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Anna35 [415]
3 years ago
8

Advantage fossil fuel​

Chemistry
2 answers:
rodikova [14]3 years ago
5 0

Answer:

The advantages of fossil fuels are that they are abundant and accessible, they provide a large amount of concentrated energy, they are relatively low cost and they can be transported relatively easily.

Hope this helped, if not, don’t hate.

allochka39001 [22]3 years ago
3 0

Answer:

The advantages of fossil fuels are that they are abundant and accessible, they provide a large amount of concentrated energy, they are relatively low cost and they can be transported relatively easily.

Explanation:

I got it from Google and Google is always right lol

.

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Furkat [3]
Since the coefficient of NH3 is 2, 100.4 kJ of heat is released when 2 moles of NH3 are formed. So, when one mole of NH3 is formed, half of the heat would be produced or 50.2 kJ.
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2 years ago
An aqueous solution containing 10 g of an optically pure compound was diluted to 500 mL with water and was found to have a speci
lapo4ka [179]

Answer:

<u>Optical purity = 76.9231 %</u>

<u>Specific rotation of mixture = - 97.6923 °</u>

Explanation:

The mass of the racemic mixture = 3 g

It means it contains R enantiomer = 1.5 g

S enantiomer = 1.5 g

Amount of Pure R = 10 g

Total R = 11.5 g

Total volume = 500 mL + 500 mL = 1000 mL = 1 L

[R] = 11.5 g/L

[S] = 1.5 g/L

Enantiomeric excess = \frac {Excess}{Total\ Concentration}\times 100 = \frac {11.5-1.5}{11.5+1.5}\times 100 = 76.9231 %

<u>Optical purity = 76.9231 %</u>

Also,

Optical purity = \frac {optical\ rotation\ of\ mixture}{optical\ rotation\ of\ pure\ enantiomer}\times 100

Optical rotation of pure enantiomer = −127 °

76.9231=\frac {optical\ rotation\ of\ mixture}{-127^0}\times 100

<u>Specific rotation of mixture = - 97.6923 °</u>

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3 years ago
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Answer: ending results

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I was named after the man that developed the periodic table.
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Einsteinium
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Sodium has 11 protons, therefore number of neutrons must be 23 – 11 = 12 neutrons.

Sodium has 12 neutrons.

<h3>What are neutrons?</h3>

The neutron is a subatomic particle with the symbol n that is slightly heavier than a proton and has a neutral charge (i.e., neither a positive nor a negative charge). Atoms' nuclei are made up of protons and neutrons. Protons and neutrons are both referred to as nucleons because of how similarly they function inside the nucleus and because they both have masses that are about equal to one atomic mass unit. Nuclear physics describes their characteristics and interactions.

The arrangement of electrons around an atom's hefty nucleus largely determines its chemical characteristics. The amount of protons, or atomic number, determines the charge of the nucleus, which determines the electron configuration.  

To learn more about neutrons from the given link:

brainly.com/question/5013687

#SPJ4

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