Chemistry chem 103 - Study guides, Class notes & Summaries

CHEM 101 Final Ivy Tech Exam| 155 Questions With Verified Answers What is the definition of a scientific theory? Correct Answer: a model that explains the underlying reasons for observations and laws What term best describes a brief statement that summarizes many past observations and predicts new ones? Correct Answer: scientific law Which of the following is an example of a scientific law? Correct Answer: In a chemical reaction, matter is neither created nor destroyed. Which of the ...

PORTAGE LEARNING CHEMISTRY CHEM 103 UNIT 2 EXAM QUESTIONS WITH COMPLETE SOLUTIONS VERIFIED 1. Ca3N2 Ca 3 x 40.08 = 120.24 N 2 x 14.01 = 28.02 120.24 + 28.02 = 148.26 2. Li3PO4 Li 3 x 6.941 = 20.823 P 1 x 30.97 = 30.97 O 4 x 16.00 = 64.00 20.823 + 30.97 + 64.00 = 115.793 3. NH4NO3 N 2 x 14.01 = 28.02 H 4 x 1.008 = 4.032 O 3 x 16.00 = 48.00 28.02 + 4.032 + 48.00 = 80.052 Number your answers, and show your work. Be sure to give answers with the correct units. Calculate the ...

The unit “m” stands for _______ in this experiment. 2. (4 points) Why was warming data used for estimating the freezing/melting point of the cyclohexane? 3. (3 points) How much of the cyclohexane solvent was placed in the test? 1.) molarity 2.) It is considered reliable. It is a dependable predicator of the freezing/melting point of a substnace. it can determine the temperatures when the change occurs. 3.) 10 mL of cyclohexane 1. molality 2. Solids tend to supercool, which gives fa...

CHEM 103 Chemistry Lab Report 4 Thermochemistry (Portage learning) 2023/2024

CHEM 103 General Chemistry Module 1, 2, 3, 4, 5, 6 Exam (Latest-2023)/ CHEM103 General Chemistry Module 1, 2, 3, 4, 5, 6 Exam: Portage Learning |100% Correct Q & A|

CHEM 103 Module 3 Exam Portage Learning 2023. NH4Cl is being dissolved in water and this process is being studied in a styrofoam coffee cup with a lid and the heat absorbed is measured by means of a thermometer immersed in the reaction mixture. Enter the correct thermochemistry term to describe the item listed. 1. The type of thermochemical process 2. The air above the cup Your Answer: 1) endothermic 2) Surroundings 1. Heat absorbed = Endothermic process 2. The air above the cup = Surro...

CHEM 103 Final Exam (2 Versions, Latest-2022)/ CHEM103 Final Exam / CHEM 103 General Chemistry Final Exam/ CHEM103 General Chemistry Final Exam: Portage Learning |Verified Q & A|