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Oxana [17]
3 years ago
12

Which of the following would be a valid hypothesis for a scientific investigation about food shopping decision affect food secur

ity?
A spending more money on food results in food of higher nutritional value

B why do people shop at supermarkets more often than local farmers markets

C how is the cost of a food related to its nutritional value

D I prefer the taste of foods purchase from local farmer market​
Chemistry
1 answer:
snow_lady [41]3 years ago
6 0

Answer: Learning is essential to our existence. Just like food nourishes our bodies, information and continued learning nourishes our minds. ... Today, continuous learning forms a necessary part in acquiring critical thinking skills and discovering new ways of relating to people from different cultures.

Explanation: Learning is essential to our existence. Just like food nourishes our bodies, information and continued learning nourishes our minds. ... Today, continuous learning forms a necessary part in acquiring critical thinking skills and discovering new ways of relating to people from different cultures.

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Which of the following equations can be used to calculate pOH?
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POH = 14 - pH
pOH = -log [OH-]
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3 years ago
With the levels closest to the nucleus of
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Answer:

The first energy level is closest to the nucleus. The second energy level is a little farther away than the first. ... The electrons in the energy level farthest from the nucleus are called valence electrons. Atoms in the same column (group) in the periodic table have the same number of valence electrons.

Explanation:

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What is meant by solvation?
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Solvation describes the interaction of solvent with dissolved molecules.
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Which of the following statements explain why the van der Waals equation must be used to describe real gases? X. interactions be
8090 [49]

Answer:

Statements Y and Z.

Explanation:

The Van der Waals equation is the next one:

nRT = (P + \frac{an^{2}}{V^{2}})(V -nb) (1)

The ideal gas law is the following:

nRT = PV (2)

<em>where n: is the moles of the gas, R: is the gas constant, T: is the temperature, P: is the measured pressure, V: is the volume of the container, and a and b: are measured constants for a specific gas.  </em>

As we can see from equation (1), the Van der Waals equation introduces two terms that correct the P and the V of the ideal gas equation (2),<u> by the incorporation of the intermolecular interaction between the gases and the gases volume</u>. The term an²/V² corrects the P of the ideal gas equation since the measured pressure is decreased by the attraction forces between the gases. The term nb corrects the V of the ideal gas equation, <u>taking into account the volume occuppied by the gas in the total volume, which implies</u> a reduction of the total space available for the gas molecules.          

So, the correct statements are the Y and Z: the non-zero volumes of the gas particles effectively decrease the amount of "empty space" between them and the molecular attractions between gas particles decrease the pressure exerted by the gas.            

Have a nice day!

5 0
3 years ago
What products will form when potassium is added to cold, liquid water?
rewona [7]

Answer:

C

Explanation:

Potassium metal reacts very rapidly with water, which forms Potassium hydroxide (KOH) and hydrogen gas (H2).

4 0
3 years ago
Read 2 more answers
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