Moist air density

Fuming hquid stable at ambient temperatures but hydrolyzed on exposure to moist air density 1.125 g/mL refractive index 1.348 solidifies at -60.4°C bods at 125.7°C flash point (open cup) 147°F (68.8°C) decomposes in water. 

The hexahydrate is red monoclinic crystal deliquescent in moist air density 1.87 g/cm3 decomposes at 55°C, losing three molecules of water decomposes to green cobalt(II) oxide on further heating at 74°C very soluble in water (134 g/lOOmL at 0°C) also soluble in alcohols and acetone. 

The anhydrous form constitutes yellow to brown monoclinic crystals. It is hygroscopic forms dihydrate on exposure to moist air density 3.40 g/cm melts around 630°C with decomposition soluble in water, ethanol and acetone. 

The anhydrous fluoride is a white crystalline sohd monoclinic crystals turns blue in moist air density 4.23 g/cm melts at 836°C vaporizes at 1,676°C sparingly soluble in water (hydrolyzes in hot water). The dihydrate is blue monoclinic crystal density 2.934 g/cm decomposes at 130°C slightly soluble in water. 

Colorless monoclinic crystals hygroscopic decomposes slowly in moist air density 1.67 g/cm at 17°C melts at 151°C (decomposes) highly soluble in water (84g/100g at 20°C) soluble in lower alcohols and glycols pH of 0.1 molar solution 3.4. 

Colorless gas very pungent odor fumes heavily in moist air density of the gas 4.69 g/L heavier than air, density in air 3.5 (air = 1) sublimes at -95.7°C solidifies at -90.2°C (under pressure) critical pressure 50atm decomposes in water forming silicic acid and hydrofluoric acid. 

Equation (5.16) gives the physical meaning of the virtual temperature. This is a temperature, which could be attributed to the air heated at the same pressure and temperature by a latent heat, which is released during the condensation of all the water vapours contained in it. The virtual temperature is always greater than T. Thus, the moist air density is always lower than that of the dry air. 

Silvery white metal hard and brittle tarnishes slowly in moist air density 6.68 mp 630 C (1166°F) bp 1635°C (2975°F) attacked by hot concentrated acid. 

The density of moist air depends upon the temperature, the humidity, and the barometric pressure. It is expressed by the equation... 

Zinc is a whitish metal with a bluish hue. As an electropositive metal, it readily gives up its two outer electrons located in the N shell as it combines with nonmetal elements. Zinc foil will ignite in moist air, and zinc shavings and powder react violently with acids. Zinc s melting point is 419.58°C, its boiling point is 907°C, and its density is 7.14 g/cm. ... 

White crystalline solid, hexagonal odor of ammonia in moist air suhhmes at 2000°C melts in N2 atmosphere over 2200°C density 3.26 g/cm decomposes in water, alkahes and acids... 

Colorless gas pungent suffocating odor density 2.975 g/L fumes in moist air liquefies at -101°C sohdifies at -126.8° vapor pressure at -128°C is 57.8 torr critical temperature -12.2°C critical pressure 49.15 atm critical volume 115 cm3/mol soluble in water with partial hydrolysis solubdity in water at 0°C 332 g/lOOg also soluble in benzene, toluene, hexane, chloroform and methylene chloride soluble in anhydrous concentrated sulfuric acid. 

Pure compound is white cubic crystal or powder impure or luminous calcium sulfide is pale yellow to light gray bitter taste odor of H2S in moist air hygroscopic refractive index 2.137 hardness 4.0 Mohs density 2.59 g/cm melts at 2,525°C slightly soluble in water insoluble in alcohol soluble in acids with decomposition. 

Blue leaflets turns pink in moist air hygroscopic the dihydrate is violet blue crystal the hexahydrate is pink monochnic crystal density 3.36, 2.48 and 1.92 g/cm for anhydrous salt, dihydrate and hexahydrate, respectively anhydrous salt melts at 740°C and vaporizes at 1,049°C vapor pressure 60 torr at 801°C the hexahydrate decomposes at 87°C the anhydrous salt and the hydrates are aU soluble in water, ethanol, acetone, and ether the solubility of hydrates in water is greater than the anhydrous salt. 

Colorless gas fumes in moist air pungent acrid odor nonflammable heavier than air density 2.71 (air=1.0) gas density 3.55 g/L at 25°C liquefies at -66.4°C solidifies at -86.8°C critical temperature 89.8°C critical pressure 84.5 atm highly soluble in water (saturated aqueous solution contains 66% HBr at 25°C) forms a constant-boiling azeotrope at 47.5% HBr in solution, boiling at 126°C at atmospheric pressure soluble in alcohol a O.IOM aqueous solution is 93% ionized to H and Br ions at 18°C. 

White tetragonal crystals density 6.7 g/cm melts at about 600°C hydrolyzes readily when exposed to moist air. 

White orthorhombic crystals density 0.67 g/cm decomposes in moist air melts at 268°C decomposes at 380°C reacts with water dissolves in ether, tetrahydrofuran, and diethylamine solubility in ether, 25g/L at 25°C. 

Yellow monoclinic crystals deliquesces density 2.75 g/cm decomposes in moist air with the evolution of HCl melts at 204.7°C vaporizes at 254°C decomposes in water soluble in alcohol, hydrochloric acid, chloroform and carbon tetrachloride. 

White cubic crystals hygroscopic density 1.07 g/cm decomposes slowly at about 400° C in vacuum or in moist air soluble in water, decomposing and evolving hydrogen also soluble in alcohols, liquid ammonia, amines and pyridine. 

Silvery-gray metal slowly tarnishes in moist air crystallizes in hexagonal close-packed structure density 11.49 g/cm (calculated) melts at 2,172°C vaporizes at 4,265°C Young s (elastic) modulus 3.76 x 10 kg/cm Poisson s ratio 0.293 thermal neutron absorption cross-section 22 barns superconductor below 11°K insoluble in water and hydrochloric acid dissolves in nitric acid, concentrated sulfuric acid and aqua regia. 

The fluoride is a colourless gas which fumes in moist air and has a pungent, unpleasant odour, recalling that of carbonyl chloride. It condenses at —30° C. to a liquid which on further cooling gives a solid of m.pt. —110° C. Its vapour density corresponds with the formula SOF2. It is soluble in arsenic chloride, ether, benzene and turpentine. 

The chloride is a red, mobile liquid, with a suffocating odour. It has a density of 1-5085 at 15° C., and boils at 73-5° C. It fumes in moist air and is decomposed by water or alkalis, forming carbonic and hydrochloric acids or their salts and hydrogen sulphide. 

Selenious acid is a crystalline solid having a density of 3-00 at 15° C.10 The crystals are deliquescent in moist air, whilst in dry air they gradually lose their combined water, with the formation of the dioxide this loss of water is accelerated by heat. The acid is very soluble in water, solutions of it being obtained if selenium is oxidised in the presence of water.11... 

The tetra-iodide forms small, brilliant, black crystals, having a density of 5-05 at 15° C. When heated above 100° C. it dissociates into tellurium and iodine. When dissolved in excess of iodine it appeal s probable that part of the iodide is in a bimolecular condition.6 It is unattacked by moist air, but is slowly decomposed by cold water, and on warming, hydrolysis occurs with the formation of an oxy-iodide of uncertain composition on boiling with water complete hydrolysis to hydrogen iodide is effected 7... 

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