An indicator shows where the endpoint of a titration is. Different indicators will change colors at different equivalence points. Phenolphthalein will change colors at around pH7.5 or so, and others like Methylene Blue will change around a pH of 6. Different titrations will have different pH's at different equivalence points.
It is quite easy:
1 cal = 4,1868 J
Solution is:
2930 kcal = 4,1868 * 2930 [kJ] = 12267,324 [kJ]
Answer:
i=1.62 .
Explanation:
Let, i be the Van't Hoff Factor.
Moles of benzamide,=
Molality of solution, m=
Now, we know
Depression in freezing point, 
.....1
It is given that,
Putting all these values we get,
Now, moles of ammonium chloride=
molality =
Putting all these values in eqn 1.
We get,
i=1.62 .
Hence, this is the required solution.
Answer:
C. C₆H₁₄
General Formulas and Concepts:
<u>Chemistry - Atomic Structure</u>
Explanation:
To find the molecular formula of the model, you simply count and add up the same elements together.
We see that we have 6 carbons and 14 hydrogens. Therefore our answer is C. C₆H₁₄
