What causes surface tension under water

1 answer:

4 0

Surface tension under water results from greater attraction of liquid molecules to each other, due to a process called cohesion, than to molecules in the air, due to a process called adhesion.

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Which of the following systems has potential energy only?

bagirrra123 [75]

Answer D

Explanation:

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2 years ago

Calculate the density of a material that has a mass of 50.5g and a volume of 14.5cm3.

White raven [17]

Density = mass / volume = 50.5/14.5 = 3.48 $g/cm ^{3}$ .

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3 years ago

marin [14]

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3 years ago

250 ml glass of lemon juice contains 20 grams of sugar. How much sugar is in 500 ml bottle

iren2701 [21]

There is 40 g of sugar in a 500 ml bottle of lemon juice

<h3>Further explanation</h3>

The concentration of a substance can be expressed in several quantities such as moles, percent (%) weight/volume,), molarity, molality, parts per million (ppm) or mole fraction. The concentration shows the amount of solute in a unit of the amount of solvent.

the concentration of sugar in lemon juice :

$\tt \dfrac{20~g}{250~ml}=0.08~g/ml$

So for 500 ml juice :

$\tt 500\times 0.08=40~g~sugar$

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3 years ago

If an atom gains an electron, what overall charge will it have?

Oliga [24]

Answer:

The atom will have a negative charge.

Explanation:

Electrons are subatomic particles with a negative charge, protons are subatomic particles with a negative charge, and neutrons have no charge. When a neutral atom's balance is disrupted by an extra electron, the atom becomes negatively charged.

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3 years ago

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