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Westkost [7]
3 years ago
9

Which phrases describe the oceans? Check all that apply.

Chemistry
1 answer:
leva [86]3 years ago
5 0

Answer:

the first one is the answer

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An analysis reveals that a substance consists of 26.7% of carbon, 2.24% of hydrogen and 71.1% of oxygen, If the molar mass of th
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 the   molecular  formula    is  calculated  as  follows 
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that  is   for  carbon = 26.7/12=  2.23  moles
                   hydrogen=  2.24/1=2.24  moles
                 oxygen=  71.1/16=4.44  moles
find  the   mole  ratio  of  each  element
that  is  divide  all  moles  by  the  smallest  mole(  2.23)

for  carbon=2.23/2.23=1,
  hydrogen =  2.24/2,23=1
  oxygen= 4.44/2.23=  2
the   empirical  formula  = CHO2
therefore  the  molecular  formula=(CHO2)n=270.1
                 { ( 12x 1)  + 1x1) +(16x2)}n=270.1
45n=270.1 
n=6
molecular  formula  is  therefore=(CHO2)6=C6H6O12

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3 years ago
If electrons are collectively compressed into a very small volume (e.g., within the core of a dying white dwarf star) where quan
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Answer:  A degenerate pressure will generate a large force to repel further  compression.

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Evaporation occurs when water molecules at the surface of a pool have enough kinetic energy that the attractive forces holding them to the liquid can be overcome

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AuB4O7 name<br> Element i need help
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