I will list them from alkaline with the lowest boiling point and alkaline with the highest.
1. C2H6
2. C9H20
3. C11H24
4. C16H34
5. C20H42
6. C32H66
7. C150H302
I have taken a quiz similar to this before and can assure you this is correct and is primarily because of the number of Carbons and Hydrogens within this. More Carbons and Hydrogens causes Boiling Points to increase because of stronger bonds.
B.should be *columnar, but C.Circular is the answer
Answer:
pH =6.70
Explanation:
When Kw = 1x10^-14
[H3O+] = [OH-] --> 1x10-7
Kw =3.98x^10-14
3.98x^10-14 = [H3O+] . [OH-]
√ (3.98x^10-14) = [H3O+] = [OH-]
[H3O+] = 1.99×10^-7
- log [H3O+] = pH ---> -log 1.99x10^-7 = 6.70
Answer:
5.7 × 10⁻³
Explanation:
3.51 - 2.94 = 0.57
Don't change the scientific notation.
0.57 × 10⁻²
BUT
The "0" is not applicable so move the decimal point to the right by one and subtract the power by one.
5.7 × 10⁻²⁻¹ = 5.7 × 10⁻³
Explanation:
Given -
molar mass = 135.13 g/mol
To Find -
Solution:
we know that -
- molecular mass = n × empirical mass
So,
Here empirical mass =
12.01 + 1.008 + 14.01 = 27.028
Then,
135.13 = n × 27.028
n = 4.99 ≈ 5
We know that,
- molecular formula = n × empirical formula
Then,
molecular formula = 5(CHN)
= C₅H₅N₅
Therefore,
Option A is correct✔
