Why might sodium carbonate (washing soda, na2co3) be added to hard water to aid in cleaning?

Which of the following statements best describes what is happening in a water softening unit?

Which of the following statements best describes what is happening in a water softening unit ? The sodium is removed from the water , making the water interact less with the soap molecules. The hard ions are all trapped in the softener , which filets out all the ions.

Why is the surface area of a gecko’s foot so extensive?

Why is the surface area of a gecko’s foot so extensive ? The greater the surface area the greater the number of induced dipole-induced dipole forces of attraction that can occur between the gecko’s foot and the surface .

Which of the following is the strongest form of interatomic attraction?

Dipole-dipole interactions

How are interatomic forces and solubility related?

How are interatomic forces and solubility related ? Solubility depends on the solvent’s ability to overcome the intermolecular forces in a solid. Water molecules at the surface are pulled into the liquid, making it as small as possible.

What happens if I stop putting salt in water softener?

until the brine tank runs out of salt . If you forget to top off your water softener , the water softening resin will stay saturated. This brings the ion exchange to a screeching halt and allows hard water minerals into your pipes, fixtures and appliances.

Is Softened water OK to drink?

However, there has been no official verdict to state that drinking softened water is a problem and softened water is considered safe to drink . Most water softeners work by removing the minerals present in hard water , such as magnesium and calcium, through a process known as ion-exchange.

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How do geckos stick to surfaces?

Geckos can stick to surfaces because their bulbous toes are covered in hundreds of tiny microscopic hairs called setae. This type of physical bond happens when electrons from the gecko hair molecules and electrons from the wall molecules interact with each other and create an electromagnetic attraction.

Why does oxygen have such a low solubility in water?

Oxygen has such low solubility in water because it is a non-polar molecule and water is polar.

Why a lizard is able to walk on walls easily?

Lizards have pads on their feet. These pads consist of wide plates or scales and are present below their fingers and toes. Thus while walking or running on horizontal or vertical walls , a lizard curls and uncurls its toes thus creating a suction pressure which enables it to cling on to the walls .

What are the 3 intermolecular forces from weakest to strongest?

There are three different types of intermolecular forces in terms of strength. They are (strongest to weakest) hydrogen bonding , dipole-dipole and Van der Waals’ forces .

Why is hydrogen bonding the strongest?

Greater electronegativity of the hydrogen bond acceptor will lead to an increase in hydrogen – bond strength. The hydrogen bond is one of the strongest intermolecular attractions, but weaker than a covalent or an ionic bond . Hydrogen bonds are responsible for holding together DNA, proteins, and other macromolecules.

How do you know which intermolecular forces are strong?

Properties like melting and boiling points are a measure of how strong the attractive forces are between individual atoms or molecules. (We call these intermolecular forces – forces between molecules, as opposed to intramolecular forces – forces within a molecule. )

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Why is water the strongest intermolecular force?

One property of water is that it has strong intermolecular forces as a result of hydrogen bonding and the dipole moments created by the strong electronegative oxygen and the hydrogen. The energy required to break these bonds accounts for the relatively high melting point of water .

Which liquid tested has the strongest intermolecular forces?

The alcohol with the weakest intermolecular forces is methanol because methanol has the smallest molecular weight of the alcohols . 3) Of the alkanes studied, n-Hexane has the strongest intermolecular forces of attraction.

What has the strongest intermolecular forces solid liquid or gas?

Solids have the strongest intermolecular forces between molecules and it is these forces which hold the molecules in a rigid shape. In a liquid the intermolecular forces are continuously breaking and reforming as the molecules move and slide over each other.

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