Question

counting atoms task cards directions: using the chemical formula cards, count the number of atoms for each element in the formula. then calculate the total number of atoms in each formula. 13 al₂(so₄)₃ 14 ca(

Explanation:

Step1: Count Al atoms

Subscript directly follows Al: $2$

Step2: Count S atoms

Multiply subscripts: $1 \times 3 = 3$

Step3: Count O atoms

Multiply subscripts: $4 \times 3 = 12$

Step4: Calculate total atoms

Sum all atom counts: $2 + 3 + 12 = 17$

Answer:

• Aluminum (Al): 2 atoms
• Sulfur (S): 3 atoms
• Oxygen (O): 12 atoms
• Total atoms: 17

Note: The formula for card 14 is cut off, so only card 13 ($Al_2(SO_4)_3$) can be solved with the provided information.