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BARSIC [14]
2 years ago
13

1a. Review What holds the hydrogen and oxygen atoms together in a water molecule?

Chemistry
1 answer:
MrMuchimi2 years ago
6 0
Covalent bonds hold hydrogen and oxygen together.
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In transduction, the cochlea is part of this structure:and the retina is part of this structure:
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What is the vapor pressure of an aqueous solution made up of 60.0g of urea (CH4N2O) in 180g of water? the vapor pressure of wate
djyliett [7]
To get the answer you use the Law of Raoult.


Raoult's law states that the decrease of the vapor pressure of a liquid is proportional to the molar fraction of the solute.


ΔP = Pa * Xa


Here Pa = 0.038 atm


And Xa = N a / (Na + Nb), where Na is number of moles of A and Nb is number of moles of b


Na = mass of urea / molar mass of urea =  60 g / (molar mass of CH4N2O)


molar mass of CH4N2O = 12 g/mol + 4*1g/mol + 2*14 g/mol + 16 g/mol = 60 g/mol


Na = 60 g / 60 g/mol = 1 mol


Nb = mass of water / molar mass of water = 180g / 18g/mol = 10 mol


Xa = 1 mol / (10 mol + 1 mol) = 1/11 =0.09091


ΔP = Pb * Xa = 0.038 atm * 0.09091 =  0.0035 atm


Then, the final vapor pressure of water is Pb - ΔP = 0.038atm - 0.0035atm = 0.035 atm.


 Answer: 0.035 atm
7 0
3 years ago
how do I do this I’m confused
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by using pro.gram..

{\huge{\blue{\underline{\underline{ ═══════════}}}}}

{\huge{\pink{\underline{\underline{❑❑❑❑❑❑❑❑❑~}}}}}

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Which of the following is true about an abiotic resource?
aev [14]

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B. It is a nonliving resource.

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The definition of abiotic is "nonliving," and examples of abiotic resources may include soil or water.

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The property of metals to be made into wire is called
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Metal have some properties like lustrous (shiny), good conductors of electricity and heat,etc. Metals have another property by which metal can be drawn into a wire by hammering on it .This property is called as 'ductility'.

hope this helps, please mark brainliest. :)

6 0
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