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Which two molecules are compounds?

A. [tex]$NaHCO _3$[/tex]
B. [tex]$O _3$[/tex]
C. [tex]$Cl _2$[/tex]
D. [tex]$C _8 H _{18}$[/tex]

Sagot :

GinnyAnswer
Certainly! Let's go through each of the given molecules to determine which ones are compounds.

1. NaHCO₃ (Sodium Bicarbonate):
- Sodium bicarbonate is composed of more than one type of atom: sodium (Na), hydrogen (H), carbon (C), and oxygen (O).
- Since it is made up of different elements, it qualifies as a compound.

2. O₃ (Ozone):
- Ozone consists of only oxygen atoms.
- Since it is made up of just one element, it is not considered a compound.

3. Cl₂ (Chlorine gas):
- Chlorine gas consists of only chlorine atoms.
- Since it contains only one type of element, it is not a compound.

4. C₈H₁₈ (Octane):
- Octane is composed of more than one type of atom: carbon (C) and hydrogen (H).
- Since it is made up of different elements, it qualifies as a compound.

Given this information, the molecules that are compounds are:

- NaHCO₃
- C₈H₁₈

So the correct answers are:

NaHCO₃ and C₈H₁₈

In a list format with their positions:
2) NaHCO₃
4) C₈H₁₈

Therefore, the positions of the compounds in the given list are (2, 4).
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