PERCENTAGE COMPOSITION WORKSHEET
(a) the percent of sodium (by mass) in the hydrate (b) percent of . TOTAL. oxygen (by mass) in the hydrated compound (c) percent of water (by mass) in the hydrate. 4. Calculate the percentage of nitrogen (by mass) in ammonium nitride. 5. Calculate the number of GRAMS of magnesium in 50.0 g of magnesium sulfide.
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[DOC File]Exercises (Mass Percent)
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5. What mass of NaF must be mixed with 25 mL of water to create a 3.5% by mass solution? 6. An 800 g solution of Kool-Aid contains 780 g of water. What is the mass percent of solute in this solution? 7. What is the mass percent of a solution created by adding 10 g of olive oil to 90 g of vegetable oil? 8.
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[DOC File]PERCENT ERROR WORKSHEET
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The Handbook of Chemistry and Physics lists the density of a certain liquid to be 0.7988 g/mL. ... Prove your answer. 5. An object has a mass of 35.0 grams. On Anthony’s balance, it weighs 34.85 grams. ... The second ratio will be % over 100. From here, you cross multiply and solve just like you do for other percent problems. METHOD. 1 ...
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[DOCX File]AP CHEMISTRY PRACTICE 3.11 - 3.13
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Calculate the mass percent of Co in the 0.630 g sample of the ore. The student in the previous problem used a spectrophotometer to determine the abs o rbance of each of the standard solutions at a wavelength of 510 nm.
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Mass percent problems chemistry