if a compound has 7 total atoms is it 2NaOH, H2SO4, or 3CO2

Answer 1

To determine which of the compounds has a total of 7 atoms, we need to count the atoms in each one.

1. 2NaOH:

   • This indicates 2 moles of sodium hydroxide (NaOH).
   • Each NaOH contains 1 sodium (Na), 1 oxygen (O), and 1 hydrogen (H).
   • So, 2NaOH has:
     • 2 Na
     • 2 O
     • 2 H
   • Total: 2 + 2 + 2 = 6 atoms.

2. H2SO4:

   • This compound consists of:
     • 2 hydrogen (H)
     • 1 sulfur (S)
     • 4 oxygen (O)
   • Total: 2 + 1 + 4 = 7 atoms.

3. 3CO2:

   • This indicates 3 moles of carbon dioxide (CO2).
   • Each CO2 has 1 carbon (C) and 2 oxygen (O).
   • So, 3CO2 has:
     • 3 C
     • 6 O
   • Total: 3 + 6 = 9 atoms.

Based on the calculations, H2SO4 is the compound that has a total of 7 atoms.