1) What is the objective of this experiment? (name of the experiment Atomic Absorption and Emission)
A) to create a calibration curve and solve for an unknown concentration of an element.
B) To illustrate the principles of emission and absorption.
C) All are correct.
D) to introduce Beer's Law.
2) Which of the following is NOT correct regarding electromagnetic radiation?
A) The energy of light is directly proportional to the frequency.
B) The speed of light is a constant number: 3 x 10^8 m/sec.
C) The speed of light equals the product of wavelength and frequency.
D) Longer wavelengths equal larger energies
3) Which of the following is NOT correct regarding the Bohr model of the atom?
A) Electrons in interior orbitals have a higher energy and those in the outter orbitals have lower energy.
B) It is a good model for the hydrogen atom but has shortcomings with more complex atoms.
C) When electrons absorb light, they are excited into the outter electron orbitals.
D) It is also called the 'planetary model'.
4) What is the molarity of a solution if 0.1044 moles of a chemical is dissolved in 789-mL of water?
5) Which of the following is NOT correct regarding Beer's Law?
A) Absorbance is directly proportional to concentration.
B) At high concentration, absorption and concentration do not have a linear relationship.
C) The molar absorptivity constant varies with the concentration of the solution.
D) As the concentration of a solution increases, the absorption of light increases.
1) What is the objective of this experiment? (name of the experiment Atomic Absorption and Emission)
A) to create a calibration curve and solve for an unknown concentration of an element.
B) To illustrate the principles of emission and absorption.
C) All are correct.
D) to introduce Beer's Law.
2) Which of the following is NOT correct regarding electromagnetic radiation?
A) The energy of light is directly proportional to the frequency.
B) The speed of light is a constant number: 3 x 10^8 m/sec.
C) The speed of light equals the product of wavelength and frequency.
D) Longer wavelengths equal larger energies
3) Which of the following is NOT correct regarding the Bohr model of the atom?
A) Electrons in interior orbitals have a higher energy and those in the outter orbitals have lower energy.
B) It is a good model for the hydrogen atom but has shortcomings with more complex atoms.
C) When electrons absorb light, they are excited into the outter electron orbitals.
D) It is also called the 'planetary model'.
4) What is the molarity of a solution if 0.1044 moles of a chemical is dissolved in 789-mL of water?
5) Which of the following is NOT correct regarding Beer's Law?
A) Absorbance is directly proportional to concentration.
B) At high concentration, absorption and concentration do not have a linear relationship.
C) The molar absorptivity constant varies with the concentration of the solution.
D) As the concentration of a solution increases, the absorption of light increases.
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