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Brut [27]
3 years ago
12

Choose one of the following areas of research and describe how these scientific studies will have an affect on the economy, poli

tics, and society. You can choose from the following: scientists studying the atmosphere, air pollution, and weather patterns; scientists studying renewable energy resources like solar and wind energy; or scientists studying water movement and the hydrologic cycle.
Chemistry
1 answer:
vlabodo [156]3 years ago
8 0
It wont matters what you put just read.

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5. What is the molar mass of ethanol (C2H5OH)?
AVprozaik [17]
<h2>D) 46.07 g/mol</h2>

The molar mass is given by the sum of the atomic masses of the component elements of the substance.

In our case, the substance is ethanol or C₂H₅OH.

A_C=12.011

A_H=1.0079

A_O=15.9994

\mathcal M_{C_2H_5OH} = 2 \times A_C + 6 \times A_H + A_O = 2 \times 12.011 + 6 \times 1.00079+ 15.999 4= 24.022 + 6.0474 + 15.9994= 46.069≈ \boxed{46.07 \dfrac{g}{mol}}

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3 years ago
What happens when the electron moves from the first energy level to the second energy level?
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If an electron moves up from the first orbit to the higher energy levels, energy will be absorbed by the electron itself and no emission line produced.
But if it moves from the orbits 6,5,4 and 3 to orbit 2, energy will be released by the electron and different emission lines wll be produced.
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3 years ago
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alekssr [168]
The answer is vertical column
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Lines on a map joining places that have the same temperature?
vazorg [7]

Answer:

Isotherms

Explanation:

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How many sulfur atoms are there in 3.90 mol of sulfur?
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 <span>In a mole of anything, there are 6.023 x 10^23 units. So, in 3.9 moles of sulfur, there are 3.9 * 6.023 x 10^23 = 23 x 10^23 = 2.3 x 10^24 atoms (keeping only 2 sig figs).  Hope I help!!
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