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- Course
- Topics In General Chemistry
- Institution
- University Of Windsor (U Of W )
Exam of 8 pages for the course Topics In General Chemistry at U of W
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AVOGADRO EXAM 2011UNIVERSITY OF WATERLOO
DEPARTMENT OF CHEMISTRY
19 MAY 2011 TIME: 75 MINUTES
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2. Print your school name and city on your STUDENT 4. Print your name (last name, first name and optional
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sheet, one of the following CODE numbers:
5. Carefully detach the last page. It is the datasheet.
Code 1 Ontario, now studying Grade 11 Chemistry
in a nonsemestered school
Code 2 Ontario, now studying Grade 11 Chemistry 6. Now answer the exam questions. Questions are not in
order of difficulty. Indicate your choice on the
in a semestered school
STUDENT RESPONSE sheet by marking one letter
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Code 12 Teacher
Carefully detach the last page.
It is the Data Sheet.
, 1 Iodine-131 is a radioactive isotope used to treat 5 A student prepared the following graph to illustrate
hyperthyroidism (an overactive thyroid gland) and one aspect of ideal gas behaviour. However, he forgot
thyroid cancer. How many protons, neutrons and to label the axes.
electrons are there in a single atom of iodine-131?
A 131 protons, 131 neutrons, 131 electrons
B 53 protons, 78 neutrons, 53 electrons
C 78 protons, 53 neutrons, 78 electrons
D 53 protons, 131 neutrons, 53 electrons Which of the following graphs could it be?
Note: In the responses below, the symbols have their
E 78 protons, 131 neutrons, 78 electrons
usual meanings: P is pressure; V is volume; T is kelvin
temperature; n is amount in moles.
2 Data are given below for the hypothetical element
A P versus T, with n and V held constant
avogadrium, symbol Av. What is the average atomic
weight of avogadrium?
B T versus n, with P and V held constant
Relative Fractional
C PV versus T, with n held constant
Isotope weight abundance
Av-58 58.017 u 36.02% D P versus V, with n and T held constant
Av-60 60.154 u 63.98%
E PV/T versus P, with n held constant
A 58.79 u
B 59.09 u
6 Which substance, in the solid state, is likely to have
C 58.55 u the following characteristics: hard; brittle; soluble in
water; high melting point?
D 59.38 u
E 59.62 u A Cl2
B RbCl
3 Which of the following equations is not correct? C C(diamond)
A H2(g) → 2 H(g) + energy D Cu
− −
B Na(g) + e → Na (g) + energy
− E IBr
Mg(g) + energy → Mg (g) + 2e
2+
C
D Cu(s) + energy → Cu(l)
− 7 The mass of a sample is measured as 0.03050 g. How
Na (g) + Cl (g) → NaCl(s) + energy
+
E many significant figures are there in this quantity?
A two
4 How many electron pairs are there around the S atom
−
in the SF3 ion? B three
A three bonding pairs
C four
B three bonding pairs and one unshared pair
D five
C three bonding pairs and two unshared pairs
E six
D four bonding pairs and two unshared pairs
E six bonding pairs
2 / AVOGADRO EXAM © 2011 UNIVERSITY OF WATERLOO
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