Answer:
the centers for disease control and prevention
Answer: 5.74×10^8 stacks
Explanation:
The U.S. quarter has a mass of 5.67 g and is approximately 1.55 mm thick.
1 stack would contain $2.83x 10^4
No. of stacks to pay off debt=
$16,213,166,914,811/2.83 ×10^4
= 5.74 × 10^8 stacks
Answer:
Net ionic equation: 2I⁻(aq) + Cr²⁺(aq) → CrI₂(s)
<h3>
Explanation:</h3>
- A chemical equation shows chemical symbols of compounds known as reactants and compounds known as products in a chemical reaction.
- The chemical equation between hydroiodic acid and chromium (II) carbonate is given by;
2HI(aq) + CrCO₃(aq) → H₂CO₃(aq) + CrI₂(s)
- The Ionic equation is an equation that shows all the ions involved in a chemical reaction.
- In this case, the ionic equation is;
2H⁺ I⁻(aq)+ Cr²⁺ CO₃²⁻(aq) → 2H⁺ CO₃²⁻(aq) + CrI₂(s)
- The net ionic equation is an equation showing only the ions that take part in the reactions. The ions that do not take part in the chemical reaction known as spectator ions are not shown when writing net ionic equations.
- Spectator ions are those ions that do not change state after the chemical reaction has taken place. In this case, hydrogen ions and carbonate ions are spectator ions.
- The net ionic equation is
2I⁻(aq) + Cr²⁺(aq) → CrI₂(s)
