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kap26 [50]
3 years ago
14

Describe each of the following properties of water…

Chemistry
1 answer:
Allushta [10]3 years ago
5 0

Cohesion – The attraction of water molecules to each other and creates high surface tension in water. An example of how it helps support life on Earth is that it allows insects to walk across the surface.

Adhesion – The attraction of water molecules to other substances and allows water to travel against gravity. An example of this is water moving up a tree even when there is gravity.

Specific heat capacity – the heat required to raise the temperature of the unit mass of a given substance by a given amount. An example of this is a swimming pool staying the same temperature no matter if it is hot or cold outside.

Expansion upon freezing – Water expands when its frozen which will keep it from sinking. Floating ice keeps the water underneath it warm. An example of this is an iceberg floating on top of a body of water.

Universal solvent – Can dissolve almost anything, usually water. An example is that water transports important chemicals or nutrients/minerals that is needed for all living organisms.

I just learned about this lol...

Hope this helps UwU

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What is the mass of 19.5 moles of carbon dioxide?
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Explanation:

mass = moles * molar mass

molar mass of carbon dioxide (CO2) = 12+32 = 44

= 19.5* 44 = 858

proof

moles = mass /molar mass

= 858/44 = 19.5 moles

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valentinak56 [21]

Answer: The number of grams of H_2 in 1620 mL is 1.44 g

Explanation:

According to ideal gas equation:

PV=nRT

P = pressure of gas = 1 atm (at STP)

V = Volume of gas = 1620 ml = 1.62 L  (1L=1000ml)

n = number of moles = ?

R = gas constant =0.0821Latm/Kmol

T =temperature =273K

n=\frac{PV}{RT}

n=\frac{1atm\times 16.2L}{0.0821Latm/K mol\times 273K}=0.72moles

Mass of hydrogen =moles\times {\text {Molar mass}}=0.72mol\times 2g/mol=1.44g

The number of grams of H_2 in 1620 mL is 1.44 g

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