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Chemistry Cumulative Exam Questions With Correct Answers
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Chemistry Cumulative Exam Questions With Correct Answers What is the ratio of Fe ions to O ions in a neutral compound? - ANSWER : 2:3 What does it mean that valence electrons in a metal are delocalized? - ANSWER : The valence electrons move between atoms in shared orbitals. Consider the reaction Which statement is true at STP? (The atomic mass of Mg is 24.31 u.) - ANSWER : (3 24.31) g of Mg produce (3 22.4) L of H2 gas. Several substances are labeled on the pH scale below Which substance has the lowest [H+] concentration but is still considered an acid? - ANSWER : milk
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