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. 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. 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. 1 grams Chlorine is equal to 0.028206357713029 mole. 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. (ii) 1 mole of carbon is burnt in 16 g of dioxygen. The atomic weight of chlorine given on the periodic table is 35.47 u. About one quarter of all chlorine atoms have 20 neutrons, giving those atoms a mass number of 37. Previous Question Next Question. Atomic mass of Chlorine is 35.453 u. The SI base unit for amount of substance is the mole. Chlorine -35 is about 3 times more abundant than chlorine – 37, the weighted average is closer to 35 than 37. ››More information on molar mass and molecular weight. Chlorine (atomic number 17) is a yellowish-green toxic gas. 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. Given the information that 75.7771% of … Isotopes About three quarters of all chlorine atoms have 18 neutrons, giving those atoms a mass number of 35. Q:-Calculate the amount of carbon dioxide that could be produced when (i) 1 mole of carbon is burnt in air. Density is the mass of a substance that would fill 1 cm 3 at room temperature. The atomic mass is the mass of an atom. Popular Questions of Class Chemistry. 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%. Both Chlorine isotopes, Cl-35 and Cl-37, are used to study the toxicity of environmental pollutant and are usually supplied in the form of NaCl. The average atomic mass of the given sample of chlorine is 35.46 u. Note that rounding errors may occur, so always check … 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. Naturally occurring isotopes This table shows information about naturally occuring isotopes , their atomic masses , their natural abundances , their nuclear spins , and their magnetic moments . Where more than one isotope exists, the value given is the abundance weighted average. 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