2022 HESI Chemistry A2 Exam With Answers (25 Solved Questions)

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CHEMISTRY 1. If Oxygen is in a compound, what would its oxidation number be? - 2 2. Which of the following pH values would lemon juice likely have? 2 because the lower the pH value, the more acidic 3. What is a pentose ? A 5 carbon sugar (Pent = 5) (dose = sugar) 4. What is the oxidation state of the Sulfur atom in Sulfuric Acid H 2 SO 4 ? 6 (each H is +1, each O is - 2. All charges have to add to 0. 2+S - 8=0, so S=6) 5. How many neutrons does carbon 14 have? 8 (mass# - atomics # = neutrons) 14 - 6 = 8 6. How many protons does Potassium have? 19 (same as the atomic number)
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