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The density of salt is grams of cubic centimeters, and 1g of salt (NaCl) is cubic centimeters.
Salt (NaCl) Instant salt, also known as table salt, is one of the most important substances for human survival and the most commonly used seasoning in cooking. The main chemical component of salt is sodium chloride (NaCl).
Salts (NaCl) are ionic compounds. Pure sodium chloride crystal is a colorless transparent cubic crystal, due to the existence of impurities in general sodium chloride is a white cubic crystal or fine crystal powder, melting point 801, boiling point 1442, relative density of grams cubic centimeters, salty taste, easy to deliquescent when containing impurities; Soluble in water or glycerol, insoluble in ethanol, insoluble in hydrochloric acid, aqueous solution neutral and conductive. Sodium chloride in the solid state does not conduct electricity, but sodium chloride in its molten state conducts electricity.
According to the formula for calculating density: density = weight volume.
Volume = Weight Density = 1 cubic centimeter.
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1g of table salt is very little. If it's refined salt, there is 6g in a flat cap of a beer bottle.
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NaCl molecular weight, the amount of 1 gram of NaCl substance is 1, NaCl = Na+ + Cl-, 1 mol NaCl contains Na+ is 1mol, and 1 gram of NaCl contains Na+ The amount is 1, 23 g.
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A small spoon of the spoon in the ingredient box Remember the flat spoon.
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1g. A dime is a gram, so there is very little salt for the same kind.
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Sodium content of 1 gram of salt: 1000 mg 40 75 533 mg.
The main component of table salt is NaCl, the mass fraction of Na in NaCl.
For: 23 23 + 100% =
However, table salt contains a small amount of impurities, so the sodium content is less than ideal, and the sodium content in 1 gram of table salt is about 390 mg. If it is a low-sodium salt.
Due to the incorporation of other ingredients, the sodium content will be lower, about 60% of ordinary table salt.
Physical propertiesSodium is a silvery-white cube.
Structural metal, soft and light, can be cut with a knife, the density is smaller than water, g cm3, melting point, boiling hesun point. The new facet has a silvery-white luster, which becomes dark gray when oxidized and buried in the air, and has corrosion resistance. Sodium is a good conductor of heat and Zen chain electricity, with good magnetic permeability, and potassium-sodium alloy (liquid) is a nuclear reactor.
Thermal conductive agents. Sodium is also malleable.
The hardness is also low, soluble in mercury and liquid ammonia, and soluble in liquid ammonia to form a blue solution. Hardens at -20.
The above content reference: Encyclopedia - sodium.
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In general, 1 gram of salt contains sodium: 1000 mg 40 75 533 mg. The main ingredient of table salt is NaCl, and the mass fraction of Na in NaCl is:
23/(23+。However, table salt contains a small amount of impurities, so the sodium content is less than ideal, and the sodium content in 1 gram of table salt is about 390 mg. In the case of low-sodium salt, the sodium content will be lower due to the incorporation of other materials, which is about 60% of ordinary table salt.
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NaCl is table salt used in everyday life, but not in chemistry. NaCl is sodium chloride, and the table salt used in daily life is sodium chloride (NaCl), while salt in chemistry refers to a class of substances. So sodium chloride is not a salt.
Generally speaking, the definition of salt refers to a class of compounds in which metal ions or ammonium ions (NH4) are combined with acid ions (or non-metal ions), such as sodium chloride, calcium nitrate, ferrous sulfate and ammonium acetate, calcium sulfate, copper chloride, sodium acetate, etc.
Main Applications:
1. Catering. Sodium chloride produces a salty taste that humans can perceive and is a common seasoning. Table salt generally contains 97 to 99 per cent sodium chloride.
In addition, sea salt and freshly mined rock salt, mostly from prehistoric seas, contain trace amounts of rare elements that are often associated with health benefits.
2. Industry. Sodium chloride is the foundation of the inorganic heavy chemical industry, in which more salt is used than any other raw material [27]. Among them, the process that consumes the most salt is the chlor-alkali method, which prepares sodium hydroxide, chlorine and hydrogen by electrolysis of salt water, and metal sodium and chlorine by electrolysis of molten salt.
Chlorine is mainly used in the synthesis of chlorinated organic compounds (e.g., chlorofluorocarbons, polyvinyl chloride) and disinfection bleaching, while sodium hydroxide is widely used in inorganic chemicals and pulp treatment. Another process that consumes a large amount of salt is the ammonia-alkali method, which prepares sodium bicarbonate by injecting ammonia and carbon dioxide into the brine, and then produces sodium carbonate. Most of the sodium carbonate is used in the manufacture of glass.
3. Roads. For road de-icing, it is the main use of salt in addition to industrial production.
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Sodium chloride is not a salt.
Table salt is sodium chloride, while salt in chemistry refers to a class of substances. So sodium chloride is not a salt. Salt refers to a class of compounds in which metal ions or ammonium ions (NH4) are combined with acid ions (or non-metal ions), such as sodium chloride, calcium nitrate, ferrous sulfate and ammonium acetate, calcium sulfate, copper chloride, sodium acetate, etc.
Generally speaking, salt is the product of metathesis reaction, salt Xiaoyunsou reacts with salt to form new salt and new salt, salt and alkali react to form new salt and new alkali, salt and acid reaction to form new salt and new acid, such as sulfuric acid and sodium hydroxide.
Sodium sulfate and water are generated, sodium chloride reacts with silver nitrate to form silver chloride and sodium nitrate, etc., and other reactions can be used to form salts.
For example, in displacement reactions, the solution of soluble salts is conductive because there are ions in the solution that can swim freely, so they can be used as electrolytes.
Hydrochloric acid is not only an important product of salt chemical industry, but also an important raw material for the production of silicon materials, and salt is a kind of crystal.
Application areas of sodium chloride:
1. When electrolyzing sodium chloride aqueous solution, hydrogen and chlorine will be produced.
Chlorine has a wide range of applications in the chemical industry and can be used to synthesize polyvinyl chloride.
pesticides, hydrochloric acid, etc.
2. Sodium metal is prepared in the Dangsi method.
Sodium chloride and calcium chloride are melted by electrolysis.
The mixture of metal sodium is prepared. Calcium chloride is used as a flux to reduce the melting point of sodium chloride below 700. Calcium is not as reducible as sodium and does not introduce impurities.
3. Sodium chloride is necessary for many biological reactions, such as sodium chloride in a variety of solution formulations in molecular biology experiments, and most of the bacterial culture medium contains sodium chloride. At the same time, it is also made by ammonia-alkali soda ash.
when the raw materials. The above internal capacity reference: Encyclopedia - sodium chloride.
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NaCl is salt.
"Salt" is often used in everyday life to refer to table salt, and NACL is the main component of table salt.
In chemistry, "good as salt" refers to the ion crystal combination formed by the combination of anion and cation ions, and NaCl is formed by the combination of chloride ions and sodium ions, which is a type of salt. Socks deficiency (NaCl ≠ salt, but NaCl belongs to salt).
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200 g of sodium chlorideThe amount of matterBe.
Solution: Because the quantity of matter = mass molar mass.
Whereas, the mass of sodium chloride is 200 grams, and the molar mass of sodium chloride is gram mol.
Then the amount of the substance of sodium chloride = 200 grams of grams or punch finger moles = moles.
That is, the amount of 200g of sodium chloride substance is.
The formula for the quantity of matterThe mass possessed by a substance per unit of substance (the mass of 1 mol of a substance) is called the molar mass, that is, the relative atomic mass of 1 mol of the substance.
It is equivalent to the value of molar mass.
The relationship between the quantity (n), the mass (m) and the molar quantity (m) of the substance is: n=m m.
The above content judgment and reference: Encyclopedia - the amount of matter.
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The amount of substance: Na+ and Cl- are both 6 rents and shouts, and the quality of the disadvantage carries: Na+ osmotic grams, Cl- grams.
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NaOH removes Mg2+ and Ca2+, BaCl2 removes SO4 root, Ba2+ +SO4 2- === BaSO4 (precipitation) Na2CO3 is used to remove excess Ba2+ Ba2+ +CO3 2- === BaCO3 (precipitation) So using BaCl2 first, then Na2CO3, and vice versa has no effect.
Happy studying
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Add sodium hydroxide dropwise to generate precipitated magnesium hydroxide and calcium hydroxide Add barium chloride dropwise to remove sulfate Due to excessive sodium hydroxide dropwise, the solution also contains hydroxide Sodium carbonate is added dropwise to remove excess calcium ions
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