R/S Configuration Practice Worksheet and Solutions

ByMayya Alocci

Let’s do some R/S configuration practice and check solutions.1. Assign R/S configuration to each chirality center in the following molecules: 2. Draw the line bond structures of the following molecules:a. (S)-3-ethyl-2-methyloctaneb. (3R,5S,6R)-5-ethyl-3,6-dimethylnonanec. (4R,5S)-4,5-diethyloctaned. (3S,6S)-6-isopropyl-3-methyldecane CHALLENGE PROBLEM3. Assign R/S configuration to each chirality center in the following molecule called brucine: LINKS Organic Chemistry Course Online Organic…

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Regents Chemistry Practice Problems : ENERGY AND HEAT

ByMayya Alocci

Regents Chemistry Practice Problems : ENERGY AND HEAT Topics include: heating and cooling curve diagrams, calculating heat of reaction using Heat of Fusion, Heat of Vaporization and specific heat capacity, temperature. REGENTS CHEMISTRY COURSE June 2024 1. 2. 3. January 2024 4. 5. August 2023 6. January 2023 June 2022 8. 9. REGENTS CHEMISTRY COURSE…

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Significant Figures With Mayya (Rules, Practice, Solutions)

ByMayya Alocci

Significant figures (sig figs) are used to indicate the precision of a measured number. Significant figures are the digits in a measured number that are known with certainty plus one last digit which is less certain. Rules For Significant Figures How many significant figures are in the following numbers? 786 1.20 2006 4.0500 0.4 0.003060…

How To Draw Bond-Line Structures From Condensed Structures

ByMayya Alocci

Bond-line structures, also called line-angle or skeletal structures are simple representations of organic molecules that will be used throughout your organic chemistry class. Understanding and being able to draw these structures is crucial. How To Read A Bond-Line Structure In a bond-line structure, carbons are not shown. Instead, ends of the lines and lines coming…

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Le Chatelier’s Principle- Complete Guide With Examples

ByMayya Alocci

What does Le Chatelier’s Principle State? Henri-Louis Le Châtelier, a French industrial chemist came up with Le Chatelier’s principle, which states that If a system at equilibrium is disturbed by a change in temperature, pressure, or a component concentration, the system will shift its equilibrium position so as to counteract the effect of the disturbance. This means…

Resonance Structures Practice Worksheet And Solutions

ByMayya Alocci

Resonance Forms Practice And Solutions Write all possible resonance structures and be sure to include formal charges where appropriate. Include lone pairs of electrons if they are not shown. Do you want to print and work on my Resonance Practice Worksheet? Here you go! Do you want to see all the answers to the Resonance…

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How To Draw Resonance Structures: Complete Guide by Mayya Alocci

ByMayya Alocci

Resonance structures are multiple electronic representations of the same molecule. The only difference between resonance structures is the location of electrons. A molecule is a hybrid of all of its resonance structures. What this means is that a molecule does NOT switch from one resonance form to another. Rather, it is a combination of all…

Regents Chemistry Practice Problems : CHEMICAL CALCULATIONS/ STOICHIOMETRY

ByMayya Alocci

Topics include: mole calculations, % composition by mass, mole to mole problems using equations, calculating average atomic mass and formula mass, empirical versus molecular formula. REGENTS CHEMISTRY COURSE June 2024 1. 2. January 2024 3. August 2023 4. June 2023 5. 6. January 2023 7. 8. 9. 10. REGENTS CHEMISTRY COURSE and other topics practice.

Regents Chemistry Practice Problems : FORMULAS, EQUATIONS AND CHEMICAL REACTIONS

ByMayya Alocci

Topics include: ionic and molecular naming and formulas, classifying chemical reactions and balancing chemical equations.  REGENTS CHEMISTRY COURSE June 2023 1. 2. August 2023 3. January 2023 4. 5. August 2022 6. January 2020 7. 8. August 2019 9. REGENTS CHEMISTRY COURSE and other topics practice.