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Chemistry Forum

Join the expert discussion on chemistry. Chemistry is the study of the nature, properties, and composition of matter. Biochemistry, Organic, Inorganic, Analytical are topics that may be discussed.

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What is the molar heat of self-decomposition of nitric acid?

Aug 2, 2019 · Replies 1 · Aug 19, 2019

Replies: 1

Views: 2K

Is Zinc alloy or Aluminium alloy better?

Aug 17, 2019 · Replies 3 · Aug 19, 2019

Replies: 3

Views: 3K

Benzalkonium chloride leaked into basement floor

Aug 15, 2019 · Replies 3 · Aug 19, 2019

Replies: 3

Views: 2K

Question about mutations and disease

Aug 16, 2019 · Replies 5 · Aug 17, 2019

Replies: 5

Views: 2K

Naturally Occurring Elements: the latest version

Aug 14, 2019 · Replies 36 · Aug 15, 2019

2

Replies: 36

Views: 6K

Mixture Ratio for oxygen/propane in a rocket engine?

Jul 14, 2009 · Replies 1 · Aug 14, 2019

Replies: 1

Views: 11K

Standard enthelpies of formation of carbon nanotubes etc.

Aug 10, 2019 · Replies 2 · Aug 10, 2019

Replies: 2

Views: 2K

Andrew's experiment on liquefaction of gases

Aug 8, 2019 · Replies 3 · Aug 9, 2019

Replies: 3

Views: 2K

Van der Waals constant 'b' for a real gas

Aug 7, 2019 · Replies 18 · Aug 9, 2019

Replies: 18

Views: 4K

Can Fick's First Law Determine Diffusion Rate Without Surface Concentration?

Aug 6, 2019 · Replies 3 · Aug 7, 2019

Replies: 3

Views: 2K

Isolating CO2 in the electrolysis of Na2CO3 solution

Aug 1, 2019 · Replies 7 · Aug 4, 2019

Replies: 7

Views: 5K

Scratched Surfaces: Chemistry & Health Impacts

Jul 24, 2019 · Replies 14 · Aug 2, 2019

Replies: 14

Views: 5K

What is the heat of combustion of 1 kg carbon dioxide w/ magnesium?

Aug 1, 2019 · Replies 2 · Aug 2, 2019

Replies: 2

Views: 2K

Ideal Gas Law in Two Dimensions

Jul 31, 2019 · Replies 1 · Jul 31, 2019

Replies: 1

Views: 2K

Accidental Discovery of Charge-Polarity Fluid: What Are Its Uses?

Jul 26, 2019 · Replies 2 · Jul 27, 2019

Replies: 2

Views: 1K

Negative Charge Stability: Oxygen vs. Carbon/Nitrogen

Jul 11, 2019 · Replies 7 · Jul 21, 2019

Replies: 7

Views: 4K

Reverse reactions and Le Chateliers principle

Jun 23, 2019 · Replies 3 · Jul 20, 2019

Replies: 3

Views: 2K

Mixing Substances: Engineering Solutions for Dilution Challenges by Lee

Jul 8, 2019 · Replies 2 · Jul 13, 2019

Replies: 2

Views: 2K

How does one prepare standards for headspace gas chromatography?

Jun 26, 2019 · Replies 1 · Jul 13, 2019

Replies: 1

Views: 2K

How Much Vanish is Needed to Achieve Bacteriostatic and Fungicidal Effects?

Jun 29, 2019 · Replies 1 · Jul 13, 2019

Replies: 1

Views: 2K

Electrolysis and drift currents

Jul 12, 2019 · Replies 2 · Jul 12, 2019

Replies: 2

Views: 2K

How About Booger Problems in Reaction Stoichiometry

Jul 8, 2019 · Replies 6 · Jul 11, 2019

Replies: 6

Views: 2K

Selection of Flocculant for Industrial Wastewater Clarification

Jul 4, 2019 · Replies 1 · Jul 7, 2019

Replies: 1

Views: 2K

Can ammonium nitrate be safely used as a water pigment in dioramas?

Jun 29, 2019 · Replies 10 · Jul 4, 2019

Replies: 10

Views: 3K

Styrene to inert Hydrogen and inert Carbon

Jul 1, 2019 · Replies 2 · Jul 1, 2019

Replies: 2

Views: 1K

Exploring DF vs. RI Approximations

Jun 26, 2019 · Replies 5 · Jul 1, 2019

Replies: 5

Views: 3K

Basic questions about plasma and electrons in space

Jun 29, 2019 · Replies 4 · Jun 29, 2019

Replies: 4

Views: 2K

Are there any automated methods for detecting soil nutrient levels?

Jun 26, 2019 · Replies 1 · Jun 27, 2019

Replies: 1

Views: 2K

Non-enzyme detergent and egg whites

Jun 26, 2019 · Replies 3 · Jun 26, 2019

Replies: 3

Views: 2K

What is the difference between absorptance and absorbance in spectrophotometry?

Aug 6, 2018 · Replies 11 · Jun 25, 2019

Replies: 11

Views: 10K

-R effect in benzene causes anti-aromaticity?

Jun 23, 2019 · Replies 1 · Jun 25, 2019

Replies: 1

Views: 2K

How can C4 be detonated by heat or shock, only by electricity?

Jun 24, 2019 · Replies 1 · Jun 24, 2019

Replies: 1

Views: 4K

The Possibility of Value in Amalgam Alloys of Gold, Copper and Silver

Jun 2, 2019 · Replies 9 · Jun 22, 2019

Replies: 9

Views: 3K

Crystal with two different melting points

Jun 8, 2019 · Replies 2 · Jun 21, 2019

Replies: 2

Views: 3K

Which metal is safest for hair/scalp? Bismuth, silver or zinc oxide?

Jun 13, 2019 · Replies 9 · Jun 15, 2019

Replies: 9

Views: 3K

Poll

What is the equation for calculating [H3O+] in a salt of weak acid and base?

Jun 13, 2019 · Replies 7 · Jun 14, 2019

Replies: 7

Views: 2K

What is the configuration (R or S) of these molecules?

Jun 11, 2019 · Replies 9 · Jun 14, 2019

Replies: 9

Views: 2K

Decomposition reaction for theophylline, hexobarbital natrium

Jun 14, 2019 · Replies 1 · Jun 14, 2019

Replies: 1

Views: 1K

Can someone spot the error in the question?

Jun 10, 2019 · Replies 4 · Jun 13, 2019

Replies: 4

Views: 2K

Enthelpy vs Internal Energy in Phase Change

Jun 3, 2019 · Replies 12 · Jun 12, 2019

Replies: 12

Views: 5K

Voltaic Cell behaviour as described in this video

Jun 6, 2019 · Replies 7 · Jun 8, 2019

Replies: 7

Views: 2K

Which Site Will Grignard Reagent Attack: Ketone or Alkene?

Jun 5, 2019 · Replies 1 · Jun 5, 2019

Replies: 1

Views: 2K

A way to separate the components of a solution?

Apr 26, 2019 · Replies 8 · Jun 4, 2019

Replies: 8

Views: 3K

Molecular Orbits....what exactly is meant by orbitals having phase?

May 31, 2019 · Replies 5 · Jun 2, 2019

Replies: 5

Views: 2K

Why do snowflakes freeze into complex geometric patterns?

May 28, 2019 · Replies 3 · May 31, 2019

Replies: 3

Views: 2K

Adding xylitol to hot water lowers the boiling point and makes it boil

May 28, 2019 · Replies 6 · May 28, 2019

Replies: 6

Views: 3K

Phase diagrams for fractional distillation

May 24, 2019 · Replies 6 · May 27, 2019

Replies: 6

Views: 3K

CuO Unit Cell Optimization w/ DFT: Tips & Advice

May 20, 2019 · Replies 1 · May 21, 2019

Replies: 1

Views: 2K

Cleaning Solutions for Indoor Air Quality

May 18, 2019 · Replies 1 · May 21, 2019

Replies: 1

Views: 2K

How Dihalogens Catalyze Michael Addition Reactions. - NCBI - piectron?

May 20, 2019 · Replies 3 · May 20, 2019

Replies: 3

Views: 2K

Anyone good with organic chem reactions? I find this one really interesting

May 16, 2019 · Replies 4 · May 16, 2019

Replies: 4

Views: 2K

PPM Calibration Gas - HVAC Service Business

May 14, 2019 · Replies 5 · May 15, 2019

Replies: 5

Views: 2K

Help! Aquaponics Garden pH Too High - Need Advice!

May 14, 2019 · Replies 4 · May 14, 2019

Replies: 4

Views: 3K

What is the product of an acid-carbonate reaction?

Dec 8, 2008 · Replies 1 · May 13, 2019

Replies: 1

Views: 12K

Daniell cell initial equilibrium

May 10, 2019 · Replies 2 · May 11, 2019

Replies: 2

Views: 3K

How do I convert specific gravity of salt water to density and concentrations?

May 6, 2019 · Replies 10 · May 9, 2019

Replies: 10

Views: 4K

Relationship between k and orbital phase of solid state?

May 6, 2019 · Replies 3 · May 7, 2019

Replies: 3

Views: 2K

What is the color of chromium Cr##^{3+}##?

Mar 8, 2019 · Replies 8 · May 6, 2019

Replies: 8

Views: 5K

What element produces a vapor in comet tails?

May 1, 2019 · Replies 1 · May 2, 2019

Replies: 1

Views: 2K

Ion migration by diffusion in an electric field

Apr 25, 2019 · Replies 4 · Apr 29, 2019

Replies: 4

Views: 3K

Galvanic cell - open circuit voltage and EMF

Apr 24, 2019 · Replies 23 · Apr 28, 2019

Replies: 23

Views: 5K

How can I successfully grow high-quality KDP crystals?

Apr 26, 2019 · Replies 3 · Apr 28, 2019

Replies: 3

Views: 3K

Understanding the chemical process in a fuel cell

Apr 27, 2019 · Replies 2 · Apr 27, 2019

Replies: 2

Views: 2K

ZnO solution/Drop casting deposition

Apr 10, 2019 · Replies 1 · Apr 26, 2019

Replies: 1

Views: 2K

Help searching for SAMs (self-assembling monolayers) for a project

Apr 24, 2019 · Replies 1 · Apr 25, 2019

Replies: 1

Views: 2K

Why do we study or learn about ideal gases?

Feb 27, 2019 · Replies 4 · Apr 25, 2019

Replies: 4

Views: 4K

How did 19th century scientists measure atomic and molecular weight?

Apr 14, 2019 · Replies 6 · Apr 21, 2019

Replies: 6

Views: 5K

Entalphy of Formation: Why Use Water at Std Cond?

Apr 16, 2019 · Replies 3 · Apr 18, 2019

Replies: 3

Views: 3K

Sonochemistry(?) and cheese fermentation

Apr 15, 2019 · Replies 4 · Apr 18, 2019

Replies: 4

Views: 1K

Safe Methanol Substitute: Finding the Right Chemical

Apr 13, 2019 · Replies 8 · Apr 15, 2019

Replies: 8

Views: 4K

Understanding Polyatomic Ion Charges and Number of Oxygen

Apr 12, 2019 · Replies 2 · Apr 12, 2019

Replies: 2

Views: 3K

New Wonder Material Borekphene I mean Borophene

Apr 10, 2019 · Replies 3 · Apr 11, 2019

Replies: 3

Views: 2K

What temperature should be used for the Friedel-Crafts alkylation of benzene?

Apr 10, 2019 · Replies 1 · Apr 10, 2019

Replies: 1

Views: 3K

Question about the Li -> Li+ + e- half cell reaction in a LiB battery

Apr 6, 2019 · Replies 5 · Apr 10, 2019

Replies: 5

Views: 8K

Electron Configuration Question

Apr 6, 2019 · Replies 2 · Apr 9, 2019

Replies: 2

Views: 2K

Roommate hoopla, help identifying stuff in this garage please....

Apr 9, 2019 · Replies 3 · Apr 9, 2019

Replies: 3

Views: 2K

What Causes a Strange Liquid to Glow Blue When Disturbed?

Apr 5, 2019 · Replies 3 · Apr 5, 2019

Replies: 3

Views: 2K

Half-Reaction Explanations in a Simple Battery

Mar 30, 2019 · Replies 15 · Apr 5, 2019

Replies: 15

Views: 4K

The Definition Of Chemical Elements

Mar 27, 2019 · Replies 24 · Apr 4, 2019

Replies: 24

Views: 4K

Understanding luminol under ultrasound

Mar 29, 2019 · Replies 2 · Apr 1, 2019

Replies: 2

Views: 3K

Born-Oppenheimer approximation & distance

Mar 31, 2019 · Replies 1 · Apr 1, 2019

Replies: 1

Views: 1K

Using a nuclear warhead to expose large amount of limestone

Mar 22, 2019 · Replies 11 · Mar 27, 2019

Replies: 11

Views: 2K

Information on Different Systems of Units and Measurements

Mar 20, 2019 · Replies 9 · Mar 23, 2019

Replies: 9

Views: 2K

Why can we only measure energy (enthelpy) change?

Mar 16, 2019 · Replies 7 · Mar 22, 2019

Replies: 7

Views: 3K

Reduction in gas concentration of water with solutes

Mar 19, 2019 · Replies 4 · Mar 20, 2019

Replies: 4

Views: 2K

What are the Kcat,Km,Kcat/Km enzymology values?

Mar 16, 2019 · Replies 3 · Mar 17, 2019

Replies: 3

Views: 7K

How can I dissolve plant material without changing-

Mar 15, 2019 · Replies 3 · Mar 16, 2019

Replies: 3

Views: 3K

What are the materials and methods for testing plastic levels in water?

Feb 7, 2019 · Replies 5 · Mar 15, 2019

Replies: 5

Views: 3K

Difference between scotch and bourbon whisky and tequila

Dec 30, 2018 · Replies 9 · Mar 14, 2019

Replies: 9

Views: 5K

Predictive Abilities of Chemistry

Mar 12, 2019 · Replies 18 · Mar 13, 2019

Replies: 18

Views: 3K

Can glucose combine with sodium bicarbonate?

Mar 11, 2019 · Replies 5 · Mar 12, 2019

Replies: 5

Views: 3K

Can't wrap my head around buffers

Mar 9, 2019 · Replies 3 · Mar 10, 2019

Replies: 3

Views: 2K

What tutorial for Resonance structures?

Mar 9, 2019 · Replies 7 · Mar 10, 2019

Replies: 7

Views: 2K

Are all substitution reactions reversible?

Mar 7, 2019 · Replies 3 · Mar 9, 2019

Replies: 3

Views: 3K

Calculate the pH Slope using 7.0 and 10.0 buffers

Mar 8, 2019 · Replies 10 · Mar 9, 2019

Replies: 10

Views: 10K

Is neodymium powder as strong of a magnet as solid neodymium

Mar 2, 2019 · Replies 7 · Mar 8, 2019

Replies: 7

Views: 4K

Why do we have to memorize Lewis structures of ....

Mar 3, 2019 · Replies 1 · Mar 3, 2019

Replies: 1

Views: 2K

Understanding the Ionization of Salts

Feb 24, 2019 · Replies 17 · Mar 1, 2019

Replies: 17

Views: 4K

How Has the Periodic Table Changed Over its 150 Year History?

Feb 27, 2019 · Replies 3 · Mar 1, 2019

Replies: 3

Views: 4K

Help converting the NIST spectrogram of Calcium

Feb 19, 2019 · Replies 3 · Feb 20, 2019

Replies: 3

Views: 3K

Chemistry

Welcome to the Chemistry forum!

Chemistry is the scientific study of matter, its properties, composition, structure, and the changes it undergoes during chemical reactions. It plays a central role in understanding the building blocks of the universe, encompassing the study of atoms, molecules, elements, and compounds.

Chemists investigate the interactions and forces between particles at the atomic and molecular levels, contributing to our understanding of various natural phenomena. The field is divided into branches such as organic chemistry, inorganic chemistry, physical chemistry, and biochemistry, each focusing on specific aspects of chemical systems.

Chemistry is not only a foundational science but also a driving force behind technological advancements, materials development, pharmaceuticals, and numerous industrial applications.

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