Answer:
3 Ca²⁺(aq) + 2 PO₄³⁻(aq) ⇄ Ca₃(PO₄)₂(s)
Explanation:
We can write 3 kinds of equations:
- Molecular equation: includes all species in the molecular form. It is useful to write this one first so balancing is easier.
- Full ionic equation: includes all ions and species that do not dissociate in water.
- Net ionic equation: includes only ions that participate in the reaction (<em>not spectator ions</em>) and species that do not dissociate in water.
The reaction between CaCl₂ and Cs₃PO₄ in an aqueous solution is a precipitation (solid Ca₃(PO₄)₂ is formed) and a double displacement one.
<u>Molecular equation</u>
3 CaCl₂(aq) + 2 Cs₃PO₄(aq) ⇄ Ca₃(PO₄)₂(s) + 6 CsCl(aq)
<u>Full ionic equation</u>
3 Ca²⁺(aq) + 6 Cl⁻(aq) + 6 Cs⁺(aq) + 2 PO₄³⁻(aq) ⇄ Ca₃(PO₄)₂(s) + 6 Cs⁺(aq) + 6 Cl⁻(aq)
<u>Net ionic equation</u>
3 Ca²⁺(aq) + 2 PO₄³⁻(aq) ⇄ Ca₃(PO₄)₂(s)
Well, after 1 half life, depending on whatever the amount is, 50% of the original content and or remaining content will undergo decay, as it is unstable.
Original content - 200g
1 half life - 100 g
2 half life - 50 g
3 half life - 25 g
The correct solution would be D. 25 g.
The answer is "C" because all isotopes have a different mass number. The number of protons does not change. The mass of electrons is negligible. Thus, the number of neutrons changes.
increases my factor of 10
Answer:
Barium
Explanation:
-Atomic #56
-5th element inn group 2
- soft
- silvery alkaline earth metal
