Question

station 4
chemical formulas
which of the following contains the
most number of elements?

a. calcium carbonate
b. rust
c. baking soda
d. magnesium oxide
q1

Explanation:

Step1: Count elements in Calcium Carbonate ($CaCO_3$)

Calcium ($Ca$), Carbon ($C$), Oxygen ($O$). Total of 3 elements.

Step2: Count elements in Rust ($Fe_2O_3$)

Iron ($Fe$), Oxygen ($O$). Total of 2 elements.

Step3: Count elements in Baking Soda ($NaHCO_3$)

Sodium ($Na$), Hydrogen ($H$), Carbon ($C$), Oxygen ($O$). Total of 4 elements.

Step4: Count elements in Magnesium Oxide ($MgO$)

Magnesium ($Mg$), Oxygen ($O$). Total of 2 elements.

Answer:

C. Baking Soda