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spayn [35]
3 years ago
12

Which question cannot be answered by science? (4 points)

Chemistry
2 answers:
disa [49]3 years ago
5 0

Answer:

i think one of them cannot be answred by science

ycow [4]3 years ago
3 0

Answer:

C

Explanation:

The option C question has not a specific answer related to pure science.

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Please help me with chemistry. Thanks
il63 [147K]
Constant:
Test tubes

Independent:
<span>volume of gas

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<span>amount of H2O2 </span>
7 0
4 years ago
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According to the phase diagram for water, how is the state of water determined?
joja [24]

Explanation:

From the attached phase diagram, one can easily make out the phase in which water exists. Matter generally exists in three physical states which are solid, liquid and gas. Water is a unique compound that can exists in these three states at a given temperature and pressure.

From the attached phase diagram,

  1. point O is the triple point where the three phases of pure substance co-exists.
  2. The areas between the curves points at a single phase of matter. Y is a water vapor.
  3. The lines on the curve denotes two equilibrium phases. For example; X is a phase contain ice and melt water.

Learn more:

brainly.com/question/1612862

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3 0
3 years ago
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The concentration of oxalate ion (C2O42-) in a sample can be determined by titration with a solution of permanganate ion (MnO4-)
zmey [24]

Answer:

0.3152 M

Explanation:

The reaction that takes place is:

  • 2MnO₄⁻ + 5C₂O₄⁻² + 16H⁺ → 2Mn⁺² + 8H₂O + 10CO₂

First we <u>calculate the MnO₄⁻ moles used up in the titration</u>, <em>by multiplying the volume times the concentration</em>:

  • 21.93 mL * 0.1725 M = 3.783 mmol MnO₄⁻

Then we <u>convert MnO₄⁻ moles to C₂O₄⁻² moles</u>:

  • 3.783 mmoles MnO₄⁻ * \frac{5mmolC_2O_4}{2mmolMnO_4}= 9.457 mmol C₂O₄⁻²

Finally we <u>calculate the oxalate ion concentration</u>,<em> by dividing the moles by the volume</em>:

  • 9.457 mmol C₂O₄⁻² / 30.00 mL = 0.3152 M
6 0
3 years ago
If 225 cal of heat is added to 15.0 g of 2-propanol at room temperature, 25ºC, the alcohol will reach a final temperature of ___
natima [27]

Explanation:

I have no idea about this

6 0
3 years ago
Preserved remains have turned to what?
Softa [21]

It depends on what the remains are. If you are looking for a word, it could either be fossils or if it is something that has preserved the soft tissue it can be described as mummified.
3 0
3 years ago
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