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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