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Molar mass of C4H4 is 52.0746 g/mol

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Elemental composition of C4H4Element
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Sample reactions for C4H4
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C4H4 + O2 = CO2 + H2Ocombustion
Formula in Hill system is C4H4

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Computing molecular weight (molecular mass)

To calculate molecular weight of a chemical compound enter it"s formula, specify its isotope mass number after each element in square brackets.Examples of molecular weight computations: C<14>O<16>2, S<34>O<16>2.

Definitions of molecular mass, molecular weight, molar mass & molar weight

Molecular mass (molecular weight) is the mass of one molecule of a substance & is expressed in the unified atomic mass units (u). (1 u is equal to 1/12 the mass of one atom of carbon-12) Molar mass (molar weight) is the mass of one mole of a substance & is expressed in g/mol.Weights of atoms and isotopes are from NIST article.Related: Molecular weights of amino acidsmolecular weights calculated today Please let us know how we can improve this website app.
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CSID:10637133, http://www.dinnerbylany.com/Chemical-Structure.10637133.html (accessed 14:36, Jun 5, 2023)

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Density: 0.9±0.1 g/cm3
Boiling Point: 34.4±7.0 °C at 760 mm
Vapour Pressure: 542.3±0.0 mm
Hg at 25°C
Enthalpy of Vaporization: 26.8±0.8 k
Flash Point: -44.5±12.3 °C
Index of Refraction: 1.483
Molar Refractivity: 16.5±0.4 cm3
#H bond acceptors: 0
#H bond donors: 0
#Freely Rotating Bonds: 0
#Rule of 5 Violations: 0

D (p
H 5.5):
H 5.5):
H 5.5):
D (p
H 7.4):
H 7.4):
H 7.4):
Polar Surface Area: 0 Å2
Polarizability: 6.6±0.5 10-24cm3
Surface Tension: 32.2±5.0 dyne/cm
Molar Volume: 57.9±5.0 cm3

Predicted data is generated using the US Environmental Protection Agency�s EPISuite™

Log Octanol-Water Partition Coef (SRC): Log Kow (KOWWIN v1.67 estimate) = 1.48 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42): Boiling Pt (deg C): 48.41 (Adapted Stein & Brown method) Melting Pt (deg C): -45.96 (Mean or Weighted MP) VP(mm Hg,25 deg C): 325 (Mean VP of Antoine & Grain methods) Water Solubility Estimate from Log Kow (WSKOW v1.41): Water Solubility at 25 deg C (mg/L): 2159 log Kow used: 1.48 (estimated) no-melting pt equation used Water Sol Estimate from Fragments: Wat Sol (v1.01 est) = 5474.3 mg/L ECOSAR Class Program (ECOSAR v0.99h): Class(es) found: Neutral Organics Henrys Law Constant (25 deg C) : Bond Method : 4.74E-003 atm-m3/mole Group Method: 1.12E-003 atm-m3/mole Henrys LC : 1.032E-002 atm-m3/mole Log Octanol-Air Partition Coefficient (25 deg C) : Log Kow used: 1.48 (Kow
Win est) Log Kaw used: -0.713 (Henry
Win est) Log Koa (KOAWIN v1.10 estimate): 2.193 Log Koa (experimental database): None Probability of Rapid Biodegradation (BIOWIN v4.10): Biowin1 (Linear Model) : 0.7228 Biowin2 (Non-Linear Model) : 0.9063 Expert Survey Biodegradation Results: Biowin3 (Ultimate Survey Model): 3.0841 (weeks ) Biowin4 (Primary Survey Model) : 3.7726 (days ) MITI Biodegradation Probability: Biowin5 (MITI Linear Model) : 0.5967 Biowin6 (MITI Non-Linear Model): 0.8169 Anaerobic Biodegradation Probability: Biowin7 (Anaerobic Linear Model): 0.5961 Ready Biodegradability Prediction: YES Hydrocarbon Biodegradation (Bio
HCwin v1.01): LOG Bio
HC Half-Life (days) : 0.6673 Bio
HC Half-Life (days) : 4.6483 Sorption lớn aerosols (25 Dec C): Vapor pressure (liquid/subcooled): 4.31E+004 page authority (323 mm Hg) Log Koa (Koawin est ): 2.193 Kp (particle/gas partition coef. (m3/ug)): Mackay model : 6.97E-011 Octanol/air (Koa) model: 3.83E-011 Fraction sorbed khổng lồ airborne particulates (phi): Junge-Pankow model : 2.52E-009 Mackay model : 5.57E-009 Octanol/air (Koa) model: 3.06E-009 Atmospheric Oxidation (25 deg C) Win v1.92>: Hydroxyl Radicals Reaction: OVERALL OH Rate Constant = 27.6433 E-12 cm3/molecule-sec Half-Life = 0.387 Days (12-hr day; 1.5E6 OH/cm3) Half-Life = 4.643 Hrs Ozone Reaction: OVERALL Ozone Rate Constant = 0.003000 E-17 cm3/molecule-sec Half-Life = 382.000 Days (at 7E11 mol/cm3) Fraction sorbed to lớn airborne particulates (phi): 4.04E-009 (Junge,Mackay) Note: the sorbed fraction may be resistant to lớn atmospheric oxidation Soil Adsorption Coefficient (PCKOCWIN v1.66): Koc : 48.64 Log Koc: 1.687 Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) : Rate constants can NOT be estimated for this structure! Bioaccumulation Estimates from Log Kow (BCFWIN v2.17): Log BCF from regression-based method = 0.438 (BCF = 2.742) log Kow used: 1.48 (estimated) Volatilization from Water: Henry LC: 0.00112 atm-m3/mole (estimated by Group SAR Method) Half-Life from mã sản phẩm River: 1.114 hours Half-Life from mã sản phẩm Lake : 72.66 hours (3.028 days) Removal In Wastewater Treatment: Total removal: 33.00 percent Total biodegradation: 0.07 percent Total sludge adsorption: 1.38 percent Total to Air: 31.55 percent (using 10000 hr Bio P,A,S) màn chơi III Fugacity Model: Mass Amount Half-Life Emissions (percent) (hr) (kg/hr) Air 7.69 9.28 1000 Water 60.3 360 1000 Soil 31.9 720 1000 Sediment 0.142 3.24e+003 0 Persistence Time: 116 hr

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