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myrzilka [38]
3 years ago
11

Please help me with my question ​

Chemistry
2 answers:
rosijanka [135]3 years ago
7 0

Answer:

b

Explanation:

because I had that on my homework and got it correct

Vaselesa [24]3 years ago
4 0

b

Explanation:

because I had that on my homework and got it correct

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Determine the freezing point of a 0.765 m solution of nitrobenzene in naphthalene. (given: naphthalene Kf = 7.45o C Kg/ mole and
amid [387]

Answer: The freezing point of a 0.765 m solution of nitrobenzene in naphthalene is 74.6^0C

Explanation:

Depression in freezing point is given by:

\Delta T_f=i\times K_f\times m

\Delta T_f=T_f^0-T_f=(80.3-T_f)^0C = Depression in freezing point

i= vant hoff factor = 1 (for non electrolyte such as nitrobenzene)

K_f = freezing point constant = 7.45^0C/m

m= molality  = 0.765

(80.3-T_f)^0C=1\times 7.45\times 0.765

T_f=74.6^0C

Thus the freezing point of a 0.765 m solution of nitrobenzene in naphthalene is 74.6^0C

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My labmate discovered a new compound and wanted to try to determine what it could be. We noticed that when mixed with an acid, i
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it went under the process known as crystalization

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Who was the most important scientist in the development of the Modern Atomic Theory?
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John Dalton, an English chemist, meteorologist, and physicists, was best known for his development of the modern atomic theory

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4 years ago
List 3 ways you interact with geomagnetism in your life.
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anwer is c

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Group 1A element sodium combines with Group 7A element chlorine to form sodium chloride or table salt. Based on this information
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The answer is Na < Cl

Chlorine is more electronegative than sodium because this follows the trend of the periodic table. The trend states that an element's electronegativity increases from left to right of a period and bottom to up of a group. Since sodium and chlorine are from the same period, and chlorine is at the right of sodium, chlorine is more electronegative. 
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