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nika2105 [10]
3 years ago
5

Which process is a physical change?

Chemistry
2 answers:
kipiarov [429]3 years ago
6 0

Water boiling is a physical change. Physical changes do not change the substance's makeup; boiling, melting, and other changes in matter are physical because they do not alter the substance, while the other choices do change the chemical makeup of the substance.

Semenov [28]3 years ago
3 0
C is the correct answer
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Why does it seem to us as if rocks remain the same and don't change
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Most rocks that we encounter in our normal everyday lives are sedimentary rocks.  Sedimentary rocks are rocks that have been worn down gradually over long periods of time.  Because it takes very long periods of time (couple decades) for these rocks to change, it often seems as if they don't change at all, when in reality the change is too small for us to realize it!
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3 years ago
Using your own words define a scientific law
OleMash [197]
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Hope this helps!
4 0
3 years ago
2. Perception:
sineoko [7]

Answer:

D

Explanation:

Someone's perception can be all of these things. the way one person sees something is different than the way someone standing right beside them sees it.

4 0
3 years ago
What is the mole fraction of solute in a 3.19 m aqueous solution?
Bumek [7]
Molality= mol/ Kg

if we assume that we have 1 kg of water, we have 3.19 moles of solute. 

the formula for mole fraction --> mole fraction= mol of solule/ mol of solution

1) if we have 1 kg of water which is same as 1000 grams of water. 

2) we need to convert grams to moles using the molar mass of water 

molar mass of H₂O= (2 x 1.01) + 16.0 = 18.02 g/mol

1000 g (1 mol/ 18.02 grams)= 55.5 mol

3) mole of solution= 55.5 moles + 3.19 moles= 58.7 moles of solution

4) mole fraction= 3.19 / 58.7= 0.0543 
4 0
3 years ago
Using the diagram below, which rock layer is older than the Chinle Formation?
Klio2033 [76]

Answer:

moenkopi formation because layers further down are always older. think about it as a pile of laundry the clothes at the bottom of the pile were worn earlier in the week and are older and dirtier.

Explanation:

also pls mark brainliest <3 :)))

3 0
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