Answer:1, 2, and 4
Explanation:
covalent bonds are not ionic. the elements SHARE electrons
Which of the following are properties of compounds formed by covalent bonding (Select all that apply)
1. When you dissolve an covalent compound in water, the solution does not conduct electricity.
2. Covalent compounds often have lower melting points than ionic compounds.
3. When you dissolve an covalent compound in water, the solution conducts electricity.
4. Covalent compounds form when combining two or more nonmetal atoms.
5. Covalent compounds form when combining a two metal atoms.
6. Covalent compounds form when combining a metal atom with a nonmetal atom.
Answer:
See the attachment for the filled in chart.
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Answer:
By putting a coefficient 4 on NaI and 2 on Na₂SO₄
4NaI + Pb(SO₄)₂ → Pbi4 + 2Na₂SO₄
Explanation:
- A chemical equation is balanced for it to obey the law of conservation of mass.
- According to the law of conservation of mass, the mass of the reactants should be equal to the mass of products.
- Balancing involves putting coefficients on reactants and products to get an equal number of atoms of each element on either side of the equation.
- In this case, putting a coefficient four on NaI and two on Na₂SO₄ will make the equation to be balanced.
- Therefore, the balanced chemical equation is;
4NaI + Pb(SO₄)₂ → Pbi4 + 2Na₂SO₄
