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Alja [10]
3 years ago
13

How do you know when a substance is boiling?

Chemistry
2 answers:
IrinaVladis [17]3 years ago
4 0
When the substance is creating gases. Sometimes when it’s bubbling up
Lunna [17]3 years ago
3 0

When you are boiling eggs for example the pot with water is hot and you can see bubbles in the pot. This is called boiling water. When the eggs are in there they are boiling to make hard boiled eggs. Depending on how long it is in there determines the outcome. On the surface of the egg shell you may also notice little bubbles all around the shell which means it is boiling.

Hope this helps! :3

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Hello guys can you help me on this.​
RideAnS [48]

Answer:

1.Sulfur dioxide and nitrogen oxide

2.a)it forms carbonic acid

b)

3.the community can use renewable energy like solar and wind power cause they produce less pollution

5 0
3 years ago
The pH of a 0.150 molar solution of a weak acid is 4.10. What is the pKa of the acid?
Kamila [148]
Answer: 4.21×10⁻⁸

Explanation:


1) Assume a general equation for the ionization of the weak acid:

Let HA be the weak acid, then the ionization equation is:

HA ⇄ H⁺ + A⁻

2) Then, the expression for the ionization constant is:

Ka = [H⁺][A⁻] / [HA]

There, [H⁺] = [A⁻], and [HA] = 0.150 M (data given)


3) So, you need to determine [H⁺] which you do from the pH.

By definition, pH = - log [H⁺]

And from the data given pH = 4.1


⇒ 4.10 = - log [H⁺] ⇒ [H⁺] = antilog (- 4.10) = 7.94×10⁻⁵

4) Now you have all the values to calculate the expression for Ka:

ka = 7.94×10⁻⁵ × 7.94×10⁻⁵ / 0.150 = 4.21×10⁻⁸
3 0
3 years ago
Read 2 more answers
Can Molecules be made up of more than one type of atom
slega [8]

Answer:

yes

Explanation:

molecule, a group of two or more atoms that form the smallest identifiable unit into which a pure substance

3 0
2 years ago
If a solution has virtually no hydrogen ions what type of ph does it have?
lora16 [44]
D. It has almost no hydrogen ions, therefore it is very basic.
7 0
3 years ago
Read 2 more answers
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kirill [66]
Well,





I guess the answer would be....


























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6 0
3 years ago
Read 2 more answers
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