_refers to the formation of a new, insoluble product by a chemical reaction; this product then precipitates out of the reaction 51. solution as an amorphous solid containing many trapped impurities. * Sublimation Crystallization Recrystallization O other:

_refers to the formation of a new, insoluble product by a chemical reaction; this product then precipitates out of the reaction 51. solution as an amorphous solid containing many trapped impurities. * Sublimation Crystallization Recrystallization O other:

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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when an acid is added to sodium bicarbonate gas is formed. when dry ice sublimes, gas is formed. one process is chemical and the other is physicsl. Explain.
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Does PbCl2 and Agl not form a PbI2(s) precipitate? It is also a double replacement reaction right?
A student weighs out 0.213 g MgCl2·H2O (Mw = 131.235 g mol-1) of and 0.167 g of NaOH (Mw = 39.997 g mol-1 ) and dissolves both these in DI water to make up two separate solution. What are the mole amounts of both these reagents and which is the limiting reagent?
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.2500 moles of dissolved silver nitrate is mixed with .2500 moles of dissolved sodium carbonate to make silver carbonate. what is the theoretical mass of the precipitate?
What happens if a solute is added to a saturated solution? A) Nothing will happen, solute will not mix with a saturated solution. B) The added solute provides a template for the solid to begin to crystallize from solution, and a precipitate will form. C) The added solute makes the solution less saturated. D) The added solute provides a template for the gas to begin to boil from solution, and a gas will form. Why is A false?
ZOOM + 1. Calculate the molar mass of the following compounds. a. magnesium phosphate b. sodium sulfide c. dinitrogen tetroxide 2. Determine the molar mass of these ceramic materials. а. HfN b. ThO2 с. ВаTiO; 3. A chemist needs exactly 2 moles of NAOH to make a solution. What mass of NaOH must be used? 4. What mass of ozone (O3) gives 4.5 moles of the substance?5 5. Calculate the mass in the grams of each the following. a. 2.5 mol of aluminum b. 1.25×10-3 mol of iron c. 0.015 mol of calcium d. 653 mol of neon 6. Calculate the mass in grams of 13.5 mol of a. vinyl chloride, C,H3CI, the starting material for a plastic b. capsaicin, C13H27NO3, the substance that makes red chili peppers "hot" c. stearic acid, C13H36O2, used in soaps 7. How many moles are present in the given quantities of explosives? a. 358.1 g trinitrotoluene (TNT), C,H;N;O6 b. 82.6 g nitromethane, CH3NO2 c. 1.68 kg RDX, C;H,N,O6 8. How many H atoms are present in 7.52 g of propane, C3H3? 9. How many O atoms are present…
25. An indlcation of the average formula weight of a fat is its saponification number, expressed asthe mlligrams KOH requlred to hydrolyze (saponify) 1 g of the fat: CH,CO,R CH,OH CHCO,R + 3KOH → CHOH + 3RCO,K CH;CO,R CH,OH where R can be variable. A 1.10-g sample of butter is treated with 25.0 mL of 0.250 M KOH solution. After the saponification is complete, the unreacted KOH is back-titrated with O.250 M HCI, requiring 9.26 mL. What is the saponification number of the fat and what is its average formula weight (assuming the butter is all fat)?
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