CHEM 1211 Module Six Exam Name: ________________

Module Six: Part M: Multiple Choice Chapter 12

_____1. Which of the following is equal to one mole of substance?

(A) 6.02 x 10²³ sodium atoms, Na

(B) 6.02 x 10²³ chlorine molecules, Cl₂

(C) 6.02 x 10²³ sodium chloride formula units, NaCl

(D) 6.02 x 10²³ chloride ions, Cl^1-

(E) all of the above

_____2. What is the molar mass of trinitrotoluene (TNT) C₇H₅(NO₂)₃

(A) 183.0 g/mol

(B) 199.0 g/mol

(C) 227.0 g/mol

(D) 368.0 g/mol

(E) 405.0 g/mol

(F) none of these

_____3. What is the mass of 4.50 x 10²² atoms of gold, Au?

(A) 0.0679 g

(B) 0.0748 g

(C) 13.3 g

(D) 14.7 g

(E) 197 g

_____ 4. What is the term that expresses the actual number of atoms present in one molecule of a compound?

(A) actual formula

(B) chemical formula

(C) empirical formula

(D) molecular formula

(E) none of the above

______5. What are standard conditions of temperature and pressure?

(A) 0^oC and 0 atmosphere

(B) 0^oC and 1 atmosphere

(C) 0 K and 1 atmosphere

(D) 273^oC and 1 atmosphere

(E) 273 K and 0 atmosphere

_____6, Which of the following is NOT evidence for a chemical reaction?

(A) change in physical state

(B) change in odor

(C) change in color

(D) heat is produced

(E) all of the above

_____7, Which