Counting atoms

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

Front

What is the number of hydrogen, sulfur, and oxygen atoms in sulfuric acid (H₂SO₄)?

Back

H = 2, S = 1, O = 4

Front

How many different elements are present in the molecule 3 NH₄C₂H₃O₂?

Back

4

Front

What do coefficients in chemical formulas do?

Back

Multiply EVERYTHING!

Front

What are the numbers found on the lower right-hand side of an element symbol called?

Back

Subscript

Front

What is a subscript in a chemical formula?

Back

A subscript indicates the number of atoms of an element in a molecule.

Front

How do you determine the total number of atoms in a molecule?

Back

Add the subscripts of all elements in the molecular formula.

Front

What is the difference between a coefficient and a subscript?

Back

A coefficient multiplies the entire molecule, while a subscript indicates the number of atoms of a specific element.

Front

In the formula C₆H₁₂O₆, how many carbon atoms are there?

Back

6

Front

In the formula 2H₂O, how many total hydrogen atoms are present?

Back

4 (2 from each H₂O multiplied by the coefficient 2).