Chem 120 final - Study guides, Class notes & Summaries

CHEM 120 FINAL EXAM (PRACTICE PROBLEMS) QUESTIONS WITH 100% CORRECT ANSWERS

Chem 120 final exam 114 questions with 100% correct answers Latest Updated Chem 120 final exam 114 questions with 100% correct answers Latest Updated Chem 120 final exam 114 questions with 100% correct answers Latest Updated

Chem 120 final exam | Questions and Correct Answers | Latest Update 2024/2025 | 100% Pass What is the correct order of melting points for the following alkanes, from highest to lowest temperature? - Answer -heptane > hexane > ethane > methane 2. Given an alkane that contains 25 carbon atoms. How many hydrogen atoms are present in its structure? a) - Answer -) 52 3. Which of the following properly describes constitutional (structural) isomers? - Answer -compounds with the same ...

Chem 120 final exam questions and answers 2024

Chem 120 final exam questions and answers 2024.

Chem 120 final exam questions and answers 2024

How many bonds can nitrogen have? Which rule or principle should be used? A) Five bonds; octet rule. B) Three bonds; octet rule. C) Three bonds; the Hund's rule. D) Five bonds; the Aufbau Principle. correct answer: B When two hydrogen atoms meet, they will attract to each other and form a bond (and a H2 molecule). Why? A) Because electrons like to stay together. B) Because electrons like to be paired up. C) Because there is attraction between the electron in one hydrogen atom an...

Chem 120 Final Exam | Questions and Correct Answers | Latest Update 2024/2025 | 100% Pass molecular mass (molecular weight) - Answer -the sum of the atomic masses, in atomic mass units, of all the atoms in the formula of a compound empirical formula - Answer -a chemical formula showing the ratio of elements in a compound rather than the total number of atoms Avogadro's number (Mole) - Answer -6.02 x 10^23 proton - Answer -A subatomic particle that has a positive charge and that is ...

significant figures a digit that is either reliably known or closely estimated Significant Figure Rules 1. All non-zero digits are always significant 2. Zeroes between non-zero digits are always significant 3. Zeroes to left of first non-zero digit (either before or after decimal point) are never significant 4. Zeroes to the right of last non-zero digit a. after decimal point are always significant b. which are before decimal point are not significant conversion factor relationship...

JMU Chem 120 Final | Questions and Correct Answers | Latest Update 2024/2025 | Graded A+ scientific notation - Answer -3.94 x 10⁷= 0.000008 = 8.0 x 10⁻⁶ measured v. exact numbers - Answer -measured = obtained through measurement and are uncertain exact = obtained through counting and are certain precision v. accuracy - Answer -precision = close to each other accuracy = close to the actual number conversion factor - Answer -a ratio of e