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3 years ago

15

What property of water molecules leads to high surface tension?

1 answer:

Vinvika [58]3 years ago

6 0

"<span>Cohesion" is the property of water molecules that leads to high surface tension.
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Surface tension is defined as the energy or the work required to increase the surface area of a liquid as a result of intermolecular forces.

In water molecules, the hydrogen ends, which are positive compared to oxygen ends, cause the water molecules to stick together, thus, increasing its surface tension.

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0.4 mole of ammonia results after 1.2 mole of nitrogen gas is combined with 1.8 mole of hydrogen gas in a 1.0 L flask. What is t

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Given the reaction represented by the balanced equation:

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Answer:

$mass of CHF_3 = 1/3 \times 9.47 \times 70 =220.97g$

Explanation:

$CH_4(g)+3F_2(g)->3HF(g)+CHF_3$

As given in the question that methane( $CH_4$ ) is taken excess amount

mass of $CHF_3$ depend only on mass of fluorine

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3 mole of $F_2$ gives 1 mole of $CHF_3$

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7 0

3 years ago

Bromine has two naturally occurring isotopes. Bromine-79 has a mass of 78.918 amu and is 50.69% abundant. Using the atomic mass

dsp73

Explanation:

Given parameters:

Mass of Br-79 = 78.918 amu

Abundance = 50.69%

Unknown:

Mass of Br - 81 = ?

Solution:

Relative Atomic mass of Br = 80

The proportion by which each fraction of an isotope occurs in nature is called the geonormal abundance.

RAM = Ma Ba + McBc

The formula above is used to find the average mass of the given isotopes.

Since we know the percentage abundance of Br-79, that of Br-81 = 100-50.69= 49.31%

RAM = Ma Ba + McBc

RAM = relative atomic mass

Ma Ba = mass and abundance of Br-79

McBc = mass and abundance of Br-81

80 = (78.918 x $\frac{50.69}{100}$ ) + ( $\frac{49.31}{100}$ x C)

80 = 40 + 0.49C

0.49C = 40

C = $\frac{40}{0.49}$ = 81.63amu

learn more;

Isotopes brainly.com/question/10862182

#learnwithBrainly

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3 years ago