Molecular equation:
<span>Na2CO3 (aq) + CaCl2 (aq) → CaCO3 (s) + 2 NaCl (aq) </span>
<span>Ionic equation: </span>
<span>2 Na⁺ (aq) + CO3²⁻ (aq) + Ca²⁺ (aq) + 2 Cl⁻ (aq) → CaCO3 (s) + 2 Na⁺ (aq) + 2 Cl⁻ (aq) </span>
<span>Net ionic equation: </span>
<span>CO3²⁻ (aq) + Ca²⁺ (aq) → CaCO3 (s)</span>
Answer:
B. Keq = [SO₃][NO]/[SO₂][NO₂].
Explanation:
- For any equilibrium reaction:
Keq = [products]/[reactants].
- For the reaction: SO₂(g) + NO₂(g) → SO₃(g) + NO(g).
<em>∴ Keq = [SO₃][NO]/[SO₂][NO₂].</em>
Answer:
2.A baby grasshoper is a nymph.
Explanation:
Samira’s son is older because there are 12 months in a year and we can gather that 12+12=24 so we know that Paulina’s son is younger because he is only 18 months.
Lithium is the third element on the periodic table and it does not occur in nature in its pure state.
