Assignment 2 - 1 points Select the spectator ions for the...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Question 1 Multiple Choice 1 points How many moles of ions are released when 0.27 mol of cobalt(II) chloride, CoCl 2 , is dissolved in water? 0.27 mol 0.54 mol 0.81 mol 0.090 mol Question 2 Multiple Choice 1 points How many moles of oxygen are there in 10.66g CO 2 ? 4.13 mol 469 mol 0.218 mol 0.484 mol 0.206 mol Question 3 Multiple Choice 1 points What is the percent by mass of oxygen in Sb 4 O 6 ? 14.00 16.47 0.16 0.33 32.93 Question 4 Multiple Choice 1 points A compound has 38.7% Carbon, 9.7% Hydrogen and 51.6% Oxygen. The molecular mass was found to be 62. What is the molecular formula ? C 3 H 6 O 2 C 2 H 6 O 3 C 2 H 6 O 2 C 3 H 5 O 3 CH 3 O Question 5 Multiple Choice 1 points What mass of ammonium chloride must be dissolved in water to prepare 350 mL of 0.260 M NH 4 Cl solution ? 216.0 g 4.87 g 0.5878 g 0.0910 g 39.74 g Question 6 Multiple Choice 1 points What volume of 4.20 M NH 3 solution would be required to prepare 10.0 mL of 0.0160 M NH 3 solution ? 0.0672 mL 262.5 mL 0.00381 mL 0.0381 mL 2.625 mL Question 7 Multiple Choice
Background image of page 1

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

View Full DocumentRight Arrow Icon
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 1 points Select the spectator ions for the following reaction. AgNO 3 ( aq ) + NaCl( aq )→ AgCl( s ) + NaNO 3 ( aq ) Ag + ( aq ), NO 3-( aq ) Na + ( aq ), NO 3-( aq ) Na + ( aq ), Cl-( aq ) Ag + ( aq ), Cl-( aq ) Question 8 Multiple Choice 1 points What is the coefficient of CH 4 when the following equation is properly balanced with smallest set of whole numbers? ___ Al 4 C 3 + ___ H 2 O → ___ Al(OH) 3 + ___ CH 4 3 6 4 24 12 Question 9 Multiple Choice 1 points What is the theoretical yield of vanadium, in moles, that can be produced by the reaction of 2.0 mole of V 2 O 5 with 6.0 mole of calcium, based on the following chemical reaction? V 2 O 5 (s) + 5Ca(l) → 2V(l) + 5CaO(s) 2.4 mol 2.0 mol 1.6 mol 1.0 mol 4.0 mol Question 10 Multiple Choice 1 points If Hg and 1.50g O 2 are obtained from heating 56.0g HgO, what is the mass percent yield of O 2 ? Hint work out the stoichiometry of the reaction first 18.13 36.26 72.52 9.07 30.90...
View Full Document

This note was uploaded on 10/16/2009 for the course CHM 104 taught by Professor Igor during the Three '09 term at Charles Sturt University.

Page1 / 2

Assignment 2 - 1 points Select the spectator ions for the...

This preview shows document pages 1 - 2. Sign up to view the full document.

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