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Vitamin C is known chemically by the name ascorbic acid. Determine the empirical formula of ascorbic acid if it is composed of 40.92% carbon, 4.58% hydrogen, and 54.50% oxygen.

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Percentage of Calcium Carbonate in marble sample? | Yahoo ...

Nov 02, 2011 · There is no CaCl2 in the sample!! If there was the answer would 109.1%. If you want the % of CaCO3 it is 98.3%. Moles of CO2 = 0.165 / 22.4 =0.00737 moles.

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The Percent Composition Of Caco In A Marble Sample Yahoo, What was the percent by weight of CaCO3 in the sample, the percent composition of #CaCO, find the percent composition of caco in a marble sample yahoo ansers, EXPERIMENT Calcium Carbonate Content of 01. 2018-8-14 · Calculate the number of moles of CaCO3 in your limestone samples, and ...

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Feb 25, 2010 · Chemistry homework qn on calcium carbonate? hi all...i have been given a chemistry assignment tt i do not know how to do..here it is : -i am given a sample of 0.8g of calcium carboanate and have to determine the percentage purity of calcium carbonate using volumetric analysis by .

What is the percent by mass of CaCl2 H2O in the ... - Yahoo

May 29, 2010 · A 0.972g sample of a CaCl2 2H2O/K2C2O4 H2O solid salt mixture is dissolved in ~150mL of deionized water, previously adjusted to a pH that is basic. The precipitate, after having been filtered and air-dried, has a mass of 0.375g. a. What is the percent by mass of CaCl2 * 2H2O in the salt mixture? b. How many grams of the excess reactant, K2C2O4*H2), reacted in the mixture?

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The sample was dissolved in water and reacted with an excess of silver ntirate in solution according to the following two equations, NaCl(aq)+AgNO3(aq)produces AgCl(s)+NaNO3(aq) KCl(aq)+AgNO3(aq) produces AgCl(s)+KNO3(aq) The total AgCl solid collected weighed 12.7052 g. Calculate the percentage of NaCl in the mixture.

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What is the chemical composition of limestone and ... - Yahoo

Mar 04, 2010 · More compression and heating by volcanic activity changes the sedimentary limestone into a metamorphic rock known as marble. The most famous marble quarries are in Italy - Carrara. Although marble is used as a work surface all three rocks have the disadvantage that adding acid causes them to give off carbon dioxide and disintegrate.

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(f) 1.82 Composition is the contents of a substance; structure is the arrangement of these contents. 1.86 (a) 4.67 g cm 3 (b) 2.56 dm3 (c) The sphere weighs 1950 kg; the thief is unlikely to be able to carry it. 1.88 (a) 60.6% Au by mass (b) 15 carat gold 1.91 (a) 2 protons, 1 neutron, 2 electrons (b) Tritium, is more massive. (c) A precision of would

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4 Sample Calculations (Cont.) Analysis of an Epsom Salt Sample Example 2 A sample of Epsom Salt of mass0.7567 g was dissolved uniformly in distilled water in a250 mL volumetric flask. Portions of the magnesium ion solution of volume10 mL were titrated using a 0.01000 M solution of EDTA by the method of this experiment. The mean corrected titration volume was 12.25 mL (0.01225 L).

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find the percent composition of caco3 in a marble . find the percent composition of caco3 in a marble sample yahoo ansers. CS Cone Crusher. . can be made when x 109 g of limestone (calcium carbonate) . Get Information; find the percent composition of caco3 in a marble sample ... Find Percent Composition.

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Subcategories. The ionic charges of group 1 and 2 metals are +1 and +2respectively. Group 15 & 16 the simple mono-atomic ions are -3and -2. Group 17 ions are -1. This can be explained by thefollowing elemnts in groups 1 and 2 lose 1 or 2electrons respectively to achieve a noble gas configuration whereasgroups 15...

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Gravimetric Analysis - wiredchemist

Gravimetric analyses depend on comparing the masses of two compounds containing the analyte. The principle behind gravimetric analysis is that the mass of an ion in a pure compound can be determined and then used to find the mass percent of the same ion in a known quantity of an impure compound.

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Chemical Composition Of Limestone - veciodecimo

what is the chemical composition of limestone? | Yahoo Answers. Jan 25, 2010· Best Answer: You're asking two different things there - the chemical composition and the percentage of each mineral. Pure limestone is calcite, which has the empirical formula CaCO3. So the mineral composition is calcite, and the chemical composition is:

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1.84g of mixtures of Caco3 And mgco3 upon heating ... - Yahoo

May 04, 2016 · GF=CaO/CaCO3=56/100=0,56 MgCO3 + Δ→ MgO + CO2(g) you calculate the gravimetric factor for the conversion of MgCO3 to MgO GF=MgO/MgCO3=40/84=0,48 the residue is CaO+MgO so you have 0,56y + 0,48(1,84-y) = 0.96 ----> y=0,96 so you have 0,96 g of CaCO3 and (1,84-0,96)=0,88 g of MgCO3 %CaCO3=0,96/1,84 x 100=52,17% %MgCO3=0,88/1,84 x 100=47,83%

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chemistry homework qn on calcium carbonate? | Yahoo Answers

Feb 25, 2010 · The molar ratio between CaCl2 and CaCO3 is also 1:1) 7. Convert moles Ca ions to mass using the AMU of Ca (from periodic table) 8. divide the mass of Ca ions in step 7 by the mass of the sample used in step 1 to establish the ratio of Ca in the CaCO3 sample and ply by to get the % composition which is your purity %.