Answer : The molar concentration of ethanol in the undiluted cognac is 8.44 M
Explanation :
Using neutralization law,
where,
= molar concentration of undiluted cognac = ?
= molar concentration of diluted cognac = 0.0844 M
= volume of undiluted cognac = 5.00 mL = 0.005 L
= volume of diluted cognac = 0.500 L
Now put all the given values in the above law, we get molar concentration of ethanol in the undiluted cognac.
Therefore, the molar concentration of ethanol in the undiluted cognac is 8.44 M
Answer:
Cell theory is a theory, not a law because the cell theory does not have enough support to become a law.
Answer:
B) It turns clear phenolphthalein pink.
Explanation:
KOH is a basic solution.
It turns red litmus paper turns blue.
It turns clear phenolphthalein pink.
The reagent which reacts with metals to form hydrogen gas is acid.
So, the right choice is:
B) It turns clear phenolphthalein pink.
Yes baking soda is dissolved in vinegar and bubbles appear is a CHEMICAL CHANGE .