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Allotropes and Isotopes

mmsphyschem by mmsphyschem
14.01.2022
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Table of Contents

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  • Allotropes and also Isotopes

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Allotropes and also Isotopes

1

) Which of the complying with is(are) allotropes of oxygen?

(a) O-17

(b) ozone

(c) dioxygen (O2)

(d) water

(e) air

2

) Chlorine has 2 normally happening isotopes, 35Cl and also 37Cl, with masses of 34.9689 u as well as 36.9659 u, specifically. Compute the wealths of these isotopes.

(a) 50.0%/ 50.0%

(b) 75.8%/ 24.2%

(c) 90.2%/ 9.8%

(d) 20.6%/ 79.4%

(e) 68.3%/ 31.7%

3

) Which of the adhering to is(are) allotrope of oxygen?

(a) graphite

(b) C-13

(c) carbon tetrachloride

(d) ruby

(e) buckminsterfullerene (bucky rounds)

4

) Bromine has 2 normally taking place isotopes, 79Br and also 81Br, with masses of 78.9183 u as well as 80.9163 u, specifically. Compute the wealths of these isotopes.

(a) 32.6%/ 67.4%

(b) 74.5%/ 25.5%

(c) 29.3%/ 70.7%

(d) 50.7%/ 49.3%

(e) 38.2%/ 61.8%

5

) Which of the complying with is(are) allotrope of phosphorus?

(a) P-31

(b) white phosphorus

(c) red phosphorus

(d) phosphorus pentachloride

(e) black phosphorus

6

) Silver has 2 normally taking place isotopes, 107Ag and also 109Ag, with masses of 106.9051 u and also 108.9048 u, specifically. Compute the wealths of these 2 isotopes.

(a) 32.8%/ 67.2%

(b) 51.8%/ 48.2%

(c) 20.6%/ 79.4%

(d) 64.7%/ 35.3%

(e) 82.5%/ 17.5%

7

) Which of the complying with is(are) allotrope of sulfur?

(a) sulfur dioxide

(b) yellow sulfur

(c) S-34

(d) sulfuric acid

(e) sulfur monoxide

8

) Suppose you are attempting to create a table of elements in an identical world. You uncover component “X”, which has 2 isotopes. Isotope # 1 has a mass of 39.96 u and also a wealth of 74.2%. Isotope # 2 has a mass of 40.96 u. What atomic mass would certainly you place on the table of elements for aspect “X”?

(a) 40.22

(b) 40.46

(c) 39.96

(d) 40.96

(e) 70.61

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