Answer:
3 moles of calcium oxide are formed
Explanation:
Based on the reaction of Calcium Ca, with oxygen, O₂, to produce calcium oxide, CaO is:
2Ca + O₂ → 2CaO
<em>where 2 moles of calcium produce 2 moles of Calcium oxide.</em>
That means, if 3 moles of Ca react in presence of oxygen:
3 moles of calcium oxide are formed
Answer:
Those in lightning are charged and those in water are not charged.
Explanation:
The particles in lightning differs from those in a water in that water molecules are neutral and those of lightning are charged.
Lightning is made up of charged ions or particles that have either lost or gained electrons.
Lightning is produced as a burst or discharge of charged particles that are imbalanced withing the clouds.
Water molecules are made up of hydrogen and oxygen atoms which forms molecules held together by strong intermolecular and interatomic bonds.
Due to the sharing of electrons that has made this bonding possible, there is a net charge balance which leads to a neutrality.
Water is electrostatically neutral and not charged.
Answer: nothing. It remains undissolved
Explanation: saturated = dissolved as much solute as solvent can contain
The chemical formula for this compound : Cu₂SO₄-Copper(I) sulfate
<h3>Further explanation</h3>
Given
2 atoms of Copper, 1 atom of Sulfur and 4 atoms of Oxygen.
Required
The chemical formula
Solution
The number of atoms forming a compound is usually indicated from the subscript in the formula
From the problem it can be seen that the compound has:
2 atoms of Cu, 1 atom of S, and 4 atoms of O
So the formula:
<em>Cu₂SO₄</em>
Answer:
D.) reducing agent
Explanation:
Oxidized chemicals gain electrons. In order to gain these electrons, another chemical must lose electrons. So, the chemical (which will be oxidized) acts as a reducing agent, causing the other chemical to be reduced and lose electrons.
