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Aleks04 [339]
4 years ago
13

The official web site of the Nobel Prize explains that Marie Curie’s chemistry prize was partly for her discovery that the radio

activity of a substance is unaffected when it undergoes a chemical reaction. What does this discovery imply?
A.Radioactivity involves all particles that make up an atom.
B.Radioactivity involves the particles that make up an atom’s nucleus.
C.Radioactivity involves only neutrons.
D.Radioactivity involves only the electrons in an atom’s electron cloud.
Chemistry
2 answers:
never [62]4 years ago
8 0
The correct answer of the given question above would be option A. Based on the given description above about the description of the discovery that the radioactivity of a substance is unaffected when it undergoes a chemical reaction, this implies that r<span>adioactivity involves all particles that make up an atom. Hope this helps.</span>
fiasKO [112]4 years ago
7 0

Answer:

The answer is A on edg hope that helps

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If you had 24 moles of hydrogen gas how many moles of ammonia (NH3) would be produced?
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8

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Find the mass of an object that has a density of 1.5 g/cm3 and has a volume of 8cm3
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Determine the mass of CuSO4 • 5H20 that must be used to prepare 250mL of 2.01 M CuSO4(aq).
mario62 [17]

Given parameters:

Volume of CuSO₄ = 250mL

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Unknown:

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Now that we know the expression, it is possible to solve for the unknown mass.

First find the number of moles of CuSO₄;

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Take 250mL to L so as to ensure uniformity of units;

           Volume  = 250 x 10⁻³L

  Input the parameters and solve for number of moles;

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From the equation;

             1 mole of CuSO₄ is produced from 1 mole of CuSO₄.5H₂O  

So  0.5 moles of CuSO₄ will be produced from 0.5 moles of CuSO₄.5H₂O

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Mass of CuSO₄.5H₂O = number of moles x molar mass

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