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iragen [17]
2 years ago
7

temperature usually increase when water condenses which behavior of water is most directly responsible for this phenomenon?

Chemistry
1 answer:
aniked [119]2 years ago
3 0

Answer:

Temperature usually increases when water condenses. What behavior of water is most directly responsible for this phenomenon? The release of heat by the formation of hydrogen bonds. Hydrogen bonds stabilize and keep the of ice farther apart than the water molecules of liquid water.

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A researcher is measuring changes in the density of the upper atmosphere over time. Which units should be used for the density m
valina [46]

Answer:

lbm/ft³ or psi/ft

Explanation:

The description in the question shows the density to measured is that of gases (upper atmosphere). The density of a gas can be described as the mass of the gas divided by the volume of the gas at a certain temperature and pressure. It's unit can be represented as lbm/ft³ or psi/ft.

NOTE:

"lbm" means "lean body mass" which is a unit for mass or weight and can be described as the pound mass

"psi" means "pound per square inch"; is also a unit for mass or weight

5 0
3 years ago
The following solutions are prepared by dissolving the requisite amount of solute in water to obtain the desired concentrations.
Mama L [17]

Answer:

CaCl₂ > CH₃OH = LiCl > C₆H₁₂O₆

Explanation:

The osmotic pressure of a compound is calculated using the following expression:

π = MRT (1)

This expression is used when the substance is nonelectrolyte. If the solution is electrolyte solution then we need to count the van't hoff factor into the expression so:

π = MRTi  (2)

Now, we have 4 solutions here, only two of them are electrolyte solution, this means that these solutions can be dissociated into separate ions. These solutions are LiCl and CaCl₂. It can be shown in the following reactions:

LiCl -------> Li⁺ + Cl⁻     2 ions   (i = 2)

CaCl₂ ---------> Ca²⁺ + 2Cl⁻      3 ions (i = 3)

The methanol (CH₃OH) and glucose (C₆H₁₂O₆) are non electrolyte solutions, therefore they are not dissociated. So, let's use expression (1) for methanol and glucose, and expression (2) for the salts:

CaCl₂:   π = 1 * 3 * RT = 3RT

CH₃OH:   π = 2 * RT = 2RT

C₆H₁₂O₆:  π = 1 * RT = 1RT

LiCl: π = 1 * 2 * RT = 2RT

Finally with these results we can conclude that the decreasing order of these solutions according to their osmotic pressures are:

<h2>CaCl₂ > CH₃OH = LiCl > C₆H₁₂O₆</h2>
3 0
3 years ago
Hoàn thành phương trình sau. Và ghi rõ phản ứng ion: NaHCO33 + NaOH-&gt;
Murrr4er [49]

Answer:

hello

Explanation:

hello

5 0
2 years ago
Plz!!!!!!!!!!!!!!!!!<br><br> name the given substances and calculate their molecular mass
azamat

Where is it then? i cant see it

4 0
3 years ago
What is the approximate wavelength of visible light?
Anestetic [448]

It is approximately 400 - 700 nanometres.

Hope this helps.

r3t40

3 0
3 years ago
Read 2 more answers
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