Consider the known solution of nickel spotted on your chromatogram. Assume you spot- ted 0.050 mL of this solution and the solution has a concentration of 0.15 M i.e., it contains 0.15 moles liter of solution How many grams of nickel are spotted and detected? MM of nickel = 58.7 g/mol
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- What type of chemical analysis would you use for the following? 1. 500 milligrams of ascorbic acid in vit. C 2. determination of sodium, glucose, alkaline phosphate, and others in a blood analysis 3. four percent calcium and two percent iron is found in an analysis of pineapple juice [Spectroscopy, gravimetric analysis, volumetric analysis, electroanalytical methods, OR chromatography]Profiles 202 X sac/10062554#/10062554/7/-1 hment Score: 3 ion 8 of 10 > Macmillan Learning F3 Tab Window Help E Experiment 11 - Per X D tv mass of KBr : mass of water: C 78.8% $ 4 85 A 0.600 m aqueous solution of KBr has a total mass of 88.0 g. What masses of solute and solvent are present? Q F4 R FO % 5 V F5 11_Melton_Keely - x | T 6 34,121 X MacBook Air F6 Y G I H 5 & 7 B N F7 #06 NEW U 8 Resources W M DII F8 1 K X X ( 9 H F9 0 48% Question 8 of Give Up?. L -0 (((( F10 P V 1 I command option Reminders pill Hint 10 F11 a 8 [ ? 1 + 11 Ch }1. How many milliliters of concentrated hydrochloric acid, 38% (wt/wt), specific gravity 1.19, are requiredto prepare 1 L of a 0.100 M solution? Assume density and specific gravity are equal within threesignificant figures. (H-1.008 amu, Cl-35.45 amu) 2. A 0.456-g sample of an ore is analyzed for chromium and found to contain 0.560 mg Cr2O3.Express the concentration of Cr2O3 in the sample as %w/w.
- Is their a true chemistry defeinition of what "percent by volume means?" If so, can it be described as this definition: Volume/volume percentage (v/v percent) is a measure of the concentration of a substance in a solution. It is expressed as the ratio of the volume of the solute to the total volume of the solution multiplied by 100.5) If all the NaHCO3 in bag 2 reacted, calculate the number of moles of gas produced? tates) E FocusA chemist measured the concentration of a solution three times and obtained the following results (in mol/L): 0.0147, 0.0146, 0.0148. Do the results appear precise, accurate, or neither? Explain. avenge =.0147 (pdimus.co 120 Doy Jine What information would you need for the results to be both precise and accurate? If the true value is 0.0149, calculate the percent error.
- 3. Calculate the normality when 7.88g of Ca(NO3)2 was dissolved in 3 lite solution ANSWER: NORMALITY=During dilution process, what do you do if you add a bit too much solvent when filling the volumetric flask to the mark? O Calculate the equivalent amount of salt and add that to the solution O Remove the excess content of the flask until the volume matches the calibration mark O Start over, the solution cannot be saved OUse a distillation unit to evaporate the excess solventMla pnc.com/women Mail - Whi x O Grades for x Course Ho X G oxide cont X G Exercise 4.x E 4 - Molecu x O Bananas a X 1.84 x 10- x + envellum.ecollege.com/course.html?courseld 16985674&OpenVellumHMAC=a0b841caaee7feddab1623a6c83a92c0#10001 Review | Constants I Periodic Table Percent composition refers to the mass percent of each element in a compound: mass of element Part A mass percent = x 100% mass of compound > For example, the percent composition of water, H2O. is 11.2% hydrogen and 88.8% oxygen. Therefore, a 100-g sample of water contains 11.2 g of hydrogen atoms and 88.8 g of oxygen atoms. A hydrocarbon is a compound that contains mostly carbon and hydrogen. Calculate the percent composition (by mass) of the following hydrocarbon: CH22 Enter the percentages of carbon and hydrogen numerically to four significant figures, separated by commas. The periodic table will be useful when doing this problem. You can access a periodic table by clicking the "Tools" link in the upper right…
- An individual combined 1.397 g 4-aminophenol with 2.9 mL acetic anhydride. A mass of 1.302 g pure and dry acetaminophen was obtained. What was this individuals percent yield? Report your answer to two decimal places.drc%3D0&gi=24758088ctgl=18dnb 06 What is the molarity of a solution prepared by dissolving 213.6 grams of Fe(OH)3 in enough water to produce a total volume of 1.5 L? Round your answer to 1 decimal place. Your Answer: Answer units D Add attachments to support your work09 Email M Gmail ||| esc YouTube Maps MyCSU - Columbus... B Homepage - Georg... W Microsoft Of O STATES OF MATTER Calculating mass percent composition V A chemist mixes 6.61 g of chloroform with 3.79 g of heptane and 74.2 g of acetyl bromide. Calculate the percent by mass of each component of this solution. Be sure each of your answer entries has the correct number of significant digits. component mass percent x10 chloroform % X 5 ? heptane acetyl bromide a Explanation Check Type here to search f2 7 ? 2 f3 # 0 0 % 3 % LA 4. (5 100 % LO mifera 5 6 8 hp