HESI EXAM CHEMISTRY

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HESI EXAM CHEMISTRY

Qs and Ans Expert- Explanation

This Exam contains:

-Guarantee passing score -17 Questions and Answers -format set of multiple-choice -Expert- Explanation

Question 1: How many protons does potassium (K) have?

• 39.08
• 32
• 19
• 13

Answer:

• 19

Question 2: How many amino acids are essential for human life?

• 20
• 22
• as many as 585
• amino acids are not essential for life

Answer:

• 20

Question 3: When two monosaccharides are joined together they make a:

• polysaccharide
• oligosaccharide
• disaccharide
• fat

Answer:

• disaccharide

Question 4: The reaction 2C2H6 (g) + 7O2 (g) -> 4CO2 (g) + 6H20 (g) is an example of:

• combustion
• double replacement
• single replacement
• decomposition

Answer:

• combustion

Question 5: Glycogen is:

• a plant starch
• a disaccharide
• an animal starch
• not a starch or a disaccharide

Answer:

• an animal starch

Question 6: A pentose is:

• pentateuch
• a 5 carbon sugar

• one of the bases of the base pairs in DNA and RNA
• found in DNA but not RNA

Answer:

• a 5 carbon sugar

Question 7: Amphoteric refers to the ability of water to be both a base and a peptide.True or False

Answer:

False Question 8: What would be the oxidation state of the sulfur atom in sulfuric acid, H2SO4?

• +4
• +5
• +6
• +8

Answer:

• +6

Question 9: How many neutrons does carbon 14 have?

• 6
• 7
• 8
• 9

Answer:

• 8

Question 10: The 3 in the power of 10^3 is called the:

• coefficient
• significand

• subscript
• exponent

Answer:

• exponent

Question 11: Gluconeogenesis is a process that produces:

• energy and ATP
• glucose from proteins and fats
• DNA and RNA
• fat from glucose and proteins

Answer:

• glucose from proteins and fats

Question 12: The nucleic acids DNA and RNA:

• are found in the cell nucleus
• are not found in the cell mitochondria
• contain different kinds of fat
• include very small molecules

Answer:

• are found in the cell nucleus

Question 13: What is the strongest type of chemical bond?

• covalent
• hydrogen
• ionic
• dipole interactions

Answer:

• covalent