CSU CHEM 103 EXAM 1 HELP
QUESTIONS ANSWERS WITH
COMPLETE SOLUTIONS 100%
CORRECT!!!
Q: What is the total atom count in one molecule of ethanol (C2H6O)
A: ✔️✔️ 9 (Calculated by adding 2 Carbon + 6 Hydrogen + 1 Oxygen atoms.)
Q: How many chemical bonds does an atom of Nitrogen typically form?
A: ✔️✔️ 3
Q: What is the standard number of bonds formed by an Oxygen atom?
A: ✔️✔️ 2
Q: How many bonds does a Carbon atom usually create in a stable
molecule?
A: ✔️✔️ 4
Q: In a neutral atom, how does the electron count relate to the proton
count?
A: ✔️✔️ The numbers are identical. (The negative charge of the electrons
perfectly balances the positive charge of the protons.)
Q: True or False: The number of neutrons in an atom must always match
the number of protons.
A: ✔️✔️ False. (While the number of protons defines the element, the number of
neutrons can vary, resulting in different isotopes.)
n the spring of 2010 an offshore oil rig in the Gulf of Mexico exploded
resulting in millions of gallons of crude oil to be spilled into the Gulf.
Dispersants such as Corexit or Dispersit were used in the clean up process.
These substances act similarly to soaps and detergents. Explain what these
molecules would do to oil spilled into the Gulf of Mexico. -ANSWER
✔️✔️They have a water soluble part and a greasy part. The greasy part interacts
with droplets of oil and because of the water soluble part the whole droplet
becomes soluble in water.
QUESTIONS ANSWERS WITH
COMPLETE SOLUTIONS 100%
CORRECT!!!
Q: What is the total atom count in one molecule of ethanol (C2H6O)
A: ✔️✔️ 9 (Calculated by adding 2 Carbon + 6 Hydrogen + 1 Oxygen atoms.)
Q: How many chemical bonds does an atom of Nitrogen typically form?
A: ✔️✔️ 3
Q: What is the standard number of bonds formed by an Oxygen atom?
A: ✔️✔️ 2
Q: How many bonds does a Carbon atom usually create in a stable
molecule?
A: ✔️✔️ 4
Q: In a neutral atom, how does the electron count relate to the proton
count?
A: ✔️✔️ The numbers are identical. (The negative charge of the electrons
perfectly balances the positive charge of the protons.)
Q: True or False: The number of neutrons in an atom must always match
the number of protons.
A: ✔️✔️ False. (While the number of protons defines the element, the number of
neutrons can vary, resulting in different isotopes.)
n the spring of 2010 an offshore oil rig in the Gulf of Mexico exploded
resulting in millions of gallons of crude oil to be spilled into the Gulf.
Dispersants such as Corexit or Dispersit were used in the clean up process.
These substances act similarly to soaps and detergents. Explain what these
molecules would do to oil spilled into the Gulf of Mexico. -ANSWER
✔️✔️They have a water soluble part and a greasy part. The greasy part interacts
with droplets of oil and because of the water soluble part the whole droplet
becomes soluble in water.
