Answer:
D = 8 m
Explanation:
vol = πr² h/3
48π = πr² x 9/3
48π = 3πr²
r = sqrt (48/3)
r = 4 m
therefore the diameter D = 2r = 2 (4) = 8 m
The pH of the solution of aniline is; pH = 4.64
<h3>pH of aniline solution</h3>
According to the question;
- We are required to determine the hydrogen ion concentration, pH of the given aniline solution.
Since, the given Kb is kb = 4. 3 × 10⁻¹⁰.
Hence, it follows that;
On this note, the pH of aniline solution is;
pH = 4.64.
Ultimately, the pH of the aniline solution given is; 4.64
Read more on pH of solutions;
brainly.com/question/25639733
Hello, hope this helps
Answer:
D. Aqueducts
Explanation:
They constructed these to bring water to many services such as public baths and latrines. Let me know if have any questions about this.
Hello oddworld7836!

Factor the expression into an equivalent form 12y² - 75.


By observing the expression, we can see that, 3 is the only common factor in both the terms of the expression. So, take the common factor 3 out.

Now, look at (4y² - 25). They don't have any common factors but they appear in the form of the algebraic identity ⇨ a² - b² = (a + b) (a - b). Here,
- a² = 4, a = 2 (√a² = ✓4 = 2)
- b² = 25, b = 5 (√b² = ✓25 = 5)
So, the (4y² + 25) becomes...

Now, bring the 3 (common factor) & rewrite the complete expression.

We can't further simplify it. Also, remember that the simplified form of an expression is equivalent to the expression. So, 3 (2y - 5) (2y + 5) is equivalent to 12y² - 75.
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Hope it'll help you!
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I don't know, backflips? I'm just naming a random trick.