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Lelu [443]
3 years ago
10

Is bubbles forming in water a chemical change

Chemistry
2 answers:
taurus [48]3 years ago
8 0
The processes of bubbles forming in water is an example of a chemical change, as assuming we are talking about liquid water, water itself is not undergoing a change in state. This is a chemical reaction that is occurring within water and resulting in oxygen gas most likely being produced and as a result bubbles forming.
Stolb23 [73]3 years ago
7 0
It is a physical change

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A prototype is usually different from the final product
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The molecular formula<br>of oxide of silicon​
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Answer:

true

Explanation:

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Balance the following equation:<br>sodium + Sodium Nitrate = Sodium Oxide + Nitrogen
-Dominant- [34]
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6 0
2 years ago
BEST GETS BRAINLIEST!!
tatuchka [14]
Gee.  I'll have to guess at what's "commonly thought".

One thing is the scale.  Nobody has an accurate picture of the scale in
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Example:
Shrink the solar system and everything in it so that the Sun
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-- The shrunken Jupiter is a 'huge' gas giant almost 0.1 inch in diameter.
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-- The shrunken Uranus is another gas giant, about 0.035 inch in diameter.
It's orbiting the sun, about 165 feet away from it.

-- The nearest star outside of the solar system is 441 MILES away !
On the same shrunken scale !
And there's NOTHING between here and there !  

I think that's the biggest point to make about the REAL solar system ...
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Same for its mass:  The solar system is approximately nothing but a star.
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Book ... It's getting late, Hillary's fading, and that's all I can think of.
I hope this much is some help.
3 0
3 years ago
If 42.8 mL of 0.204 M HCl solution is needed to neutralize a solution of Ca(OH)2, how many grams of Ca(OH)2 must be in the solut
Aneli [31]

Hey There!

At neutralisation moles of H⁺ from HCl  = moles of OH⁻ from Ca(OH)2  so :

0.204 * 42.8 / 1000  => 0.0087312 moles

Moles of Ca(OH)2 :

2 HCl + Ca(OH)2 = CaCl2 + 2 H2O

0.0087312 / 2 => 0.0043656 moles (  since each Ca(OH)2 ives 2 OH⁻ ions )

Therefore:

Molar mass Ca(OH)2 = 74.1 g/mol

mass = moles of Ca(OH)2 * molar mass

mass =  0.0043656 * 74.1

mass = 0.32 g of Ca(OH)2


Hope that helps!

6 0
3 years ago
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