The mass of hematite that contains 8.0×10³ kg of iron is 2.29 × 10⁴ kg.
<h3>What are iron ores?</h3>
Iron ores refers to minerals in which iron occur in combined form found in the earth's crust.
Some ores of iron include:
- hematite,
- magnetite,
- limonite, and
- siderite.
Molar mass of hematite, Fe₂O₃ = 160 g/mol
Molar mass iron = 56 g/mol
Percent mass of iron in hematite = 56/160 = 35%
The mass of hematite that contains 8.0×10³ kg of iron = 8.0 × 10³kg/0.35 = 2.29 × 10⁴ kg.
Therefore, the mass of hematite that contains 8.0×10³ kg of iron is 2.29 × 10⁴ kg.
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Answer:
Net ionic equation:
Ca⁺²(aq) + CO²⁻₃(aq) → CaCO₃(s)
Explanation:
Chemical equation:
K₂CO₃ + CaCl₂ → KCl + CaCO₃
Balance chemical equation:
K₂CO₃(aq) + CaCl₂(aq) → 2KCl(aq) + CaCO₃(s)
Ionic equation:
2K⁺(aq) + CO²⁻₃(aq) + Ca⁺²(aq) + 2Cl⁻(aq) → 2K⁺(aq) + 2Cl⁻(aq) + CaCO₃(s)
Net ionic equation:
CO²⁻₃(aq) + Ca⁺²(aq) → CaCO₃(s)
The K⁺(aq) and Cl⁻ (aq) are spectator ions that's why these are not written in net ionic equation. The CaCO₃ can not be splitted into ions because it is present in solid form.
Spectator ions:
These ions are same in both side of chemical reaction. These ions are cancel out. Their presence can not effect the equilibrium of reaction that's why these ions are omitted in net ionic equatio
n.
Well, the sun heats up colder areas, the temperature difference causes wind. (sorry if wrong)
