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natima [27]
3 years ago
13

Water can resist a greater external force than ethanol can. Which statement best describes this difference? Water has less capil

lary action than ethanol. Water has greater capillary action than ethanol. Water has lower surface tension than ethanol. Water has greater surface tension than ethanol.
Chemistry
2 answers:
ikadub [295]3 years ago
3 0
<span>Water has greater surface tension than ethanol.

The external force is the impact by which an outer object has in contact with the object being described. The force that is stronger prevails in that collision. </span><span>Physical properties are those which can be measured or observed without altering the composition of matter.</span>
zheka24 [161]3 years ago
3 0

Water can resist a greater external force than ethanol can. Which statement best describes this difference?

anwser- (Water has greater surface tension than ethanol.)

<h3>I just took the test</h3>
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Determine the mass of CuSO4 • 5H20 that must be used to prepare 250mL of 2.01 M CuSO4(aq).
mario62 [17]

Given parameters:

Volume of CuSO₄ = 250mL

Concentration of CuSO₄ = 2.01M

Unknown:

Mass of CuSO₄.5H₂O = ?

To solve this problem, we must write the chemical relationship between both species.;

             CuSO₄.5H₂O  →   CuSO₄ + 5H₂O

Now that we know the expression, it is possible to solve for the unknown mass.

First find the number of moles of CuSO₄;

         Number of moles  = Concentration x Volume

Take 250mL to L so as to ensure uniformity of units;

           Volume  = 250 x 10⁻³L

  Input the parameters and solve for number of moles;

        Number of moles  = 250 x 10⁻³  x  2.01 = 0.5mol

From the equation;

             1 mole of CuSO₄ is produced from 1 mole of CuSO₄.5H₂O  

So  0.5 moles of CuSO₄ will be produced from 0.5 moles of CuSO₄.5H₂O

Now let us find the molar mass of CuSO₄.5H₂O = 63.6 + 32 + 4(16) + 5(2x1 + 16)  = 249.6g/mole

Mass of CuSO₄.5H₂O = number of moles x molar mass

                                      = 0.5 x 249.6

                                     = 124.8g

The mass of CuSO₄.5H₂O is 124.8g

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3 years ago
Please help quickly as possible thank you :) ​
WARRIOR [948]

Answer:

moving object transfers some to the stationary object causing it to move a it. remember that momentum is always conserved though - it is the same at the start before the event and after it.

Explanation:

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The correct answer is D
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D. It is the heat required to change a gram of substance from a liquid to a gas.

Explanation:

The heat of vaporization is the heat required to change a gram of substance from a liquid to a gas.

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