please write together with its units. SOLVE PART D ONLY Q12. Determinea) what is the total number of atoms in 690.7 g of Pbb) the number of moles of Si in a 312 g of samplec) the mass of three trillion-atom (3.0x101²) sample of metallic goldd) how many 40K atoms are present in a piece of copper block weighing 615 g? Thepercent isotope abundance of 40K is 12.05%?

12. d) The mass of the copper block is = 615 g The percent of 40K isotope is = 12.05 % The number of…

Answered: d) how many 4°K atoms are present in a…

d) how many 4°K atoms are present in a piece of copper block weighing 615 g? The percent isotope abundance of 4°K is 12.05%?

Chemistry In Focus

7th Edition

ISBN:9781337399692

Author:Tro, Nivaldo J.

Publisher:Tro, Nivaldo J.

Chapter3: Atoms And Elements

Section: Chapter Questions

Problem 6E

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Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.

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please write together with its units.

SOLVE PART D ONLY

Q12. Determine
a) what is the total number of atoms in 690.7 g of Pb
b) the number of moles of Si in a 312 g of sample
c) the mass of three trillion-atom (3.0x101²) sample of metallic gold
d) how many 40K atoms are present in a piece of copper block weighing 615 g? The
percent isotope abundance of 40K is 12.05%?

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