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Chem 1011 Final Questions And Answers With Complete Solutions

For the reaction F2(g) ⇌ 2 F(g), the equilibrium constant at 223 °C is 7.3 x 10-13. If a sample of F2 is heated to 223 °C and allowed to reach equilibrium correct answer: nearly all of F2 will remain unreacted, with a very small amount of F present At equilibrium correct answer: the rate of the forward reaction is equal to the rate of the reverse reaction and the concentration of the reactants and products can be very different For the reaction 2 BrCl(g) ⇌ Br2(g) + Cl2(g), the equi...

chem 1011 final Questions With Complete Solution

Which of the following is always true? -Spontaneous changes cause an increase in the entropy of the universe -Heat will flow from a cooler object to a hotter object -Processes that involve an increase in entropy of the system are spontaneous -The change in entropy of the universe is the same as the change in entropy of the surroundings correct answer: Spontaneous changes cause an increase in the entropy of the universe A pure, perfectly crystalline solid at 0 K correct answer: has zero ...

UNE chem 1011 final Questions With Complete Solutions

CHEM 1011 Midterm Questions With Complete Solutions

Representative Elements correct answer: Groups 1, 2, 13-18 The outer e- belongs to 's' or 'p' groups Metals correct answer: Elements that readily lose electrons (form cation), giving them a high heat and electrical conductivity levels, high luster and variety of hardness Nonmetals correct answer: Readily gain e-, do not generally conduct heat/electricity Usually liquids and gases, some soft solids Metalloids correct answer: Elements that may accept or donate electrons readily ...

What are the 3 largest components of our atmosphere? correct answer: Nitrogen - 78% Oxygen - 21% Argon - 1% How is the periodic table arranged? correct answer: By how elements bond What row are the Halogens? correct answer: 7A - Second from the right What row are the Noble Gases? correct answer: 8A - Far right What is unique about the Noble Gases? correct answer: They are stable and don't like to bond What row are the Alkali Metals correct answer: 1A - Far left What ar...

pure substance correct answer: A sample of matter, either a single element or a single compound, that has definite chemical and physical properties Examples of pure substances correct answer: elements, compounds, water, table salt (sodium chloride), ethanol, gold, bronze, etc. Mixture correct answer: A combination of two or more substances that are not chemically combined homogeneous mixture correct answer: A mixture in which substances are evenly distributed throughout the mixture ...

Strong electrolytes: ciate almost completely into ions in solution b. only yield a small fraction of ions in solution c. are always dissolved ionic compound d. Can not be covalent compounds correct answer: a. dissociate almost completely into ions in solution Hexane is commonly used in labs as solvent for non polar compounds. what is the molality of 22.3 mg of vitamin D (C27H44O, 384.6 g/mol) in 50 mL of hexane? Hexane has a density of 0.661 g/mol correct answer: 1.75 X 10^-3 m A...

If you aren't sure how to solve a problem, what can you do? correct answer: Plug in the answers. Rewrite problem. Draw a picture if relevant. Write down any equations that might be used. Like area of a triangle, circumference of a circle, area of a rectangle, etc. What can help you solve tables, charts, and graphs? correct answer: Write down numbers from the graph instead of just keeping the numbers in your head. How do you solve an equation like: 2x² = 10x correct answer: FIRST -...

main idea - the author's central thought; what an author wants to say about a topic topic - overall subject of a text compare (verb) - to find similarities contrast (verb) - to find differences context clue - a word, phrase, or sentence in the text around an unfamiliar word that helps you identify the word's meaning text evidence - evidence from the reading selection that proves the answer to a question about the text author's purpose - the author's intent either to inform,...

(1) Seaweed-based fuel could one day power your car. (2) It is more than just an ingredient in a purifying face mask or a sushi roll. (3) According to new research, seaweed has the potential to become an advanced biofuel known as biobutanol. (4) In the past, U.S. scientists have looked to the possibility of algae-based biofuels, but most of these explorations have shied away from kelp and seaweed. (5) One reason why seaweed may not have taken off as a potential fuel source is the fact that it...

Discuss how setting and time frame are relevant to a text's meaning? - They help the reader place the story in a time and a space. Author uses setting and time frame to anchor text, create a mood, and enhance the meaning. Pronoun - A word that replaces a noun such as I, He, She, You, It, We, or they. antecedent agreement - pronoun must agree with antecedent in number (singular/plural)/gender (masculine/feminine)/person (first/second/third) Explain why proof reading is an important pa...

a word that names a person, a place, a thing, or an idea. correct answer: noun a general name e.g. man, religion, document correct answer: common noun names someone or something particular e.g. Andrew Jackson, Buddhism, the Declaration of Independence correct answer: proper noun names an object that occupies space or that can be recognized by the senses e.g. wall juice sun correct answer: concrete noun an idea, a quality, or a characteristic e.g. liberty, freshness, dedicat...

Directions for questions 1-11 Select the best version of the underlined part of the sentence. The first choice is the same as the original sentence. If you think the original sentence is best, choose the first answer. To walk, biking, and driving are Pat's favorite ways of getting around. A. To walk, biking, and driving B. Walking, biking, and driving C. To walk, biking, and to drive D. To walk, to bike, and also driving correct answer: B When you cross the street in the middle...

A DP-2 policy would pay a claim for in which scenario? correct answer: rioters set fire to the front porch K has a construction business that is installing an air conditioner. K asks his agent for a policy that would cover the installation until completion. Which policy will Ks agent sell him? correct answer: installation floater Installation Floater correct answer: installation policies provide coverage during installation. Nonresident License correct answer: Agents may receive a n...

Foods associated with Salmonella outbreak correct answer: eggs, meat, poultry detection and isolation procedure for salmonella correct answer: pre-enrichment selective enrichment streak for isolation confirmation using slants further confirmation using PCR media used for pre-enrichment of salmonella correct answer: LB broth - lactose broth media used for selective enrichment of salmonella correct answer: SC and RV broth media used for isolation of salmonella correct answer: ...

Foods associated with Salmonella outbreak correct answer: eggs, meat, poultry detection and isolation procedure for salmonella correct answer: pre-enrichment selective enrichment streak for isolation confirmation using slants further confirmation using PCR media used for pre-enrichment of salmonella correct answer: LB broth - lactose broth media used for selective enrichment of salmonella correct answer: SC and RV broth media used for isolation of salmonella correct answer: ...

TSI correct answer: Triple Sugar Iron Yellow= acid production or fermentation of the sugars in the slant or butt. Gas production= indicated by the agar lifting up or breaking Red= negative or uninoculated Black= H2S production due to FeS precipitation (think salmonella or proteus) The source of Sulfur for H2S production by bacteria is the amino acid Cysteine TSI additional correct answer: Triple Sugar-Iron agar slants. is a differential medium containing 3 sugars called glucose...