used counting by weighing in this experiment though it would have been just as t

Question

used counting by weighing in this experiment though it would have been just as though it woud 2. We used counting by weighing in this experiment easy to count the pennies. In real life, when would we count by weighing? HEN TteRE aRE oe PENNIES THaN YOU CaN NOT COUNT 3. Copper has two isotopes, aCu and sCu. If Cu accoun opes, 63Cu and 65Cu. Ipacu accounts for 72.7% of the copper, what is the average mass of an average copper atom? (Use 63.00 and 65.00 as the masses of the isotopes.) 4. If you reached into a pile of copper and pulled out a single atom, would it have the mass calculated above? Explain. 5. Zirconium has two isotopes, 9oZr and s'Zr. If the mass of zirconium is 91.224g/mol, what is the percentage of each isotope in naturally occurring zirconium? (Use 90.00 and 93.00 as the masses of the isotopes.) (90.00 )-(93.00 (1-2)= q1.z9 q3cR10.80. qOcR=54207, 69 4 ISOTOPES AND THE MOLE REPORT FORM

Explanation / Answer

3. For calculate average mass, multiplying the ratio of abundance (in decimal form) by the mass of each atom. Then the sum of the results will be the average mass of the atom in question.

63Cu= 0,727 x 63=45,801

65Cu=0,273 x 65=17,745

Cu(average mass)= 45,801 + 17,745= 63,546

4. No, the atom will have a mass of 63 or 65. The average calculated takes into account the contribution of each type of copper according to its abundance. but, will be greater the probability that the isolated atom has a mass of 63.

FOR ANSWER OF DISCUSSION AND CONCLUSION PART IS NECESSARY YOU UPLOAD THE EXPERIMENT.

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