Chemistry Final

Topics: Trigraph, Chlorine, Oxide Pages: 4 (404 words) Published: April 7, 2014
1) How many hydrogen atoms are represented in the formula (CH3)2CH2? 1) _______
A) 8 B) 6 C) 9 D) 5

2) Which has the highest percent mass of Cl? 2) _______

A) C2Cl6 B) CCl4 C) C2Cl4 D) C2Cl2

3) The correct formula for Sodium Nitride is: 3) _______

A) Na3N B) NaNO2 C) NaNO3 D) Na2NO3

4) How many moles of NO3 are there in 6.2g? 4) _______

A) 0.05 B) 10 C) 0.10 D) 384

5) Consider the following equation:

4NH4 + 5O2 → 4 NO + 6H2O

How many moles of water are produced when 2 moles of NH4 react with excess Oxygen gas?
5) _______

A) 6 B) 3 C) 4 D) 5

6) When the following equation is balanced what is the smallest whole number coefficient for Ca2 +?

Ca2 + + PO4
3 + → Ca2(PO4)2

6) _______
A) 4 B) 1 C) 3 D) 2

7) Which molecule contains a bent geometry? 7) _______

A) HF B) OF2 C) CO3
2 + D) SiO2

8) Which element has properties most similar to Bromine? 8) _______
A) F B) Kr C) S D) Se

9) Which of the following has the most electrons? 9) _______
A) Sr2 + B) Rb C) Cl - D) Kr
10) Which bond is most polar? 10) ______

A) N -H B) C -H C) O -H D) H -H

11) Which of the following is not a metal? 11) ______

A) Ca B) Se C) Zn D) Mn

12) Which of the following has tetrahedral geometry? 12) ______
A) PCl3 B) H2O C) CF4 D) BCl3

13) Which has the smallest radius? 13) ______

A) Li + B) Li - C) Li D) Li2-

14) What is the most likely formula for a compound consisting of Sr and Se? 14) ______
A) SrSe3 B) Sr2Se C) SrSe D) SrSe2

15) How many “dots” would be around the central atom in the Lewis structure of S? 15) ______
A) 5 B) 6 C) 7 D) 4

16) What volume of a 12.0 M HCl solution is needed to provide 0.6 mol of HCl? 16) ______
A) 12 mL B) 50 mL C) 5 mL D) 50 mL

17) Which is the strongest acid in aqueous solution? 17) ______
A) CH4 B) HNO2 C) KCl D) NH3

18) KCl is soluble in water but not in toluene this is because...
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