Suppose a student repeats Experiment I using an unknown metal instead of magnesium. The unknown metal reacts similarly tomagnesium. The student adds 6.60 g of the unknown metal to a crucible that has a mass of 35.00 g. The crucible and itscontents are heated over a Bunsen burner for several minutes. The mass of the crucible and its contents after heating is 43.26 g.Identify the unknown metal based on the results of the experiment. Assume all of the unknown metal reacts.OznOCaNiStCuWrite the balanced chemical equation for this reaction. Include physical states.balanced equation:

Answered: Image /qna-images/answer/839d6b38-7b27-4b7f-b3e7-adebc9d4bc8b.jpg

Answered: Suppose a student repeats Experiment I…

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter8: The Periodic Table: Structure And Trends

Section: Chapter Questions

Problem 8.83QE

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What do we call reactions in which electrons are transferred between atoms or ions? What do we call a loss of electrons by an atom or ion? What is it called when an atom or ion gains electrons? Can we have a process in which electrons are lost by one species without there also being a process in which the electrons are gained by another species? Why? Give three examples of equations in which there is a transfer of electrons between a metallic element and a nonmetallic element. In your examples, identify which species loses electrons and which species gains electrons.
What are the two most abundant elements by mass in the earths crust, oceans, and atmosphere? Does this make sense? Why? What are the four most abundant elements by mass in the human body? Does this make sense? Why?
What evidence led to the conclusion that cathode rays had a negative charge?
A cylindrical piece of pure copper (d=8.92g/cm2) has diameter 1.15 cm and height 4.00 inches. How many atoms are in that cylinder? (Note: the volume of a right circular cylinder of radius r and height h is V=r2 h .)
In 1774, C. Scheele obtained a gas by reacting pyrolusite (MnO2) with sulfuric acid. The gas, which had been obtained that same year by Joseph Priestley by a different method, was an element, A. (a) What is the element isolated by Scheele and Priestley? (b) Element A combines with almost all other elements. For example, with cesium it gives a compound in which the mass percent of A is 19.39%. The element combines with hydrogen to give a compound with a mass percent of element A of 94.12%. Determine the formulas of the cesium and hydrogen compounds. (c) The compounds of cesium and hydrogen with element A react with one another. Write a balanced equation for the reaction.

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