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
Residence Online Assignments
 Leave a ReplyRecommendedDon't miss it
Whatever you need, mmsphyschem is here to provide you with the most updated news and updates worldwide. Visit our site and get notified for more! 
|
