Chem 106 Study guides, Class notes & Summaries

CHEM 106: Lab Report 14; Acids, Bases, Salts and Buffers Acids and bases are pHun. Lab Report 14. Introduction: The purpose of this lab is to further explore acid-base indicators and buffer solutions. Acids, bases, and salts are common in our everyday lives. They are found in our food, detergents, toothpaste, etc. An acid is a substance that yields H + ions when dissolved in water. A base is a substance that yields OH − ions when dissolved in water. A salt results when an acid reacts wi...

CHEM 162 FINAL WXAM QUESTIONS AND ANSWERS, LATEST UPDATED 2024/2025 (GRADED) Which one of the following nuclear reactions is not correct? A. 226 88Ra → 222 86Ra + α B. 63 28Ni → 63 29Cu + βC. 11 C → 11 B + β+ D. 14 C → 14 N + βE. 14 7N + 1 0n → 14 C + 1 1p A. Correct. 22688Ra → 22286Ra + 4 α B. Correct. 6328Ni → 6329Cu + 0 -1e C. Not correct. 11 C → 11 B + 0 e 3 6 7 -1 6 D. Correct. 14 C → 14 N + 0 e E. Correct. 147N + 1 0n → 14 C + 1 1p CHEM 162...

Which one of the following nuclear reactions is not correct? A. 226 88Ra → 222 86Ra + α B. 63 28Ni → 63 29Cu + βC. 11 C → 11 B + β+ D. 14 C → 14 N + βE. 14 7N + 1 0n → 14 C + 1 1p A. Correct. 22688Ra → 22286Ra + 4 α B. Correct. 6328Ni → 6329Cu + 0 -1e C. Not correct. 11 C → 11 B + 0 e 3 6 7 -1 6 D. Correct. 14 C → 14 N + 0 e E. Correct. 147N + 1 0n → 14 C + 1 1p CHEM 162-2009 FINAL EXAM CHAPTER 19 - THE NUCLEUS RADIOACTIVE DECAY PARTICLES AND R...

Homogeneous Mixtures Composition may vary; appears to be one substance, but really contains multiple materials; most are actually solutions Aqueous Solutions Have water as solvent, and solid, liquid, or gas as the solute Solutions Homogeneous mixtures Solute The component of the solution that changes state Solvent The component that keeps its state Entropy (Delta S): The measure of energy dispersal and disorder in the system Solvent-Solute Intera...

CHEM 1001 Lab 1 Report (Reaction Rates), Winter 2021 Please write your name, student number and your signature on every page of work you submit. The lab must be completed on this template (either printed/handwritten/scanned, or typed). If the report is typed, proper scientific syntax/notation is required (ex: 5.76 x 106 instead of 5.75*10^6) NOTE: This lab report must be an independently produced piece of work. Collaboration of any kind is not permitted and violates the Senate Policy on Ac...

CHEM Exam Questions with Answers The combustion of ethane (C2H6) is represented by the equation: 2C2H6(g) + 7O2(g) → 4CO2(g) + 6H2O(l) In this reaction: A. the rate of consumption of ethane is seven times faster than the rate of consumption of oxygen. B. the rate of formation of CO2 equals the rate of formation of water. C. water is formed at a rate equal to two-thirds the rate of formation of CO2. D. the rate of consumption of oxygen equals the rate of consumption of water. E. ...

1. For lower premolars, the purpose of inclining the handpiece lingually is to, A. Avoid buccal pulp horn B. Avoid lingual pulp horn C. Remove unsupported enamel D. Conserve lingual dentine - ANSWER A. Avoid buccal pulp horn Explanation 1- avoid BUCCAL pulp horn 2- conserve ling. dentine So take A and B if available 2. For an amalgam restoration of a weakened cusp you should, A. reduce cusp by 2mm on a flat base for more resistance B. reduce cusp by 2mm following the outli...