C. 7.1. Hydrochloric acid is prepared by bubbling hydrogen chloride gas through water. *Response times vary by subject and question complexity. Answer. 32.0. D. 71. mass of Cl2 = 2 * 35.45 (at mass of Cl) = 70.906 g/mol. 14.2. 1.20 x 1024 c. 6.022 x 10-23 d. 6.022 x 1023 e. None of the above 2, as indicated by its formula, Cl2.Chlorine is a diatomic molecule when it is an element. 2 Na + Cl2 --> 2 NaCl. If we talk about the chemical composition of the chlorine molecule, it consists of two atoms of chlorine attached by a covalent bond. Atomic Number of Chlorine. Chlorine is a non-metal. Note that chlorine gas settles most where it's released. Chlorine is a chemical element with atomic number 17 which means there are 17 protons and 17 electrons in the atomic structure.The chemical symbol for Chlorine is Cl. In 2005 in South Carolina freight train derailed, releasing an estimated 11,500 US gallons (44,000 l; 9,600 imp gal) of chlorine. Around 400ppm of chlorine gas, the person would have half an hour or so. Chlorine is in group 7 of the periodic table. Median response time is 34 minutes and may be longer for new subjects. A. The atomic mass is the mass of an atom. How many atoms are in 1.50 moles of fluorine gas? How many atoms of chlorine are in 1.00 mole of chlorine gas? 1.20 x 10-24 b. Mol. 2 moles of chlorine atoms are present in_____g of chlorine gas. One mole of oxygen gas has a mass of _____ g. 31.3. Two chlorine atoms will each share one electron to get a full outer shell and form a stable Cl 2 molecule. 1 Answer Anjali G Nov 7, 2016 #[7.10cancel(g Cl)][cancel(1"mol Cl")/(35.4527cancel"g Cl")][(6.02*10^23 "atoms Cl")/cancel(1"mol Cl")]# #approx 1.21*10^23# atoms of chlorine. That is, 1 mole of an element = 6.022 * 10^23 atoms Therefore; 1 mole of Chlorine = 6.022 * 10^23 atoms But since Chlorine gas is a molecule; 1 mole of Chlorine gas = 2 * 6.022 * 10^23 atoms But, molar mass of Chlorine gas = 70.906 g/mol Then; A chlorine atom has 7 electrons in its outer shell. 1000ppm and above, a few minutes is all it would take. a. 142. There have been many instances of mass chlorine gas poisonings in industrial accidents. Chlorine Compound of the Month: 8661 Taking Its Place on The Periodic Table . Atomic Mass of Chlorine. In 2014 chlorine was allegedly used in Kafr Zita, Syria. The geometry of the chlorine gas molecule is linear as it is a diatomic molecule. Calculate how many grams of chlorine gas are in 8.031 x 10 23 atoms of chlorine gas. Its molecular mass is calculated as. We know that 1 mole of an element contains atoms equivalent to the Avogadro's number, 6.022 * 10^23. 3.34 x 10^23 ... 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