A 5.276 g sample of Al-Mg alloy is digested in nitric acid (to Al*3 and Mg"). The solution is diluted to 500.00 mL and three 100.00 mL aliquots are treated with ammonia, the resulting Al(OH)3 precipitate is dried and then ignited to alumina, Al2O3 (MM = 101.961 g/mol). If the average mass of alumina obtained was 1.444 g, what was the percentage of aluminum (MM = 26.9815 g/mol) in the original sample?

A 5.276 g sample of Al-Mg alloy is digested in nitric acid (to Al*3 and Mg"). The solution is diluted to 500.00 mL and three 100.00 mL aliquots are treated with ammonia, the resulting Al(OH)3 precipitate is dried and then ignited to alumina, Al2O3 (MM = 101.961 g/mol). If the average mass of alumina obtained was 1.444 g, what was the percentage of aluminum (MM = 26.9815 g/mol) in the original sample?

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...

See similar textbooks

Similar questions

8
Give detailed Solution ....show work..don't give Handwritten answer..don't use Ai for answering this
p) 1. BH, THF 2. HO, H₂O₂ 3. PCC
A compound containing uranium and fluorine with mass 1.760 g wastreated with excess calcium nitrate to precipitate all of the fluorine. The precipitate of CaF2 had a mass of1.170 g. What is the experimental percent by mass of fluorine in the original uranium sample?
1. NaH 2. CH3I OH
9. How many kilograms of iron can be obtained from 635 pounds of an ore that is 72.0% hematite, Fe,O,?
Consider the reaction 3X + 2Y – 5C + 4D With excess Y, how many moles of X are needed to produce 27.00 moles of D?
galena a mineral of lead is a compound of the metal with sulfer. Analysis shows that a 17.74 g sample of galena contains 2.39 g of sulfer a.) Calculate Mass of lead b.)Mass Fractions of lead and sulfer in galena. Calculate to three significant figures mass fraction of Pb: Mass fraction of S: c.) Mass percents of lead and sulfer in galena. Calculate to three significant figures Mass % of Pb: Mass % of S:
AP United States istory: Ba Edgenuity for Students C Cever Portal 3 of 7 Automatic Zoom %23 5. Examine the activity series of metals in this table. Name Symbol Lithium Li Decreasing reactivity 1. Barium Ва Strontium Sr Calcium Ca Magnesium Zinc Mg Zn Iron Fe Based on the activity series, which metal could X represent in the reaction below? X(s) + Ca(NO; )2 (ag)- Ca(s)+X(NO; ) (ag) Ba b. Fe с. Mg d. Zn a. What honnonc whon a oham :1:1i.
Please don't provide handwritten solution .....
OCH3 OCH 1. NaOCH, 2. H₂O*
An engineer has filed for a patent for a brand new allot to be used in golf club heads. The composition by mass ranges from 25 to 31% manganese, 6.3 to 7.8% aluminum , 0.65 to 0.85% carbon, and 5.5 to 9.0% chromium, with the remainder be8ng iron. What are the minimum and maximum percentages of irom possible in this alloy?