Do I need to memorize the gas constant for MCAT?

Yes, you should memorize the common values for the ideal gas constant ( 𝑅 𝑅 ), specifically 0.0821 L·atm/(mol·K) and 8.314 J/(mol·K), and the molar volume at STP (22.4 L/mol) to save time, though the AAMC often provides them or lets you cancel them out in passages. Knowing these key gas constant values and the Ideal Gas Law ( 𝑃 𝑉 = 𝑛 𝑅 𝑇 𝑃 𝑉 = 𝑛 𝑅 𝑇 ) is crucial for quickly solving chemistry and physics problems, understanding gas relationships, and interpreting experimental data.

Do you need to memorize gas constant for MCAT?

Yes! Make sure you memorize the 2 main values of the ideal gas constant utilized in the ideal gas law — 0.0821 L*atm/mol*K and 8.314 J*mol/K. For the most part, the MCAT will indicate to you which constant to use!

What constants do you need to memorize for MCAT?

Some constants include:

• acceleration of gravity on Earth.
• density of water.
• Coulomb's constant.
• elementary charge.
• speed of sound in air.
• speed of light in vacuum.

Do I need to memorize formulas for MCAT?

Do you have to memorize equations for the MCAT? Yes. You will not have access to a formula sheet during the exam. This means you will need to spend time memorizing physics and chemistry equations, how they're related, and when to apply them.

Do you need to memorize constants for MCAT Reddit?

Safe bet is to memorize all the common ones. Often enough they'll give it to you, but it's not a given. The stuff they tend to give you are the gas constants, Planck's, occasionally the electron-volt. But even then, having those numbers in your head, imo, speeds up solving quite a bit.

Be Lazy! Don't Memorize the Gas Laws!

What would a 70% on the MCAT be?

A 70th percentile on the MCAT means you scored better than 70% of test-takers, which generally translates to a total score around 507-508, placing you in a competitive range for MD medical school admissions, though specific school averages vary. Your actual score might differ slightly as percentiles shift, but this score is strong, showing solid performance above the average (around 500).
 

Is the MCAT mostly memorization?

The MCAT is not a memorization test. Let me be more specific: it's much more about recall than it is about recognition. When you're prepping for the Psych/Soc section of the MCAT, you'll learn about different types of memory—sensory, working, procedural, episodic—how memory is stored, and how it's retrieved.

Is physics 1 enough for MCAT?

No, you will be required to understand and apply concepts from Physics 1 and Physics 2 to score well in MCAT physics. For example, you would know Newtonian physics and energy equations from Physics 1, but would not have a thorough understanding of electricity, magnetism, and circuits without taking Physics 2.

What level of chemistry is on the MCAT?

Exam content will draw from*:

First-semester biochemistry, 25% Introductory biology, 5% General chemistry, 30% Organic chemistry, 15%

How to study MCAT when you know nothing at all?

How to Study for the MCAT: Study Tips from 99th-Percentile Tutors

1. Start Early.
2. Plan a Balanced Study Schedule.
3. Understand, Don't Just Memorize.
4. Take High-Quality Practice Exams.
5. Create a Strategic Approach to CARS.
6. Prioritize High-Yield Topics.
7. Practice Critical Thinking.
8. Take Care of Your Body and Mind.

Do I need to memorize Boltzmann constant for MCAT?

The Boltzmann constant, represented by k or kB, is a fundamental constant used in several thermodynamic equations. While you may not need to memorize the exact quantity of this constant, it is useful to recognize that it is a defined constant.

What strong acids do you need to memorize for the MCAT?

For the MCAT, you should know that strong acids are acids that dissociate completely in solution. There are six of them that you have to have memorized for the MCAT. They are H2SO4 (or sulfuric acid), HI (hydrologic acid), HBr (hydrobromic acid), HNO3 (nitric acid), HCl (hydrochloric acid) and HClO4 (perchloric acid).

What is the ideal amount of time to study for the MCAT?

Most people need 10–15 hours per week to study for the MCAT over a period of at least four to six months . In total, you should aim for at least 200 to 300 hours of MCAT study time.

Why can you only take the MCAT seven times?

Retaking the MCAT three or more times can raise questions for certain admissions committees. Ideally, you should aim to demonstrate significant score improvement with each retake.

How do I decide whether to use 0.0821 or 8.314 for R?

Say you're using the ideal gas law, the units will have to cancel to give you a correct answer. Because that equation uses pressure, volume, temp and moles, then you know you would use 0.08 L atm/mol K. However, if you're using an equation that deals with energy (like RTlnK), then use the 8.314 J/molK so units cancel.

What is the MCAT without memorizing formulas break units open?

Break Units Open: MCAT Without Memorizing Formulas was developed out of experience with training/tutoring MCAT students for 11 years, recognizing and addressing repetitive questions about and difficulties with approaching questions requiring formulas and math-without-calculator on the MCAT.

What is 90% correct on MCAT?

Getting 90% correct on the MCAT isn't a fixed score but roughly translates to a high 120s to low 130s per section, placing you in the 90th percentile (around 515 total score), making you a very strong candidate, though scores vary by section difficulty and question weighting, with 5-10 wrong often being a 128-130 range in practice tests. A 90% accuracy means around 5-10 wrong answers out of ~53 questions in a section, but precise conversions depend on the test's equating. 

How rare is a 525 MCAT?

A 525 MCAT score is extremely rare and exceptional, placing you in the 100th percentile, meaning you scored better than 100% of test-takers in recent years (2022-2024) and are just 3 points shy of a perfect score (528). This score is considered a top-tier score for the most selective medical schools, putting you in a statistically tiny fraction of applicants, as scores above 520 represent the top 1-3%. 

What is a 78% on the MCAT?

A 78% on the MCAT generally translates to a total score of 510, placing you in the 78th percentile, meaning you scored better than 78% of test-takers, which is a strong, competitive score for many medical schools, often above average for MD programs. While not in the highest tiers (like 90th percentile+), it's a very solid score that makes you competitive, especially when combined with a strong GPA and experiences. 

What is the most heavily tested subject on the MCAT?

The biological and biochemical sciences are the most heavily tested subjects on the MCAT. While other subjects like chemistry, physics, psychology, and sociology are also important, the biological and biochemical sciences remain consistently prominent and heavily tested on the MCAT.

What is a good first MCAT score?

A good MCAT score is generally considered to be 511 or higher, with no section score below 127. The MCAT, also known as the Medical College Admission Test, is a computer-based standardized exam designed to assess your potential as a medical student and doctor.

Is 491 a bad MCAT score?

Yes, a 491 is generally considered a low MCAT score, placing you in the lower percentiles (around the 20th percentile) and significantly below the average (around 500-501) and competitive scores (511+) for most MD programs, making admission difficult but not impossible, especially for DO or Caribbean schools with lower averages, or if balanced with a stellar GPA/experiences, though a retake is often recommended for better MD chances.
 

What is the 20 20 20 rule for memorizing?

Memory experts recommend the 20-20-20 rule, which prescribes going over the details of a presentation for 20 minutes, then repeating the same material twice more. If material is not repeated within 30 minutes, it is not encoded into long-term memory.

Is retaking the MCAT a red flag?

Retaking the MCAT isn't an automatic red flag, but it warrants careful management; consistent improvement with each retake is positive, showing resilience, while stagnant or declining scores raise concerns, suggesting potential issues with preparation or readiness, requiring a strong explanation in your application. Most schools look at your highest score, but multiple attempts (especially 3+) can draw attention, so demonstrating significant growth, strengthening other application areas (GPA, experience), and having a solid narrative is crucial for success.