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 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 ...

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...

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