Counting atoms
Flashcard
•
Chemistry
•
10th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the molecular formula for a compound with 3 carbon atoms, 5 hydrogen atoms, 3 nitrogen atoms, and 9 oxygen atoms?
Back
C₃H₅(NO₃)₃
2.
FLASHCARD QUESTION
Front
What is the number of hydrogen, sulfur, and oxygen atoms in sulfuric acid (H₂SO₄)?
Back
H = 2, S = 1, O = 4
3.
FLASHCARD QUESTION
Front
How many different elements are present in the molecule 3 NH₄C₂H₃O₂?
Back
4
4.
FLASHCARD QUESTION
Front
What do coefficients in chemical formulas do?
Back
Multiply EVERYTHING!
5.
FLASHCARD QUESTION
Front
What are the numbers found on the lower right-hand side of an element symbol called?
Back
Subscript
6.
FLASHCARD QUESTION
Front
What is a subscript in a chemical formula?
Back
A subscript indicates the number of atoms of an element in a molecule.
7.
FLASHCARD QUESTION
Front
How do you determine the total number of atoms in a molecule?
Back
Add the subscripts of all elements in the molecular formula.
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