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Chem 210 KSU Exam 1 Questions & Answers 100% Accurate.
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What is the chemical symbol for an atom that has 29 protons and 36 neutrons? A) Cu B) Kr C) N D) Tb E) S - ANSWERA) Cu How many SO2 molecules are there in 1.80 mol of SO2? A) 1.08 X 10^23 molecules SO2 B) 6.02 x 10^24 molecules SO2 C) 1.80 x 10^24 molecules SO2 D) 1.08 x 10^24 molecules SO2 E) 6.02 x 10^23 molecules SO2 - ANSWERD) 1.08 x 10^24 1.80 mol SO2 X 6.022x10^23 SP2 moles/1 mol SO2 = D One of the choices below, which one is NOT an ionic compound? (Molecular Compound) A) PCl5 B) MoCl6 C) RbCl D) PbCl2 E) NaCl - ANSWERA) PCl5 P: Non-metal Cl: Non-metal Which compounds do not have the same empirical formula? A) C2H2, C6H6 B) CO, CO2 C) C2H4, C3H6
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