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prohojiy [21]
2 years ago
6

Photographs are taken of falling drops of two different liquids: Liquid X Liquid Y Note: the drops have identical volumes. Notic

e that the oncoming wind tends to flatten out each drop as it falls. What's different about liquids X and Y
Chemistry
1 answer:
aliina [53]2 years ago
7 0

Answer:

See explanation

Explanation:

The reason why the droplets are spherical is  the surface area to volume ratio of the falling droplet in a gravitational field. Recall that a sphere has a small surface area to volume ratio.

Between X and Y, one key difference that will define the rate at which the two drops of liquid falls is the viscosity of the fluid. Since the images were not attached, I can not really tell what liquid droplet is more flatter  than the other.

However, the liquid with a greater surface tension will form larger droplets and experience a greater air resistance as the droplet falls. Hence the less the surface tension, the flatter the droplets. Cohesive forces pull molecules of a liquid droplets inwards leading to a more spherical shape and reducing the surface area. Surface tension is therefore the reason why liquids form droplets.

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3 years ago
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Answer : The enthalpy change for the reaction is 1043 kJ/mol.

Explanation :

The given chemical reaction is:

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As we know that:

The enthalpy change of reaction = E(bonds broken) - E(bonds formed)

\Delta H=[(2\times B.E_{C\equiv O})+(1\times B.E_{O\equiv O})]-[2\times B.E_{C=O}]

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Now put all the given values in the above expression, we get:

\Delta H=[(2\times 1074kJ/mol)+(1\times 499kJ/mol)]-[2\times 802kJ/mol]

\Delta H=1043kJ/mol

Therefore, the enthalpy change for the reaction is 1043 kJ/mol.

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3 years ago
What is the mass, in grams, of two liters of water?
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