Chem 120 final exam 3 - Study guides, Class notes & Summaries

CHEM 120 Final Exam 1 GRADED A+ (ACTUAL EXAM ) Questions and Answers (Solved) 1. define matter Answer: anything that has mass and takes up space 2. what is not considered matter? Answer: light, heat, electricity 3. definite shape, definite volume Answer: solid 4. indefinite shape, definite volume Answer: liquid 5. indefinite shape, indefinite volume Answer: gas 6. pure substance Answer: one substance; definite and constant composition; can't beseparated into 2 kinds of matter by p...

Chem 120 Final Exam 2 GRADED A+ (ACTUAL EXAM ) Questions and Answers (Solved) 1. Dalton'sTheory Answer: All matter is composed of small invisible particles called atomsAll atoms of a given element are alike in mass and other properties The atoms of one element are different from atoms of all other elements 2. Law of Conservation of Mass Answer: Matter is neither created nor destroyed Atoms of one element cannot be changed into atoms of another element by chemical reactions 3. law of ...

CHEM 120 WEEK 8 Final Exam 2023 with correct answers Already graded A+ molarity = moles solute / liters solution 0.25 M = moles NaOH / 0.035 L moles NaOH = 0.00875 moles NaOH 1. (TCO 8) 35.0 mL of 0.25 M NaOH is neutralized by 23.6 mL of an HCl solution. The molarity of the HCl solution is (show your work): (Points : 5) 2. (TCO 1) How many mL are in 3.5 pints? Show your work. (Points : 5) 3.5 pints is equivalent to 1656.116 1 pint = 473.176 ml 3.5 pints* 473.176mL = 1656.116mL 3. (TC...

CHEM 120 Final Exam Review (Latest 2023 - 2024) New Full Exam Questions and Answers ( Included ) 100% Correct 1. significant figures Answer: a digit that is either reliably known or closely estimated 2. Significant Figure Rules Answer: 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 ...

CHEM 120 Final Exam-Q & A (Version 3), Best document for preparation, Verified And Correct Answers Course Number: CHEM120 Course Title: Introduction to General, Organic & Biological Chemistry with Lab Chamberlain College of Nursing

Chem 120 final exam 4 GRADED A+ (ACTUAL EXAM ) Questions and Answers (Solved) 1. Exam 1- Which of the following correctly describes a physical change? Burning a candle, Rusting of iron, Photosynthesis of glucose, Subliming ofdry ice. Answer: Subliming of dry ice 2. If someone is conducting a study on trees, the statement "leaves turn colorin the fall b/c the amount of sunlight they receive is reduced is a: Answer: Hypothesis 3. The number of significant figures in the measurement of 45...

Portage Learning Chem 210 Biochem Final Exam 2023/2024 SOLVED What are the three things biochemists study? - 1. the relationship between structure and function of a biomolecule 2. chemical reactions of organisms (metabolism) 3. communication with and among organisms (chemical messengers) Which protein is found in lightening bugs to produce light? - luciferin How many elements are found in living organisms? - 30 or less What type of elements do you find in living organisms? - smaller, non...

CHEM 120 Week 8 Final Exam Questions-Answers (Version 1) 2023 UPDATE6. (TCO 6) A gas at a temperature of 95 degrees C occupies a volume of 165 mL. Assuming constant pressure, determine the volume at 25 degrees C. Show your work. (Points : 5) 7. (TCO 6) A sample of helium gas occupies 1021 mL at 719 mmHg. For a gas sample at constant temperature, determine the volume of helium at 745 mmHg. Show your work. (Points : 5) 8. (TCO 12) If one strand of a DNA double helix has the sequence T T A G C G ...