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NISA [10]
3 years ago
6

What happens ????????

Chemistry
2 answers:
Lemur [1.5K]3 years ago
6 0

The air pressure changes

ivolga24 [154]3 years ago
5 0
Correct me if I wrong but I think it's "c"
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If the % acetic acid listed on a vinegar bottle is 4%, what is the implied uncertainty of the acetic acid concentration
Tom [10]

Answer:

This question appears incomplete

Explanation:

This question appears incomplete because the data provided only makes it possible to calculate the certainty of the acetic acid content per total volume of the vinegar. Thus, the 4% means for every 100 mL of the vinegar, there is 4 mL of acetic acid present. To calculate the volume of acetic acid in any other volume of vinegar, the formula will be

volume of acetic acid = 4/100 × total volume of vinegar

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2 years ago
Is temperature beginning to rise a physical or chemical change?
Lelu [443]

Answer:

If temperature increases, as it does in most reactions, a chemical change is likely to be occurring. This is different from the physical temperature change. During a physical temperature change, one substance, such as water is being heated.

Explanation:

6 0
3 years ago
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Using your knowledge of chemistry and the information in Reference Table H, which statement concerning propanone and water at 50
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The answer is (2) higher vapor pressure and weaker intermolecular forces. Propanone has a lower boiling point, so it is more volatile than water. Propanone's vapor pressure is, therefore, higher than that of water at 50 degrees Celsius. Propanone is more volatile due to the fact that the intermolecular forces that hold its molecuels together are not as strong as those that hold together molecules of water. Since the IMFs are weaker, it takes less thermal energy to break individual molecules free of each other.
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3 years ago
HELP ME PLEASEEE- 8th grade science
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Answer:

It's obviously <em><u>LIGHT</u></em><em><u> </u></em><em><u>ENERGY</u></em><em><u> </u></em><u>for</u><u> </u><u>me</u><u> </u><u>cuz</u><u> </u><u>it's</u><u> </u><u>from</u><u> </u><u>the</u><u> </u><u>flashl</u><u>ight</u><u>.</u><u>.</u>

Explanation:

Hope it helps you..

Your welcome in advance..

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3 0
2 years ago
10 atoms of aluminum reacts with 6 molecules of oxygen gas to produce aluminum oxide. 4 Al + 3 O2 ––&gt; 2 Al2O3 What is the exc
Mrrafil [7]

The excess reactant is Aluminum.

<u>Explanation:</u>

We have to write the balanced equation as,

4 Al+ 3 O₂ → 2 Al₂O₃

According to the molar ratio 4: 3, from the given balanced equation, we can say that 4 atoms of Al reacted with 3 molecules of oxygen.

Given that 10 atoms of aluminum reacts with 6 molecules of oxygen, as per the ratio only 8 atoms of Aluminum is required to react with 6 molecules of oxygen, so excess reactant is Aluminum.

8 0
3 years ago
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