2009F_chem-125exam144gt60xx3without-answers

2009F_chem-125exam144gt60xx3without-answers - Chem 125...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Chem 125 Exam #1 Fall 2009 Ellis PART A. (4 Points each) 1. 3A + 7B 2C + D. How many moles of B are required to react completely with 0.27 moles of A? a. 0.54 b. 0.57 c. 0.60 d. 0.63 e. 0.12 2. 2.0 g of a gasoline with a density of 0.68 g/cm 3 spills on a pond. It spreads out on the surface to form a layer 1500 angstroms thick. What is the area of the gasoline in square meters? (An angstroms is 10 -10 m.) a. 2.0 x10 5 b. 20. c. 110,000 d. 11 e. 1,100 3. What is the correct formula of zinc hydroxide? a. ZnOH b. Zn 2 OH c. Zn(OH) 2 d. ZnOH 2 e. ZnO 2 H 4. What is the correct name of P 2 S 5 ? a. phosphorus sulfide b. phosphorus sulfite c. diphosphorus pentasulfide d. phosphorus (V) sulfide e. none of the above 5. What is the correct formula for ammonium sulfate? a. (NH 4 ) 2 SO 4 b. NH 4 SO 4 c. (NH 4 ) 3 (SO 4 ) 2 d. (NH 4 ) 2 (SO 4 ) 3 e. NH 4 (SO 4 ) 2 6. What is the oxidation state of oxygen in LiO 2 ? a. 0 b. c. -1 d. -2 e. 2 +
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Chem 125 Exam #1 Fall 2009 Ellis 7. If the following equation were balanced using the smallest possible integral coefficients, what would be the coefficient for water? C
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 6

2009F_chem-125exam144gt60xx3without-answers - Chem 125...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online