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Paul [167]
3 years ago
14

HELP ME PLEASE LIKE FRRR

Chemistry
1 answer:
g100num [7]3 years ago
8 0

Answer:

http://hyperphysics.phy-astr.gsu.edu/hbase/Biology/imgbio/treecycle.p ng

Explanation:

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I think the best one is B
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8. Balance the following nuclear equations:<br> ^65/30Ca -&gt; ^65/29Sc +_______
a_sh-v [17]

Explanation:

          ⁶⁵₃₀Ca   →   ⁶⁵₂₉Sc  +   ⁿₓH

The reaction above is nuclear reaction.

In a nuclear reaction, the mass number and atomic number must be conserved.

The mass number is the superscript before the atom

Atomic number is the subscript before the atom

  Conserving mass number:

       65 = 65 + n

        n = 0

   conserving atomic number:

    30 = 29 + x

     x = 1

The unknown atom is a positron i.e a positively charged electron:   ⁰₁e

              ⁶⁵₃₀Ca   →   ⁶⁵₂₉Sc  +  ⁰₁e

learn more:

Transmutation brainly.com/question/3433940

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3 years ago
Heat that flows by conduction is the transfer of thermal energy between substances in contact. What must occur for this to happe
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Is this the full question?

<span>Heat that flows by conduction is the transfer of thermal energy between substances in contact. For this to happen, what must occur?

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Hope this helps!
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