Question

4mg(oh)₂
3zn(no₃)₂
2nh₄cl
c₆h₁₂o₆
chemical formula
number of
elements
number of atoms
of each element
total number of
atoms

Explanation:

For \(4Mg(OH)_2\):

Step1: Identify elements

Elements are \(Mg\), \(O\), \(H\).

Step2: Calculate number of each element

• \(Mg\): \(4\times1 = 4\)
• \(O\): \(4\times2 = 8\)
• \(H\): \(4\times2 = 8\)

Step3: Calculate total atoms

\(4 + 8+8=20\)

For \(3Zn(NO_3)_2\):

Step1: Identify elements

Elements are \(Zn\), \(N\), \(O\).

Step2: Calculate number of each element

• \(Zn\): \(3\times1 = 3\)
• \(N\): \(3\times2 = 6\)
• \(O\): \(3\times(3\times2)=18\)

Step3: Calculate total atoms

\(3 + 6+18 = 27\)

For \(2NH_4Cl\):

Step1: Identify elements

Elements are \(N\), \(H\), \(Cl\).

Step2: Calculate number of each element

• \(N\): \(2\times1 = 2\)
• \(H\): \(2\times4 = 8\)
• \(Cl\): \(2\times1 = 2\)

Step3: Calculate total atoms

\(2+8 + 2=12\)

For \(C_6H_{12}O_6\):

Step1: Identify elements

Elements are \(C\), \(H\), \(O\).

Step2: Calculate number of each element

• \(C\): \(6\)
• \(H\): \(12\)
• \(O\): \(6\)

Step3: Calculate total atoms

\(6+12 + 6=24\)

Answer:

Chemical Formula	Number of elements	Number of atoms of each element	Total Number of Atoms
\(3Zn(NO_3)_2\)	\(3\) (\(Zn\), \(N\), \(O\))	\(Zn:3\), \(N:6\), \(O:18\)	\(27\)
\(2NH_4Cl\)	\(3\) (\(N\), \(H\), \(Cl\))	\(N:2\), \(H:8\), \(Cl:2\)	\(12\)
\(C_6H_{12}O_6\)	\(3\) (\(C\), \(H\), \(O\))	\(C:6\), \(H:12\), \(O:6\)	\(24\)