Comprehensive List of Chemical Elements and Their Properties

Posted by admin on Jan 25, 2025 in Chemistry | 0 comments

Atomic	Atomic Mass	Group	Period
Actinium	Ac	89	[227] [1]	7
Aluminum	Al	13	26.981538 (2)	13	3
Americium	Am	95	[243] [1]	7
Antimony	Sb	51	121.760 (1) [2]	15	5
Argon	Ar	18	39.948 (1) [2] [3]	18	3
Arsenic	As	33	74.92160 (2)	15	4
Astatine	At	85	[210] [1]	17	6
Sulfur	S	16	32.065 (5) [2] [3]	16	3
Barium	Ba	56	137.327 (7)	2	6
Berkelium	Bk	97	[247] [1]	7
Beryllium	Be	4	9.012182 (3)	2	2
Bismuth	Bi	83	208.98038 (2)	15	6
Bohrium	Bh	107	[264] [1]	7	7
Boron	B	5	10.811 (7) [2] [4] [3]	13	2
Bromine	Br	35	79.904 (1)	17	4
Cadmium	Cd	48	112.411 (8) [2]	12	5
Calcium	Ca	20	40.078 (4) [2]	2	4
Californium	Cf	98	[251] [1]	7
Carbon	C	6	12.

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EDTA, Chemical Formulas, and Boiler Cleaning Calculations

Posted by admin on Jan 25, 2025 in Chemistry | 0 comments

Conversions and Miscellaneous Formulas

• 1 Cubic foot = 7.48 gallons
• Cubic feet = Length x Width x Height
• PSI = Elevation x 0.433
• 1 PSI = 2.31 Feet
• 454 grams per pound
• Grams to Pounds: grams x 0.0022046
• Liters to Gallons: Liters x 0.26417

Nitrogen Displacement

Volume in gallons x 0.134 = SCF N2 needed to displace a vessel

EDTA

Molecular weight = 292

Dividing the molecular weight of EDTA acid by the atomic weight of the metal being complexed will result in obtaining the required amount of EDTA necessary to complex

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Key Concepts in Physical Chemistry: Distribution, Tension, and More

Posted by admin on Jan 24, 2025 in Chemistry | 0 comments

Question 1: Nernst Distribution Law

Nernst Distribution Law describes the distribution of a solute between two immiscible liquids. It states that the ratio of the concentrations of the solute in the two liquids is constant at a given temperature. Limitations include non-ideal behavior, and modifications include the distribution coefficient.

Question 2: Surface Tension

Surface tension is a measure of the energy at the surface of a liquid. Classification includes:

• Liquid-liquid
• Liquid-gas
• Liquid-solid

Methods

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Organic Compounds: Structure, Nomenclature, Isomerism, and Hydrocarbons

Posted by admin on Jan 23, 2025 in Chemistry | 0 comments

Organic Compounds: Key Concepts

Most organic compounds contain six main elements: C, H, O, N, S, and P.

Characteristics of the Carbon Atom

• Valence of 4 (forms 2 single bonds in CH₂ and CO).
• Capable of forming long chains: C-C-C-C…
• Forms single (C-C), double (C=C), and triple (C≡C) bonds.
• Single bonds: tetrahedral geometry (109.5°).
• Double bonds: planar geometry (120°).
• Triple bonds: linear geometry (180°).
• Bond Energies: E_triple > E_double > E_single.
• Reactivity: C≡C > C=C > C-C

Carbon Chain

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Understanding Potential Temperature, Vapor Pressure, and Latent Heat

Posted by admin on Jan 23, 2025 in Chemistry | 0 comments

Potential Temperature

The equation relating temperature and pressure for an adiabatic process is known as the Poisson equation: T₀ / T = (p₀ / p)^{R / C_p}

From the Poisson equation, considering that if p₀ = 1000 hPa, then T₀ = Θ as: Θ = T (1000 / p)^{R / C_p}, where Θ is defined as the potential temperature.

Potential Temperature: The temperature a mass of air would acquire if it is carried through adiabatic compression or expansion (i.e., if the air mass moves up or down) to the pressure level of 1000

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Radioisotopes: Medical and Industrial Applications

Posted by admin on Jan 22, 2025 in Chemistry | 0 comments

Tracers

Radioisotopes are used as tracers in various applications, including:

• Medical diagnostics: Tracers are used to investigate a patient’s body without surgery. Beta or gamma emitters, such as Technetium-99 and Iodine-123 (used to investigate the thyroid gland), are commonly employed.
• Environmental monitoring: Tracers help track the dispersal of waste materials.
• Industrial applications: Tracers can locate leaks or blockages in underground pipes.

Smoke Alarms

Many smoke detectors contain Americium-

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