HESI A2 CHEMISTRY V1-V2 EDITED FILES (2020 - 2021) | Already Graded A

HESI CHEMISTRY V1/V2

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?

This study source was downloaded by 100000832361371 from qwivy.com on 07-11-2022 02:59:26 GMT -05:00

https://www.qwivy.com/file/64230888/HESI-CHEMISTRY-V1V2-EDITED-2-29-2020-2docx/

HESI A2 CHEMISTRY QUESTIONS AND

ANSWERS- VI/V2