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Nata [24]
3 years ago
6

Which of the following items are true of early nuclear science?

Chemistry
1 answer:
ValentinkaMS [17]3 years ago
7 0
The items that are true of early nuclear science are "the first nuclear reactions were done in the 1880s" and "the first nucleus split was uranium-235." <span>The answers are letters A and D. It is impossible that nucleus was lost during the reaction as it will not follow the law of mass conservation.

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Starting with acetylene and bromoethane, show how you would use reagents from the table to synthesize 3-hexanone.
Jobisdone [24]

solution:

A = 192 x (1/2) ^ (15/5) = 192 x (1/2) ^3 = 192 x 1/8 = 24 mg

 Starting by hitting acetylene with NaNH2 to deprotonate, this C-- will attack the C connected to the Br Sn2 style to lengthen the chain by two carbons.  

Do this same thing again with the other CH of the acetylene and another bromoethaneto get a six carbon chain, namely, 3-hexyne.  

Now, reduce the alkyne to an alkene via H2/Pd/C, and that gives 3-hexene.  


3 0
3 years ago
Fe+2HCLwhat the reaction type
S_A_V [24]

Answer:

FeCl2 + H. 2

Explanation:

Iron react with hydrogen chloride to produce iron(II) chloride and hydrogen.

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3 years ago
ILL GIVE YOU BRAINLIEST!!! please help me with an NC ecosystem assingment,drop down your number phones ill give you brainliest i
Shtirlitz [24]

Answer:

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6 0
3 years ago
THIS IS URGENT PLEASE HELPPPPPP (NO LINKS PLEASE)
WARRIOR [948]

Answer: The chemical formula for barium chloride shows the number of ATOMS of each element in the SMALLEST representative unit of the substance.

Explanation:

The chemical formula of compound are ways in which a chemical substance is being expressed using chemical symbols to show types of atoms and subscripts to indicate the number of atoms of each element. It shows the number of atoms in a single ( smallest) representative unit of the substance. Using the compound BaCl2;

"Ba" represents the abbreviation for the element "Barium" while "Cl2" represents the abbreviation for the element "chloride" with the subscript of two indicating the number of atoms of chlorine.

There are steps to be considered while writing a chemical compound of a substance, they include:

--> write the symbol of all the elements that forms the compound ( Ba and Cl).

--> write the valency of each element. (Ba has 2 valence electrons while Cl has 1 valence electron).

--> exchange the valency of the both elements such that Ba bears valency of 1 and Cl bears valency of 2 electrons.

--> finally, write the valency of second atom as subscript of first and Write valency of first atom as subscript of second. You will achieve BaCl2 as your chemical formula.

3 0
3 years ago
6. At a glance, it appears like the law of
Mamont248 [21]

Energy and mass equivalence

Explanation:

The law of conservation of energy does not apply to nuclear reactions, the law of conservation of mass-energy makes more sense in this regard.

In nuclear reactions mass is transformed into energy. Therefore, it does not conform with the law of conservation of energy.

  • According to the law of conservation of energy "energy is neither created no destroyed but they are transformed from one form to another. "
  • In nuclear reactions, mass is usually lost. Mass is not conserved.
  • But, the mass is converted into energy and we say there is mass and energy equivalence for nuclear reactions.

Learn more:

Chemical laws brainly.com/question/5896850

#learnwithBrainly

4 0
3 years ago
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