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3 years ago

How does the molecular structure of a water molecule affect its polarity?

Physics

2 answers:

qaws [65]3 years ago

8 0

Answer:

The molecular structure of water makes water to be a polar compound

Explanation:

A polar compound is a compound that has two poles. In this case, water will have negative and positive poles.

When a water molecule is formed, the two atoms of hydrogen do not just stay any where they like. Rather, they attach to the top of the oxygen atom, like rabbit ears as shown in the attachment below.

The hydrogen atom is positively charged, while the oxygen atom is negatively charged. This gives water its unique polar nature.

The top of the water molecule which has the hydrogen is now positively charged.

The bottom part of the water molecule which has the oxygen atom exposed is negatively charged.

MA_775_DIABLO [31]3 years ago

4 0

Answer:

The polarity of water molecules means that molecules of water will stick to each other like when unlike charges attracts. This is called hydrogen bonding.

Polarity makes water a good solvent, gives it the ability to stick to itself (cohesion), stick to other substances (adhesion), and have surface tension (due to hydrogen bonding).

When the two hydrogen atoms bond with the oxygen, they attach to the top of the molecule. This molecular structure gives the water molecule polarity, or a lopsided electrical charge that attracts other atoms. The end of the molecule with the two hydrogen atoms is positively charged.

Explanation:

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The cylindrical tub of a dryer in a laundromat rotates counterclockwise about a horizontal axis at 41.5 rev/min as it dries the

frozen [14]

Answer:

$\theta = 49.81^0$

Explanation:

Given that:

$\omega = 41.5 \ rev/min\\\\\omega = 41.5 *\frac{1}{60}* 2 \pi\\\\\omega = 4.45 \ rad/s\\\\\\diameter = 0.748 m$

If we let the piece of the close lose contact at ∠θ;

Then ; from force balance;

we have:

$\\\\mg sin \theta = \frac{mv^2}{r}\\\\sin \theta = \frac{2v^2}{dg}\\\\\theta = sin^{-1} (\frac{2v^2}{dg})$

where;

$v = \frac{\omega d}{2}\\\\v = \frac{4.45 *0.748}{2}\\\\v = 1.6643\\\\v^2 = 2.77$

Again:

$\theta = sin^{-1}(\frac{2v^2}{dg})\\\\\theta = sin^{-1}( \frac{2*2.77}{0.74*9.8})\\\\\theta = 49.81^0$

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2 years ago

What is a situation where you can observe both kinetic and potential energy, shifting from one form to the other?

Novay_Z [31]

Answer:

when an object kept at some height and having some mass then ,when it falls down then shifting of energy takes place

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2 years ago

On that system is<br> In an isolated system, the net __<br> zero.

DedPeter [7]

Answer:

the net work is 0

Explanation:

in an isolated system, there is no energy entering or exiting the system, and since work is dependent on the change in energy (W = ΔE) , with no change in energy, there is no work done. the net work done on or by the system must be 0

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2 years ago

The power in a circuit is 2 W and the voltage is 20 VDC. What's the circuit current?

Aliun [14]

Answer:

Power in the circuit is 0.1 amp

Explanation:

The power in the circuit is given by the formula

P = V x I

Where P is Power, V is voltage supplied and I is current in circuit.

so, I = P/v

= 2/20

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1 year ago

All of the following are important reasons to take notes except.

jeka57 [31]

Its a waste of time, you have to not only write it down, but study it after too . other than that notes are great.

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3 years ago

Read 2 more answers