dr. jim romano

Organic Chemistry Mechanism Challenge: Can You Follow the Arrows? One of the most important skills in organic chemistry is understanding how electrons move during a reaction. Students preparing for the DAT or OAT often memorize reaction mechanisms, but understanding why electrons move in a...

Organic Chemistry Mechanism Challenge: Can You Follow the Arrows? One of the most important skills in organic chemistry is understanding how electrons move during a reaction. Students preparing for the DAT or OAT often memorize reaction mechanisms, but understanding why electrons move in a...

Preparing for the DAT or OAT? Test your understanding of cyclohexane chair conformations, cis stereochemistry, and axial versus equatorial substituents with today's organic chemistry practice problem from Dr. Jim Romano. Review the two slides for the question and detailed explanation...

DAT Destroyer | OAT Destroyer | Organic Chemistry Practice Here's another organic chemistry practice question from Dr. Jim Romano for students preparing for the DAT and OAT. Today's question compares Tioconazole and Fluconazole and tests your understanding of chirality, optical activity, and...

We are pleased to announce that Mariam Attia is the winner of our 2026 DAT Destroyer and Math Destroyer giveaway with Rutgers Project Dental ALL! Orgoman was proud to support Rutgers Project Dental ALL and its efforts to provide valuable educational resources to students preparing for dental...

We are pleased to congratulate David Abdelkodos, winner of the 2026 DAT Destroyer giveaway at Nova Southeastern University's ASDA Pre-Dental Weekend, held October 24–25, 2026. Orgoman was happy to support the NSU ASDA Pre-Dental Committee and its efforts to provide valuable educational...

How well do you understand resonance and bond lengths in aromatic compounds? Today's DAT/OAT Organic Chemistry practice problem focuses on naphthalene, a molecule containing two fused aromatic rings. Question: How many different carbon–carbon bond lengths would be measured in naphthalene...

How well do you understand resonance and bond lengths in aromatic compounds? Today's DAT/OAT Organic Chemistry practice problem focuses on naphthalene, a molecule containing two fused aromatic rings. Question: How many different carbon–carbon bond lengths would be measured in naphthalene...

DAT and OAT Organic Chemistry Practice Problem | DAT Destroyer | OAT Destroyer | Dr. Jim Romano Today's organic chemistry practice question from Dr. Jim Romano focuses on carbon hybridization and unhybridized p orbitals. Understanding how hybridization relates to the number of available p...

Dr. Jim Romano shares a memorable experience from his chemistry days involving a corrosive chemical that turned his hands bright yellow! Can you identify the chemical responsible? This General Chemistry practice question explores acid properties and chemical reactions involving proteins in the...

Dr. Jim Romano shares a memorable experience from his chemistry days involving a corrosive chemical that turned his hands bright yellow! Can you identify the chemical responsible? This General Chemistry practice question explores acid properties and chemical reactions involving proteins in the...

Ready for another DAT and OAT math challenge? Today's problem involves a quadrilateral divided into two triangles with different areas. This problem tests your ability to apply algebraic equations and geometric area relationships, important skills for DAT and OAT Quantitative Reasoning...

Today's General Chemistry practice problem explores elemental abundance and the composition of the universe. This is an important concept for students preparing for the DAT and OAT General Chemistry sections. Slide 1: Read the question and select your answer. Slide 2: Check your answer and...

Today's General Chemistry practice problem explores elemental abundance and the composition of the universe. This is an important concept for students preparing for the DAT and OAT General Chemistry sections. Slide 1: Read the question and select your answer. Slide 2: Check your answer and...

Learn how to write net ionic equations and understand solubility rules with Dr. Jim Romano. This General Chemistry lesson covers concepts important for students preparing for the DAT and OAT. Watch the free video: 📚 All DAT & OAT Destroyer Books: https://orgoman.com/collections/all-books 📚...

Learn how to write net ionic equations and understand solubility rules with Dr. Jim Romano. This General Chemistry lesson covers concepts important for students preparing for the DAT and OAT. Watch the free video: 📚 All DAT & OAT Destroyer Books: https://orgoman.com/collections/all-books 📚...

Today's DAT and OAT Quantitative Reasoning practice problem focuses on percentage increases and investment calculations. This problem is from Dr. Jim Romano's Math Destroyer. Try solving it before reviewing the solution. For additional preparation: Free DAT Preparation Resources...

Today's DAT and OAT Quantitative Reasoning practice problem focuses on percentage increases and investment calculations. This problem is from Dr. Jim Romano's Math Destroyer. Try solving it before reviewing the solution. For additional preparation: Free DAT Preparation Resources...

SN1 and SN2 reactions are important topics to understand when preparing for the DAT or OAT Organic Chemistry section. In this 3-minute video, Dr. Jim Romano reviews substitution reactions and helps students strengthen their understanding of organic chemistry. Watch the video here: Hope this...

DAT General Chemistry Practice Question | Le Chatelier's Principle Today's General Chemistry practice question from Dr. Jim Romano covers chemical equilibrium, exothermic reactions, and reaction rate constants. Can you determine what happens to the equilibrium constant and forward rate...

DAT General Chemistry Practice Question | Le Chatelier's Principle Today's General Chemistry practice question from Dr. Jim Romano covers chemical equilibrium, exothermic reactions, and reaction rate constants. Can you determine what happens to the equilibrium constant and forward rate...

Test your DAT/OAT General Chemistry skills with today's practice question. Work it out before checking the answer. DAT Destroyer: https://orgoman.com/products/dat-destroyer OAT Destroyer: https://orgoman.com/products/oat-destroyer Math Destroyer: https://orgoman.com/products/math-destroyer...

Test your DAT/OAT General Chemistry skills with today's practice question. Work it out before checking the answer. DAT Destroyer: https://orgoman.com/products/dat-destroyer OAT Destroyer: https://orgoman.com/products/oat-destroyer Math Destroyer: https://orgoman.com/products/math-destroyer...

Test your DAT/OAT math skills with today's practice problem. Work it out before checking the solution. DAT Destroyer: https://orgoman.com/products/dat-destroyer OAT Destroyer: https://orgoman.com/products/oat-destroyer Math Destroyer: https://orgoman.com/products/math-destroyer Free DAT...

Test your DAT/OAT math skills with today's practice problem. Work it out before checking the solution. DAT Destroyer: https://orgoman.com/products/dat-destroyer OAT Destroyer: https://orgoman.com/products/oat-destroyer Math Destroyer: https://orgoman.com/products/math-destroyer Free DAT...

Here is today’s General Chemistry practice problem from Dr. Jim Romano. At 25°C, compare the osmotic pressures of a 0.9% (w/v) NaCl solution and a 25% (w/v) dextran solution (MW = 15,000). Approximately what factor separates their osmotic pressures? Try the problem before looking at Dr...

Here is today’s General Chemistry practice problem from Dr. Jim Romano. At 25°C, compare the osmotic pressures of a 0.9% (w/v) NaCl solution and a 25% (w/v) dextran solution (MW = 15,000). Approximately what factor separates their osmotic pressures? Try the problem before looking at Dr...

Lewis structures and molecular geometry are important General Chemistry concepts for students preparing for the DAT and OAT. In this video, Dr. Jim Romano reviews Lewis structures, molecular geometry, bonding, electron arrangement, and molecular shape. Understanding how molecular structure...

Lewis structures and molecular geometry are important General Chemistry concepts for students preparing for the DAT and OAT. In this video, Dr. Jim Romano reviews Lewis structures, molecular geometry, bonding, electron arrangement, and molecular shape. Understanding how molecular structure...

Here is a quantitative reasoning practice problem for students preparing for the DAT or OAT. This problem focuses on percentages and translating the information in a word problem into the correct calculation. Problems like this are useful practice for working accurately and efficiently under...

Here is a quantitative reasoning practice problem for students preparing for the DAT or OAT. This problem focuses on percentages and translating the information in a word problem into the correct calculation. Problems like this are useful practice for working accurately and efficiently under...

Test your understanding of ionization energy and periodic trends with today’s DAT and OAT General Chemistry practice question. Consider the process shown in the problem and determine which atom would display the greatest endothermicity. Work through the problem before checking Dr. Romano’s...

Test your understanding of ionization energy and periodic trends with today’s DAT and OAT General Chemistry practice question. Consider the process shown in the problem and determine which atom would display the greatest endothermicity. Work through the problem before checking Dr. Romano’s...

Chemical equilibrium and ICE tables are important topics to understand for both DAT and OAT General Chemistry. In this video, Dr. Jim Romano reviews equilibrium and demonstrates how to approach the dreaded ICE table step by step. Watch the video: DAT & OAT Study Resources: DAT Destroyer and...

Chemical equilibrium and ICE tables are important topics to understand for both DAT and OAT General Chemistry. In this video, Dr. Jim Romano reviews equilibrium and demonstrates how to approach the dreaded ICE table step by step. Watch the video: DAT & OAT Study Resources: DAT Destroyer and...

Here is a quick quantitative reasoning problem for DAT and OAT students practicing exponent patterns and ones digits. Recognizing a repeating ones-digit pattern can often let you solve this type of problem quickly without a calculator. Work through the problem first, then check the second slide...

Here is a quick quantitative reasoning problem for DAT and OAT students practicing exponent patterns and ones digits. Recognizing a repeating ones-digit pattern can often let you solve this type of problem quickly without a calculator. Work through the problem first, then check the second slide...

Here’s a DAT and OAT Quantitative Reasoning practice problem focusing on multiples and divisibility, two basic math skills students should be comfortable applying quickly on test day. Work through the problem first, then check the second slide for the solution. DAT & OAT Study Resources Free...

Here’s a DAT and OAT Quantitative Reasoning practice problem focusing on multiples and divisibility, two basic math skills students should be comfortable applying quickly on test day. Work through the problem first, then check the second slide for the solution. DAT & OAT Study Resources Free...