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kicyunya [14]
3 years ago
9

Which statement correctly describes the relationship between air temperature and air pressure?

Chemistry
1 answer:
grigory [225]3 years ago
7 0

Answer:

-Warm air sinks, creating an area of low pressure.

Explanation:

Heat will weigh more, than cool air!

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The sodium atom loses an electron to form a sodium Ion (Na+). Which statement is correct with respect to its atomic radius?
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Answer:

sodium ion has smaller radius than a atom.

Explanation:

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Which of the following statements best describes the number of neutrons in an atom?
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its the last one

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3 years ago
A compound distributes between benzene (solvent 1) and water (solvent 2) with a distribution coefficient, K = 2.7. If 1.0g of th
mote1985 [20]

Explanation:

The given data is as follows.

Solvent 1 = benzene,          Solvent 2 = water

 K_{p} = 2.7,         V_{S_{2}} = 100 mL

V_{S_{1}} = 10 mL,       weight of compound = 1 g

       Extract = 3

Therefore, calculate the fraction remaining as follows.

                  f_{n} = [1 + K_{p}(\frac{V_{S_{2}}}{V_{S_{1}}})]^{-n}

                                  = [1 + 2.7(\frac{100}{10})]^{-3}

                                  = (28)^{-3}

                                  = 4.55 \times 10^{-5}

Hence, weight of compound to be extracted = weight of compound - fraction remaining

                                  = 1 - 4.55 \times 10^{-5}

                                  = 0.00001

or,                               = 1 \times 10^{-5}

Thus, we can conclude that weight of compound that could be extracted is 1 \times 10^{-5}.

7 0
3 years ago
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i need help i have a homework assignment to finish and this is the last question help please and thank u
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How did Henry Moseley revise Mendeleev's periodic table? (Please answer A.S.A.P.)
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<span>If you give it a good search, the most used answer would probably be as follows,

</span><span>In 1914 Henry Moseley found a relationship between an element's X-ray wavelength and its atomic number (Z), and therefore rearranged the table by nuclear charge / atomic number rather than atomic weight. Before this discovery, atomic numbers were just sequential numbers based on an element's atomic weight. Moseley's discovery showed that atomic numbers had an experimentally measurable basis.
</span>
Hope this helps!
5 0
3 years ago
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