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1) Predict the product in the combination reaction below.
Al (s) + N2 (g) → ________
A) AlN
B) Al3N
C) AlN2
D) Al3N2
E) AlN3
2) The nucleus of an atom does not contain ________.
A) protons
B) protons or neutrons
C) neutrons
D) subatomic particles
E) electrons
3) Of the following gases, ________ has density of 0.906 g/L at 315 K and 1.16 atm.
A) Ne
B) Ar
C) Kr
D) Xe
E) He
4) Which combination will produce a precipitate?
A) Pb(NO3)2 (aq) and HCl (aq)
B) Cu(NO3)2 (aq) and KC2H3O2 (aq)
C) KOH (aq) and HNO3 (aq)
D) AgC2H3O2 (aq) and HC2H3O2 (aq)
E) NaOH (aq) and Sr(NO3)2 (aq)
5) Which element is solid at room temperature?
A) Cl2
B) F2
C) Br2
D) I2
E) H2
6) A sample of gas (1.9 mol) is in a flask at 21 °C and 697 mm Hg. The flask is opened
and more gas is added to the flask. The new pressure is 841 mm Hg and the temperature
is now 26 °C. There are now ________ mol of gas in the flask.
A) 1.6
B) 2.3
C) 2.9
D) 3.5
E) 0.28
7) In the following chemical equation
PCl3 + 3H2O -->
the products (when the equation is balanced) are ________.
A) H3PO3 + 3HCl
B) P(OH)3 + 3HCl
C) H(ClO)3 + PH3
D) HPCl2 + Cl(OH)3
E) PO3 + 3HCl
8) The electron configuration of the sulfide ion (S2-) is ________.
A) [Ne]3s2
B) [Ne]3s23p1
C) [Ne]3s23p4
D) [Ne]3p2
E) [Ne]3s23p6
9) Sulfur and fluorine react in a combination reaction to produce sulfur hexafluoride:
S (s) + 3F2 (g) → SF6 (g)
The maximum amount of SF6 that can be produced from the reaction of 3.5 g of sulfur
with 4.5 g of fluorine is ________ g.
A) 12
B) 3.2
C) 5.8
D) 16
E) 8.0
10) Which of the following correctly represents the transmutation in which a
curium-242 nucleus is bombarded with an alpha particle to produce a californium-245
nucleus?
A) Cm( He, n) Cf
B) Cm( He, p) Cf
C) Cm( He, e) Cf
D) Cm( n, He) Cf
E) Cm( He, 2 p) Cf
11) The formula for the compound formed between aluminum ions and phosphate ions
is ________.
A) Al3(PO4)3
B) AlPO4
C) Al(PO4)3
D) Al2(PO4)3
E) AlP
12) Which one of the following polyatomic ions has the same charge as the hydroxide
ion?
A) ammonium
B) carbonate
C) nitrate
D) sulfate
E) phosphate
13) How many moles of lithium phosphate (Li3PO4) are contained in 66.6 g of lithium
phosphate?
A) 0.575
B) 7710
C) 1.11 x 10-22
D) 4.01 x 1025
E) 116
