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Mrac [35]
3 years ago
13

Is water a polar molecule? Why or why not?

Biology
2 answers:
Maru [420]3 years ago
7 0

Explanation:

Water is a polar molecule. While the overall charge of the molecule is neutral, the orientation of the two positively charged hydrogens (+1 each) at one end and the negatively charged oxygen (-2) at the other end give it two poles

ser-zykov [4K]3 years ago
4 0

Answer: yes,

Water molecules are made of hydrogen and oxygen atoms

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5. Some undiluted acids are more corrosive when diluted
wlad13 [49]

Answer:

The correct answer is : due to the hydrogen ions reacts and release high amount of energy with the strong acid.

Explanation:

Diluted acids are more corrosive then undiluted due to the presence of more H+ ions than the undiluted acids. The More the H+ ions are added the more corrosive the acid is.

When water is mixed with strong acid the hydrogen ions reacts with acid ions and a exothermic reaction takes place that release high amount of energy which boils violently, to avoid any accident it is advised to lab workers to wipe  if any splash self before washing.

Thus, the correct answer is : due to the hydrogen ions reacts and release high amount of energy with the strong acid.

3 0
3 years ago
The population density of frogs in a portion of a pond is 12 frogs per square meter. The size of the entire pond is 370 square m
max2010maxim [7]

Given: The population density of frogs in a portion of a pond is 12 frogs per square meter. The size of the entire pond is 370 square meters.

To find: The total population size of the frogs in the pond.

Method: Using unitary method of proportions

Solution:

Let p be the density of the frogs present per square meter.

Let A denote the total area of the pond.

∴ p = 12 frogs/m² and A = 370 m²

The total number of frogs in the pond is given by,

p \times A = 12 \times 370 = 4440

Therefore, there are 4440 frogs in the pond.

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3 years ago
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Our diets are composed of protein, fat and carbohydrates. Digestive enzymes<span> break down protein, carbohydrates and fats into smaller and smaller components.</span>
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3 years ago
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The F2 generation phenotypes resulting from the monohybrid cross of purebreds display a ratio of _____. 4:1 2:1 3:1 none of the
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The correct answer is 3:1.
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A red blood cell has an internal salt concentration of 150mM. The cell is placed in a beaker of 500mM salt.(a) Assuming that the
tatyana61 [14]

Answer:

a) water will move from the cell into the beaker acroas the cell membrane

b) solutes will diffuse into the cell

Explanation:

a) Osmosis is the phenomenon that describes the movement of water from a region of low solute concentration (high water concentration) to a region of high solute concentration (low water concentration) across a semi-permeable membrane. In this case, since the inside of the cell contains a lesser concentration of solute (150mm), water containing dissolved solutes will move osmotically into the solution of the beaker, which has a higher concentration of solute (500mM) via the cell membrane (semi-permeable membrane).

b) Diffusion involves the movement of particles or molecules from a region where they are highly concentrated to a region where they are less concentrated. In this case, solutes/ions will diffuse from the beaker (outside the cell) containing 500mM of solute INTO THE CELL containing 150mM of solute.

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3 years ago
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