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Hesi A2 Chemistry exam V1 & V2 latest 2023
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Hesi A2 Chemistry exam V1 & V2 latest 2023 Hesi A2 Chemistry exam V1 & V2 latest 2023 Hesi A2 Chemistry exam V1 & V2 latest 2023
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Hesi A2 Chemistry exam V1& V2 latest 2023
HESI 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 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? 98.6°F 18.Boiling point of water in °C? 100°C 19.Boiling point of water in °F? 212°F 20.0°K is equal to °C? -273°C 21.The term Amphoteric means? A substance that can act as both a base & acid 22.What is Kelvin based around? Absolute zero
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