104_F09_E2a - CHM104 Fall2009 Exam#2 FormA MULTIPLECHOICE....

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

View Full Document Right Arrow Icon
CHM104 Fall 2009 Exam #2 Form A MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) What would be the new pressure if a 400 mL gas sample at 380 mm Hg is expanded to 800 mL with no change in temperature? A) 950 mm Hg B) 190 mm Hg C) 380 mm Hg D) 570 mm Hg E) 760 mm Hg 1) 2) A 250. mL sample of gas at 1.00 atm and 20.0°C has the temperature increased to 40.0°C and the volume increased to 500. mL. What is the new pressure? A) 0.468 atm B) 2.14 atm C) 1.87 atm D) 0.534 atm E) 0.374 atm 2) 3) How many moles of gas are present in a 10.0 liter sample at STP? A) 22.4 moles B) 2.24 moles C) 224 moles D) 0.446 moles E) 10.0 moles 3) 4) For the following reaction, if 11.2 L of nitrogen are reacted to form NH 3 at STP, How many liters of hydrogen will be required to completely consume all of the nitrogen? N 2 + 3H 2 2NH 3 A) 11.2 L B) 7.4 L C) 33.6 L D) 16.8 L E) 6.1 L 4) 5) How many grams of N 2 are contained in an 11.2 liter sample at STP? A) 11.2 B) 7.00 C) 14.0 D) 6.02 × 10 23 E) 28.0 5) 6) What volume will be occupied by 8.00 g of oxygen, O 2 , at STP? A) 22.4 L B) 13.4 L C) 4.00 L D) 11.2 L E) 5.60 L 6) 7) What is the total pressure of a mixture of He and H 2 if the partial pressures are 320 mm Hg and 800 mm Hg respectively? A) 40 mm Hg B) 1120 mm Hg C) 480 mm Hg D) 60 mm Hg E) 320 mm Hg 7) 1
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
8) Which homogeneous mixture is opaque and has particles large enough to be filtered? A) solution B) colloid C) suspension D) both colloids and suspensions E) none of the above 8) 9) Consider the following four liquids: 1. water : highly polar; H - bonding 2. hexanol : slightly polar; some H - bonding 3. chloroform : slightly polar; no H - bonding 4. octane : non - polar; no H - bonding Which pair of liquids is immiscible ? A) chloroform and octane B) water and octane C) water and hexanol D) hexanol and chloroform E) none of the above 9) 10) In general, the solubility of ________ in water decreases as temperature increases.
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 / 7

104_F09_E2a - CHM104 Fall2009 Exam#2 FormA MULTIPLECHOICE....

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