Question

question 20 of 29
how many total atoms? (1.4 points)
extra content
ca(c2h3o2)2
a. 8
b. 10
c. 15
d. 17

Explanation:

Step1: Analyze each element

For \(Ca\): There is \(1\) \(Ca\) atom.
For \(C\): In \((C_{2}H_{3}O_{2})\), there are \(2\) \(C\) atoms, and since there are \(2\) \((C_{2}H_{3}O_{2})\) groups, the number of \(C\) atoms is \(2\times2 = 4\).
For \(H\): In \((C_{2}H_{3}O_{2})\), there are \(3\) \(H\) atoms, and with \(2\) \((C_{2}H_{3}O_{2})\) groups, the number of \(H\) atoms is \(3\times2=6\).
For \(O\): In \((C_{2}H_{3}O_{2})\), there are \(2\) \(O\) atoms, and for \(2\) \((C_{2}H_{3}O_{2})\) groups, the number of \(O\) atoms is \(2\times2 = 4\).

Step2: Calculate the total number of atoms

Add up the number of atoms of each element: \(1\) (from \(Ca\)) \(+4\) (from \(C\)) \(+6\) (from \(H\)) \(+4\) (from \(O\)) \(=15\).

Answer:

C. 15