Chemistry Exam Review #2

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•
Chemistry
•
9th - 12th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a transition element?
Back
Transition elements are metallic elements that have partially filled d orbitals. They are found in the d-block of the periodic table and include elements like iron, copper, and nickel.
2.
FLASHCARD QUESTION
Front
What is the electron configuration for iron (Fe)?
Back
The electron configuration for iron (Fe) is 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁶.
3.
FLASHCARD QUESTION
Front
How do you calculate percent by mass of an element in a compound?
Back
Percent by mass = (mass of element in 1 mole of compound / molar mass of compound) x 100%.
4.
FLASHCARD QUESTION
Front
What is the molar mass of Fe₂O₃?
Back
The molar mass of Fe₂O₃ is approximately 159.69 g/mol.
5.
FLASHCARD QUESTION
Front
What is the formula for calculating partial pressure in a gas mixture?
Back
Partial pressure = Total pressure - Sum of the partial pressures of other gases.
6.
FLASHCARD QUESTION
Front
What is the ideal gas law equation?
Back
The ideal gas law is PV = nRT, where P is pressure, V is volume, n is number of moles, R is the ideal gas constant, and T is temperature in Kelvin.
7.
FLASHCARD QUESTION
Front
What is the chemical formula for calcium nitrate?
Back
The chemical formula for calcium nitrate is Ca(NO₃)₂.
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