Answer:
2 HCl
Explanation:
Please kindly check attachment for the step by step solution of the given problem.
Answer is: <span>the size of the sample of uranium-238 does not affect its half-life.
</span><span>
The half-life for the
radioactive decay of U-238 is 4.5 billion years and is independent of initial
concentration (size of the sample).
</span>Half-life <span>is
the time required for a quantity (in this example number
of radioactive uranium) to reduce to half its initial
value.</span><span>
</span>
CuCl₂ copper (II) chloride
Ba(OH)₂ barium hydroxide
<u>net ionic equation</u>:
Cu²⁺ (aq) + 2 Cl⁻ (aq) + Ba²⁺ (aq) + 2 (OH)⁻ (aq) → Cu(OH)₂ (s) + 2 Cl⁻ (aq) + Ba²⁺ (aq)
where:
(aq) - aqueous state
(s) - solid
Answer:
When Zinc reacts with hydrochloric acid the following reaction takes place:
Zn+2HCl→ZnCl
2
+H
2(g)
↑
Here 1 molecules of hydrochloric acid taking part in the reaction,the number of molecules of hydrogen produced in the reaction.
4molesofHCl×
2molesofHCl
1moleofH
2
=2molesofH
2
