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Bezzdna [24]
3 years ago
5

After spraying water on a waxed surface, a student notices that the water beads up to form many individual drops rather than bei

ng spread out evenly across the surface. What property of water causes it to bead up like this? A. the high boiling point of water B. the strong adhesion to other substances C. the high density of liquid water D. the ability to dissolve many other substances E. the strong cohesion between water molecules
Chemistry
1 answer:
PSYCHO15rus [73]3 years ago
8 0

The best answer would be:

E. The strong cohesion between water molecules.

Cohesion is the strong attraction between molecules of the same kind. Water has this property because of hydrogen. Hydrogen form strong bonds with each other which keep water molecules intact. When sprayed on a waxed surface they tend to bead because hydrogen bonds are more attracted to themselves, rather than the wax surface.

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Dmitriy789 [7]

Answer:

. A closed system allows only energy transfer but no transfer of mass. Example: a cup of coffee with a lid on it, or a simple water bottle. ... In reality, a perfectly isolated system does not exist, for instance hot water in a thermos flask cannot remain hot forever.

8 0
3 years ago
Write the chemical equation for phosporic acid, h3po4, is produced through a chemical reaction between tetraphosporus decoxide a
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P_{4}O_{10} + 6H_{2}O ---\ \textgreater \  4H_{3}PO_{4}
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Plz help me with this question, I am stuck
zhenek [66]

i only know that E is one of them

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Methane (CH4), is said to be the cleanest burning fossil fuel. When burned, it releases carbon dioxide gas and forms water. Usin
LiRa [457]

From the stoichiometry of the balanced reaction equation, the correct statement are;

  • For every 1 molecule of methane CH4 that reacts, 2 molecules of H2O are produced.
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  • For every 200 moles of methane (CH4) that reacts, 400 moles of H2O are produced.

<h3>What is combustion?</h3>

The term combustion refers to the burning of fossil fuels for the purpose of energy production. The equation for reaction is CH4 + 2O2 ---> CO2 + 2H2O.

Using this equation as shown, the true statements are;

  • For every 1 molecule of methane CH4 that reacts, 2 molecules of H2O are produced.
  • For every 20 grams of methane (CH4) that reacts, 40 grams of H2O are produced.
  • For every 200 moles of methane (CH4) that reacts, 400 moles of H2O are produced.

Learn more about combustion: brainly.com/question/15117038

3 0
2 years ago
Radium has a half-life of 1,620 years. In how many years will a 1 kg sample of radium decay and reduce to 0.125 kg of radium?
Tasya [4]
We can calculate years by using the half-life equation. It is expressed as:

A = Ao e^-kt

<span>where A is the amount left at t years, Ao is the initial concentration, and k is a constant.

</span>From the half-life data, we can calculate for k.

1/2(Ao) = Ao e^-k(1620)
<span>k = 4.28 x 10^-4
</span>
0.125 = 1 e^-<span>4.28 x 10^-4 (</span>t)
t = 4259 years
7 0
3 years ago
Read 2 more answers
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