Chem 1010 - General Chemistry 1 » Fall 2021 » Chapter 2 Chemical Compounds (2)

Need help with your exam preparation?

Existing Quiz Clients Login here
Question #1
Which of these statements is true about electrons?
A.   Electrons have the same mass as the proton.
B.   Electrons have a positive charge.
C.   Electrons are found in the region surrounding the nucleus.
D.   Electrons are found in the nucleus.
Question #2
Which one of these designations is appropriate for an atom of nitrogen that has seven protons and seven neutrons ?
A.   14N 7
B.   7N 7
C.   15N 7
D.   7N 14
Question #3
How many neutrons are in the nucleus of 29Si?
A.   16
B.   29
C.   14
D.   15
Question #4
The element Erbium, Er, has five abundant isotopes 164Er, 166Er, 167Er, 168Er, and 170Er. The difference among these five isotopes is the ______.
A.   charge in each proton
B.   number of atoms in one mole
C.   number of neutrons
D.   charge on each electron
E.   total charge
Question #5
What is the most common charge observed for the ion of selenium?
A.   -2
B.   -1
C.   1
D.   -3
Question #6
What is the correct name for CO32-?
A.   Carbonite
B.   Carbon oxide
C.   Carbon trioxide
D.   Carbonate
Question #7
What is the correct formula for potassium hydroxide?
A.   K(OH)2
B.   P(OH)3
C.   KHSO4
D.   KOH
Question #8
What is the name for the ionic compound CrBr3?
A.   Copper(III) bromide
B.   Chromium tribromide
C.   Chromium bromide
D.   Chromium(III) bromide
Question #9
Which compound will yield an aqueous solution that conducts electricity?
A.   SCl4
B.   Na3PO4
C.   C2H6O
D.   N2O4
Question #10
What is the molecular formula for phosphine?
A.   P2H4
B.   PH3
C.   NH3
D.   N2H4
Question #11
What is the correct name for SCl4 ?
A.   Sulfur chloride
B.   Disulfur heptachloride
C.   Sulfur tetrachloride
D.   Selenium tetrachloride
Question #12
What is the proper name for C8H18?
A.   Nonane
B.   Decane
C.   Benzene
D.   Octane
Question #13
How many atoms of chlorine are in 0.50 mol CaCl2?
A.   1.7×10-24 atoms
B.   6.0×1023 atoms
C.   3.0×1023 atoms
D.   2 atoms
Question #14
Convert 4.45 mol of ruthenium to grams of ruthenium.
A.   22.7 g
B.   0.0440 g
C.   449.76 g
D.   450 g
Question #15
A typical serving of fresh apple pie contains 208 mg of sodium. How many moles of sodium are contained in this amount of fresh apple pie?
A.   9.05 mol sodium
B.   4.78 × 103 mol sodium
C.   9.05 × 10-3 mol sodium
D.   4.78 × 10-3 mol sodium
Question #16
Calculate the formula percent of oxygen in C6H8O4.
A.   50.0 %
B.   63.0 %
C.   5.61 %
D.   44.4 %

Need help with your exam preparation?

Existing Quiz Clients Login here