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Hesi A2 Chemistry exam V1 & V2 latest 2023
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Hesi A2 Chemistry exam V1 & V2 latest 2023HESI CHEMISTRY V1/V2 (140 QUESTIONS AND
ANSWERS)
1. If Hydrogen is in a compound, what would its oxidation number be?
+1
2. What is the oxidation number of any simple ion?
The same as the charge of the ion
3. How many kilograms are in a pound?
0.453592 kg
4. What is the temperature for freezing point of water in Celsius?
0 degrees Celsius (32°F for Fahrenheit)
5. What is the conversion of Celsius to Fahrenheit?
5F=9C+160 (remember 5F because you have 5 fingers on a hand & 9C because
cats have 9 lives)
6. What is the oxidation number of an element atom?
0
7. What is the freezing point of sea water in Fahrenheit?
Below 0C (pick and answer choice around -2C, actual temp depends on how much
salt is in the water)
8. How many amino acids are in a dipeptide?
2
, Hesi A2 Chemistry exam V1 & V2 latest 2023
9. If Oxygen is in a compound, what would its oxidation number be?
-2
10. Which of the following pH values would lemon juice likely have?
2 because the lower the pH value, the more acidic
11. What is a pentose?
A 5 carbon sugar (Pent = 5) (ose = sugar)
12. What is the oxidation state of the Sulfur atom in Sulfuric Acid H2SO4?
6 (each H is +1, each O is -2. All charges have to add to 0. 2+S-8=0, so S=6)
13. How many neutrons does carbon 14 have?
8 ( mass# - atomics # = neutrons) 14 - 6 = 8
14. How many protons does Potassium have?
19 (same as the atomic number)
15. How many amino acids are essential for human life?
20 amino acids
16. Normal body temperature in °C?
37°C
17. Normal body temperature in °F?
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