Mass volume percentage formula
[DOC File]PERCENT ERROR WORKSHEET
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7. Shelby measured the volume of a cylinder and determined it to be 54.5 cm3. The teacher told her that she was 4.25% too high in her determination of the volume. What is the actual volume of the cylinder? 8. Walter gets a paper back in lab with “-2.75% error” written on it. He had found the mass …
[DOC File]Chemistry I-Honors
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three basic quantities – molar mass, molar volume, number of particles. mass units on the periodic table are actually dimensionless . listed as amu (atomic mass units) most commonly, if the “mole” being used is actually a “gram-mole”, then the mass on the periodic table is in units of grams. The quantity for that mass is 6.02 x 1023 ...
[DOC File]Mole Part I Practice Test - Smiley Science
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62. Sulfur dioxide can be used in preserving fruits and vegetables. Determine the percentage composition, by mass, of each element in SO2. 63. Sodium thiosulfate, Na2S2O3, can be used as a fixer in the field of photography. Calculate the percentage composition, by mass, of …
[DOC File]HOMEWORK ANSWERS
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Using the formula you found for the %-density ratio, determine the percentage of a wood block (ρ = 0.400 kg/L) that would be submerged in ethanol. Determine the density of an unknown metal that displaces 4.5 L of water and is found to have a mass of 25.4 kg.
[DOC File]THE MOLE
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The percentage purity of a substance can be calculated as follows: Percentage purity = mass substance would have if it was pure x 100. mass of impure substance EMPIRICAL AND MOLECULAR FORMULAE. The . empirical formula. of a compound is the formula which shows the simplest whole-number ratio in which the atoms in that compound exist.
[DOC File]Math Practice Test 2
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23. The volume of a cylinder is found by using the formula V = (r2h. How do the volumes of cylinder A and cylinder B compare? A. The volume of cylinder A is larger. B. The volume of cylinder B is larger. C. It is not possible to compare the volumes. D. The volumes of cylinder A and cylinder B are the same. 24.
[DOC File]UNIT 3 – WORKSHEET 1: MOLE PROBLEMS
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Find the molecular formula of a compound if its empirical formula is CH2O and its molar mass is 90 g/mol. CH2O = 12 + (2 x 1) + 16 = 30 g/mol. 90/30 = 3, so empirical formula x 3 + molecular formula =m so MF = C3H6O3 _____ Title: UNIT 3 – WORKSHEET 1: MOLE PROBLEMS Author: Fairfax County Public Schools Last modified by ...
[DOC File]Percent Composition Worksheet
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Calculate the molar mass for the following compounds. SiF4 KOH. Calculate the percent composition of carbon for the following compounds. CaCO3 CH4. Sn(CO3)2. Calculate the percent composition of nitrogen for the following compounds. N2O. Sr(NO3)2. NH4NO3. Calculate the percent composition for each element in C6H12O6 Glucose.
[DOC File]Synthesis & Analysis of a Complex Iron Salt
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The percentage oxalate in KxFe(C2O4)y.zH2O will be determined by titrating a solution containing a known mass of green salt with a standardized solution of 0.0100 M KMnO4. The mass and percentage of oxalate in the sample can be determined by measuring the volume, V, of KMnO4 of molarity, M, required to completely oxidize the oxalate ion (C2O4-2).
[DOC File]Chemistry
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8. What is the percentage of water in strontium chloride hexahydrate? (41) 9. What mass of selenium is found in 683 grams of sodium selenite, Na2SeO3? (312) 10. A sample of silver sulfide, Ag2S, has a mass of 62.4 grams. What mass of each element could be obtained by decomposing this sample? (54.3; 8.11) 23 Honors Chemistry. 2016-2017. 11.
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