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Vlada [557]
3 years ago
5

Calculate the mass percent of a solution prepared by dissolving 17.2 g of NaCl in

Chemistry
2 answers:
GuDViN [60]3 years ago
8 0
Yes it was very fun to walk in the park
Ede4ka [16]3 years ago
3 0
Idkdkdjhrhkalalejehhdbfjfnb
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Can matter be created or<br> destroyed?<br><br> Yes or No
anzhelika [568]

Answer:

No

Explanation:

The same amount of matter is present before and after chemical and physical changes. Matter cannot be created or destroyed

5 0
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A pH scale has how many sections on it?
leva [86]

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0-14

Explanation:

3 0
3 years ago
Answer questions 2 and 3
nlexa [21]

Answer:

2:a-heterogenous

b-homogenous

c-heterogenous

d-heterogenous with water

3:Filtration is used to separate insoluble particles from a solution

Distillation is used to separate liquids with close but different boiling points e.g water and ethanol

Explanation:

2: homogenous mixtures form a uniform layer meaning that a mixture containing more than one layer is heterogenous

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3 years ago
What is the definition of quanititative observation
sukhopar [10]

Answer:

Quantitative observation is an objective collection of data which is primarily focused on numbers and values.

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How is the wavelength of an electromagnetic wave related to the energy of the wave?
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The equation that relates both energy and wavelength is:

e=\frac{h*c}{lambda}

where e is the energy and lambda is the wavelength.

Therefore, as we can see from this equation, the energy of an electromagnetic wave is inversely related to the wavelength of the electromagnetic wave.

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