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In-s [12.5K]
2 years ago
12

When you knock on a door, what causes you to hear a sound?

Chemistry
1 answer:
I am Lyosha [343]2 years ago
3 0

Answer: B.

Explanation:

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What else is produced when sodium carbonate decomposes?
alexdok [17]

Sodium oxide and carbon dioxide

Explanation:

When sodium carbonate decomposes sodium oxide and carbon dioxide is produced:

                          Na₂CO₃ → Na₂O + CO₂

  • This kind of reaction is known as decomposition reaction.
  • In a decomposition reaction,
  • In this kind of reaction, two or more products form from a single reactant.
  • The breakdown of a compound into its component individual elements or other compounds falls into this reaction category.

Learn more:

Thermal decomposition brainly.com/question/11181911

#learnwithBrainly

8 0
2 years ago
What is the pH if the [H+] concentration is 3 x10^-13​
Shkiper50 [21]

Answer:

pH = 12.52

Explanation:

Given that,

The [H+] concentration is 3\times 10^{-13}.

We need to find its pH.

We know that, the definition of pH is as follows :

pH=-log[H^+]

Put all the values,

pH=-log[3\times 10^{-13}]\\\\pH=12.52

So, the pH is 12.52.

6 0
3 years ago
What happens to a water bottle in a freezer and why
Andrews [41]
The water well begin to freeze and turn into soild. why? because the temperature of the the freezer is getting the water bottle cold so when that cold temperature hits that that bottle which has liquid in it so you should know that when liquid is into cold air it well so be soild so when you put the water bottle in the freezer it will be soild. 
and also remember gas - liquid - soild gas change to liquid by hot air  and liuid change to soild by clod air 
hoped i helped 
5 0
3 years ago
If you were to take several random samples from a pure substance the samples
Nataliya [291]
Would all have the same ratio of elements.
3 0
3 years ago
Read 2 more answers
Please helpppppppppppppppp!!!!!!!!!!!!!!!
Agata [3.3K]

Answer:

c MgO

Explanation:

product is located after the reaction arrow

8 0
2 years ago
Read 2 more answers
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