Following its 1967 discussion of Ag, Cl, and Br, which were important in the chemical determination Different isotopes have different relative abundances,chlorine – 35 has a relative abundance of 75.76%,whereas chlorine – 37 has a relative abundance of 24.24%. So, the average atomic mass of chlorine = 35.4527 u . This is approximately the sum of the number of protons and neutrons in the nucleus. Where more than one isotope exists, the value given is the abundance weighted average. Chlorine -35 is about 3 times more abundant than chlorine – 37, the weighted average is closer to 35 than 37. Previous Question Next Question. The atomic mass or relative isotopic mass refers to the mass of a single particle, and therefore is tied to a certain specific isotope of an element. Naturally occurring isotopes This table shows information about naturally occuring isotopes , their atomic masses , their natural abundances , their nuclear spins , and their magnetic moments . Isotopes Atomic mass of Chlorine is 35.453 u. The molecular formula for Chlorine is Cl. The SI base unit for amount of substance is the mole. (ii) 1 mole of carbon is burnt in 16 g of dioxygen. About three quarters of all chlorine atoms have 18 neutrons, giving those atoms a mass number of 35. Chlorine In 1961, the Commission recommended Ar(Cl) = 35.453(1), based on the atomic weight of silver and on Ag/AgCl equivalent ratios determined chemically by many well-known authorities. 1 grams Chlorine is equal to 0.028206357713029 mole. In other words, in every 100 chlorine atoms, 75 atoms have a mass number of 35, and 25 atoms have a mass number of 37. Popular Questions of Class Chemistry. Note that rounding errors may occur, so always check … ››More information on molar mass and molecular weight. Large amounts of chlorine are used in many industrial processes, such as in the production of paper products, plastics, dyes, textiles, medicines, … Chlorine is commonly used as an antiseptic and is used to make drinking water safe and to treat swimming pools. The average atomic mass of the given sample of chlorine is 35.46 u. The isotope chlorine-35 has a mass of 34.96885 atomic mass units, and the isotope chlorine-37 has a mass of 36.96590 atomic mass units. Relative atomic mass The mass of an atom relative to that of carbon-12. In chemistry, the formula weight is a quantity computed by multiplying the atomic weight (in atomic mass units) of each element in a chemical formula by the number of atoms of that element present in the formula, then adding all of these products together. Q:-Calculate the amount of carbon dioxide that could be produced when (i) 1 mole of carbon is burnt in air. 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