<u>Answer:</u> The concentration of
comes out to be 0.16 M.
<u>Explanation:</u>
To calculate the concentration of acid, we use the equation given by neutralization reaction:

where,
are the n-factor, molarity and volume of acid which is 
are the n-factor, molarity and volume of base which is NaOH.
We are given:

Putting values in above equation, we get:

Hence, the concentration of
comes out to be 0.1862 M.
Answer:
C. Air Temp 77F Dew-point 19F
Explanation:
The further the separation between the temperature and the dew-point allows for a drier object.
Ecosystem, i believe
an ecosystem is made up of both biotic (i.e. the bacteria, fungi, etc) and abiotic things (i.e. the stones and dead leaves.) whereas community is the living things.
Answer:
The answer to your question is 4
Explanation:
Chemical reaction
C₂H₆ + O₂ ⇒ CO₂ + H₂O
Reactants Elements Products
2 Carbon 1
6 Hydrogen 2
2 Oxygen 3
Balanced chemical reaction
2C₂H₆ + 7O₂ ⇒ 4CO₂ + 6H₂O
Reactants Elements Products
4 Carbon 4
12 Hydrogen 12
14 Oxygen 14
When the reaction is balanced the coefficient for CO₂ is 4.
Molarity= moles/Volume => 9/15 = 0.6 mol/L