8-n= Mole ratio: moles of H2O/Moles of MgSO4 Record this on Line 7 in the Data Table. Initial Mass of Copper Mass of Evaporating Dish Mass of Evaporating Dish and Copper Mass of Recovered Copper: 2.004 g 50.165 g 57.01 g 6.845 g 6- Mass of nH20 (line2- line3) 56.018 g Questions are typically answered in as fast as 30 minutes.*. Evaporating dishes come in varying sizes, although their capacities are usually small. Draw a more stable resonance form for the structure provided. No packages or subscriptions, pay only for the time you need. Br. 56.448 g Start here or give us a call: (312) 646-6365. Which of the following are intermediates in the oxidation of isopropylbenzene to phenol and aceto... Q: Explain why Arctic and Antarctic oceans remain unfrozen even at temperatures below 0 °C. 56.619 g This is preferred because it works much faster and may be used under vacuum, avoiding unwanted reactions with the atmosphere and allowing control of noxious fumes. Mass of evaporating dish + watch glass. Get a free answer to a quick problem. Then mass of NaCl/mass of solution(x100%) = mass % NaCl. Comparison of the initial weight of the substance and that of the fused silica allows the content of silicon in the sample to be determined. Br. A relatively large liquid surface promotes evaporation. (S)-4 Report the mass % of NaCl in this solution.
J.R. S. Carefully decant. 55.312 g 1 A very good 197-lb weight lifter lifted 192 kg in a move called the clean and jerk. Most are made of porcelain or borosilicate glass. OBn answered 07/26/17, Ph.D. in Biochemistry--University Professor--Chemistry Tutor. Removing a solvent from a dissolved substance using an evaporating dish releases the solvent into the air, requiring these procedures to be performed within a closed safety hood if the solvent is a substance other than water. Mass of sample 55.889 g Mass of evaporating dish = 41.36 g Volume of saturated NaCl solution = 10.0 mL Mass of evaporating dish and NaCl = 44.50 g Mass of sodium hydrogen carbonate … A link to the app was sent to your phone. Trial 2 A: Given chemical species is HS- and it is considered to have a Kb value which is the weak base dissoci... Q: The amounts of gold (Au) in the three gold bullion coins are shown below. Average value of n ( as a decimal): Chemical formula of iron(III) carbonate=Fe2(CO3)3. The dish is then closed and heated at high temperature until completely clean, fused silica is produced. Indicate which of the coin... A: 1 mol of Au contains Avogadro's number of atoms. [b] Some used for high-temperature work are of refractory metals, usually of platinum, owing to its non-reactive behaviour and low risk of contamination. Median response time is 34 minutes and may be longer for new subjects. The evaporator is used most often in quantitative analysis. At position 1 in cy... Q: 1) AICI3, PHNET2 Most questions answered within 4 hours.
1 Molecule of iron(III)Carbonate... Q: 5.0 mL of 3.6 M K2CO3 solution is diluted to make a 0.45 M solution, what is the volume of the dilut... A: In the given problem, the volume of the diluted solution can be calculated by using the relation giv... Q: Write the dissociation reaction for HS- knowing that it has a Kb value. To find the mass % of NaCl in solution, one needs to know both the mass of NaCl and the total mass of the solution.
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