Number 5 a. The crucible is not brought to constant mass before adding magnesium.b. Water is never added to the crucible.Some of the final product is lost before final weighing.C.d. The crucible is dropped on the way to final weighing and a small chip is lost from thecrucible.4. Was there a greater than 5% difference between the moles of magnesium or moles of oxygenbetween your two samples? If so, during which step of this experiment could this differencehave arisen? Hint: Your answer to question 3 may be helpful for this.5. A karat is a measure of gold purity. By definition, 24-karat gold is pure gold. However, goldis often combined with other metals to increase hardness or adjust color. "White" gold canbe formulated in a number of ways, but a standard recipe contains about 90% (by weight)gold and 10% (by weight) nickel. If you have a white gold ring made using this formulation,which weighs 6 g, how many moles of gold are in your ring?Onceyouhave completed your data analysis:hp

5) Given: Mass of ring = 6 g. And mass percent of gold in ring = 90 %.

A karat is a measure of gold purity. By definition, 24-karat gold is pure gold. However, gold is often combined with other metals to increase hardness or adjust color. "White" gold can be formulated in a number of ways, but a standard recipe contains about 90% (by weight) gold and 10% (by weight) nickel. If you have a white gold ring made using this formulation, which weighs 6 g, how many moles of gold are in your ring?

A karat is a measure of gold purity. By definition, 24-karat gold is pure gold. However, gold is often combined with other metals to increase hardness or adjust color. "White" gold can be formulated in a number of ways, but a standard recipe contains about 90% (by weight) gold and 10% (by weight) nickel. If you have a white gold ring made using this formulation, which weighs 6 g, how many moles of gold are in your ring?

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter9: Chemical Quantities

Section: Chapter Questions

Problem 36QAP

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