Question

The number of atoms in 3 molecules in Na2CO3.20H2O
a)36
b) 72
c)108
d)198
Give answer With Solution plz​

Answer 1

Answer:

198 is your answer don't forget to mark me as a brainalist and follow me

Answer 2

Answer:

HI MATE

HERE IS YOUR ANSWER

Percent composition by element

Element Symbol no. of Atoms

• of AtomsSodium Na 2
• 2Cobalt Co 3
• 3Hydrogen H 20
• 20Oxygen O 10

2 sodiums (Na) + 1 carbon (C) + 3 oxygens (O) -> subtotal 6 atoms

2 sodiums (Na) + 1 carbon (C) + 3 oxygens (O) -> subtotal 6 atoms10 H2O -> 20 hydrogen (H) + 10 oxygen (O) -> subtotal 30 atoms

2 sodiums (Na) + 1 carbon (C) + 3 oxygens (O) -> subtotal 6 atoms10 H2O -> 20 hydrogen (H) + 10 oxygen (O) -> subtotal 30 atomsTotal = 36 atoms

OPTION A -36.

IS CORRECT ANSWER.

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