HESI CHEMISTRY V1/V2 QUESTIONS
AND ANSWERS WITH VERIFIED
SOLUTIONS
If Hydrogen is in a compound, what would its oxidation number be?
+1
What is the oxidation number of any simple ion?
The same as the charge of the ion
How many kilograms are in a pound?
0.453592 kg
What is the temperature for freezing point of water in Celsius?
0 degrees Celsius (32°F for Fahrenheit)
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)
What is the oxidation number of an element atom?
0
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)
, How many amino acids are in a dipeptide?
2
If Oxygen is in a compound, what would its oxidation number be?
-2
Which of the following pH values would lemon juice likely have?
2 because the lower the pH value, the more acidic
What is a pentose?
A 5 carbon sugar (Pent = 5) (ose = sugar)
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)
How many neutrons does carbon 14 have?
8 ( mass# - atomics # = neutrons) 14 - 6 = 8
How many protons does Potassium have?
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