Chem 1311 - Study guides, Class notes & Summaries

CHEM 1311 Test 1 Detailed Questions And Expert Answers

CHEM 1311 Exam 1 Questions With Complete Solutions

CHEM 1311 Exam Detailed Questions And Expert Answers

Chem 1311 Final Exam Detailed Questions and Expert Answers

Of the following only,_________ is an extensive property. -Temperature -Boiling point -Freezing point -Density -Volume correct answer: Volume In the following list, only __________ is not an example of a chemical reaction. -the production of hydrogen gas from water -chopping a log into sawdust -the tarnishing of a copper penny -burning a plastic water bottle -charging a cellular phone correct answer: chopping a log into sawdust In which of the following numbers ar...

Chem 1311 Exam 1 Questions With Complete Solutions

Propane (C₃H₈) reacts with oxygen in the air to produce carbon dioxide and water. In a particular experiment, 38.0g of Carbon Dioxide are produced from the reaction 22.05g of propane with excess oxygen. What is the % yield in this reaction? -94.5 -66.0 -86.4 -38.0 -57.6 correct answer: 57.6 Gaseous argon has a density of 1.40 g/L at standard conditions. How many argon atoms are in 1.00L of argon gas at standard conditions? -4.76x10²² -6.02x10²³ -3.43x10²⁵ -1.59...

A __________ ΔH corresponds to an __________ process. -zero, endothermic -positive, exothermic -negative, endothermic -zero, exothermic -positive, endothermic correct answer: positive, endothermic Which one of the following is NOT considered a fossil fuel? -natural gas -hydrogen -anthracite coal -petroleum -crude oil correct answer: hydrogen Which one of the following statements is FALSE? -The enthalpy change for a reaction is equal in magnitude, but opposite i...

According to VSEPR theory, if there are 2 electron domains on a central atom, they will be arranged such that the angles between the domains are __________. -120° -180° -90° -109.5° -360° correct answer: 180° An electron domain consists of __________. a) a nonbonding pair of electrons b) a single bond c) a multiple bond -a only -b only -c only -a, b, and c -b and c correct answer: a, b, and c The O-C-O bond angle in the CO₃²⁻ ion is approximately ______...

The Greeks correct answer: tried to explain chemical changes, proposed four fundamental substances (earth, fire, water, air), first proposed atoms as fundamental particles The Alchemists correct answer: "pseudoscience"/tried to change a base metal of lead into gold Robert Boyle correct answer: First "chemist"/quantitative measurements on gases/proposed the concept of elements Joseph Priestly correct answer: discovered oxygen/carefully studied chemical reactions Law of Mass Co...