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daser333 [38]
3 years ago
10

According to the following reaction, how many grams of water are

Chemistry
1 answer:
slamgirl [31]3 years ago
6 0

Answer:

H2O = (1×2) + ( 1×16)

2+ 16

= 18

<u>22.9</u>

18

1.27

I don't know this answer is right or wrong.

so please ask it from your another friend.

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How will the volume of a gas be affected if the pressure is tripled, but the temperature remains the same?
dangina [55]

Answer:

Volume of the gass will decrease by three times of the original volume

Explanation:

Volume is inversly propotional to the pressure applied on it.

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What occurs as two atoms of fluorine combine to become a molecule of fluorine?
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When two atoms of Florine combines, they share an electron pair to complete it's octet. This result is formation of single bond between two fluorine atoms. This process is exothermic in nature, and hence, heat is liberated during the process of bond formation.  <span />
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Which component of a plant makes the cell walls around plant cells tough and allows branches, stems, and leaves to be strong
Vsevolod [243]
<h3><u>Answer;</u></h3>

Cellulose

<h3><u>Explanation</u>;</h3>
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  • <em><u>It  is an important organic molecule due to its strong structure which provides a wide variety of functions. </u></em>
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3 years ago
Choose all the right answers. Select three options.
DochEvi [55]

Answer:

Okay

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Hope this helps <3

5 0
3 years ago
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How many joules of heat must be absorbed by 500g h2O @ 50CELCIUS to convert to steam @ 120 celcius?
nadya68 [22]

Answer:

Q = 1267720 J

Explanation:

  • Qt = QH2O + ΔHv

∴ QH2O = mCpΔT

∴ m H2O = 500 g

∴ Cp H2O = 4.186 J/g°C = 4.183 E-3 KJ/g°C

∴ ΔT = 120 - 50 = 70°C

⇒ QH2O = (500 g)(4.183 E-3 KJ/g°C)(70°C) = 146.51 KJ

∴ ΔHv H2O = 40.7 KJ/mol

moles H2O:

∴ mm H2O = 18.015 g/mol

⇒ moles H2O = (500 g)(mol/18.015 g) = 27.548 mol H2O

⇒ ΔHv H2O = (40.7 KJ/mol)(27.548 mol) = 1121.21 KJ

⇒ Qt = 146.51 KJ + 1121.21 KJ = 1267.72 KJ = 1267720 J

5 0
3 years ago
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