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8 which ion contains exactly 20 protons and 18

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Unformatted text preview: 2 pm b. 8.32 mL and 8.32x106 µL c. 5.19 kg and 5.19x1012 ng d. All of the above measurements are identical e. None of the above measurements are identical 7. Which atom has the most number of neutrons? a. An atom with an atomic number of 28 and a mass number of 59 b. An atom of Manganese with a mass number of 55 c. Iron ­56 d. 52Cr e. All of the above have an equal number of neutrons. 8. Which ion contains exactly 20 protons and 18 electrons? a. K+ b. K– c. Ca2+ d. Ca2– e. None of the above 9. What compound forms between the most common ions of rubidium and sulfur? a. RbS b. Rb2S c. RbS2 d. RuS e. Ru2S Page 3 of 10 10. Which of the statements are true? a. HClO4 and K2SO4 are ionic compounds b. NO and N2O5 are binary compounds c. CH3CH2OH and C6H12O6 are molecular compounds d. Both b and c are correct e. All of the above are correct 11. Which of the following name ­formula pair(s) is/are INCORRECT? I. Fe2O3 = Iron(II) oxide II. Ca(OH)2 = calcium hydroxide III. Na2O2 = Sodium oxide IV. K2Cr2O7 = Potassium dichromate V. LiN3 = Lithium nitride a. III only b. I and II c. III and IV d. I, III, and V e. I, IV, and V 12. Which of the following compounds has the name cobalt(III) chlorite? a. Co3(ClO2)3 b. Co(ClO2)3 c. Co(ClO3)3 d. Co(ClO4)3 e. Co3(ClO4)3 13. Which pair of compounds are hexane and butanol, respectively? a. CH3CH2CH2CH2CH3 and CH3CH2CH2CH2OH b. CH3CH2CH2CH2CH2CH3 and CH3CH2CH2CH2CH2OH c. CH3CH2CH2CH2CH2CH2CH3 and CH3CH2CH2OH d. CH3CH2CH2CH2CH2CH3 and CH3CH2CH2CH2OH e. None of the above 14. Which acid is correctly named? a. Bromic acid = HBrO3 b. Phosphorous acid = H3PO3 c. Hydroiodic acid = HI d....
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