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HESI CHEMISTRY QUESTIONS AND ANSWERS
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HESI CHEMISTRY QUESTIONS AND ANSWERS
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HESI CHEMISTRY QUESTIONS AND ANSWERSWhich of the following is not a state of matter?
A.Lattice
B. Liquid
C. Solid
D. Gas - Answers -A. lattice
For a given mass and constant temperature, an inverse relationship exists between the
volume and pressure of a gas?
A. Stefan-Boltzmann Law
B. Charles' Law
C. Boyle's Law
D. Ideal Gas Law - Answers -C. Boyle's Law
Nora makes soup by adding some spices to a pot of boiling water and stirring the spices
until completely dissolved. Next, she adds several chopped vegetables. What is the
solute in her mixture?
A. spices
B. water
C. vegetables
D. heat - Answers -A. spices
Cesium-137 has a half-life of 30 years. If a 2.0 g sample of cesium-137 decays over 120
years, how much would remain?
A. 0.125g
B. 0.5g
C. 0.25g
D. 1.4g - Answers -A. 0.125g
How many monosaccharides comprise an oligosaccharide?
A. Ten or more
B. One or two
C. Two
D. Three to six - Answers -D. Three to six
Using the Lewis-dot structure model, how many dots would carbon have?
A. 8
B. 6
C. 4
, D. 2 - Answers -C. 4
What is the molar mass of calcium if its atomic mass is 40 amu?
A. 20 grams/mole
B. 40 grams/mole
C. 80 grams/mole
D. 1 gram/mole - Answers -B. 40 grams/mole
In the formula C12H22O11C12H22O11, the 12 following the carbon represents 12 ____
of carbon.
A. atoms
B. neutrons
C. electrons
D. molecules - Answers -A. atoms
Which of these is not a component of lipids?
A. iron
B. oxygen
C. hydrogen
D. carbon - Answers -A. iron.
Chemically speaking, lipids are composed of primarily of carbon, hydrogen, and oxygen.
Which of these is a water-soluble vitamin?
A. vitamin K
B. vitamin E
C. vitamin D
D. vitamin C - Answers -D. vitamin C
A catalyst increases which of these in a chemical reaction?
A. energetic state
B. rate
C. activation energy
D. heat - Answers -B. rate
Bleaches, disinfectants, and salts often contain elements from which nonmetal group?
A. hydrogen
B. noble gases
C. halogens
D. actinides - Answers -C. halogens
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