Question

conclusions:
write the correct chemical formula for each of the following compounds.

1. magnesium chloride
2. hydrogen sulfide
3. ammonium phosphate
4. aluminum bromide
5. iron (iii) sulfite
6. magnesium sulfide
7. calcium hydroxide
8. zinc bromide
9. scandium chloride
10. sodium nitrate

give the correct names for each of the following compounds.

1. nacl
2. caso₄
3. albr₃
4. koh
5. mgso₃
6. nac₂h₃o₂
7. fepo₄
8. fecl₂
9. fecl₃
10. nh₄no₃

Explanation:

Step1: Determine the chemical formula for Magnesium chloride

Magnesium has a charge of \(Mg^{2+}\) and chloride \(Cl^{-}\). Using the criss - cross method, the formula is \(MgCl_{2}\).

Step2: Determine the chemical formula for Hydrogen sulfide

Hydrogen has a charge of \(H^{+}\) and sulfide \(S^{2 -}\). Using the criss - cross method, the formula is \(H_{2}S\).

Step3: Determine the chemical formula for Ammonium phosphate

Ammonium is \(NH_{4}^{+}\) and phosphate is \(PO_{4}^{3 -}\). Using the criss - cross method, the formula is \((NH_{4})_{3}PO_{4}\).

Step4: Determine the chemical formula for Aluminum bromide

Aluminum has a charge of \(Al^{3+}\) and bromide \(Br^{-}\). Using the criss - cross method, the formula is \(AlBr_{3}\).

Step5: Determine the chemical formula for Iron (III) sulfite

Iron (III) is \(Fe^{3+}\) and sulfite is \(SO_{3}^{2 -}\). Using the criss - cross method, the formula is \(Fe_{2}(SO_{3})_{3}\).

Step6: Determine the chemical formula for Magnesium sulfide

Magnesium has a charge of \(Mg^{2+}\) and sulfide \(S^{2 -}\). Using the criss - cross method, the formula is \(MgS\).

Step7: Determine the chemical formula for Calcium hydroxide

Calcium has a charge of \(Ca^{2+}\) and hydroxide \(OH^{-}\). Using the criss - cross method, the formula is \(Ca(OH)_{2}\).

Step8: Determine the chemical formula for Zinc bromide

Zinc has a charge of \(Zn^{2+}\) and bromide \(Br^{-}\). Using the criss - cross method, the formula is \(ZnBr_{2}\).

Step9: Determine the chemical formula for Scandium chloride

Scandium has a charge of \(Sc^{3+}\) and chloride \(Cl^{-}\). Using the criss - cross method, the formula is \(ScCl_{3}\).

Step10: Determine the chemical formula for Sodium nitrate

Sodium has a charge of \(Na^{+}\) and nitrate \(NO_{3}^{-}\). Using the criss - cross method, the formula is \(NaNO_{3}\).

Step11: Name \(CaSO_{4}\)

\(Ca^{2+}\) is calcium and \(SO_{4}^{2 -}\) is sulfate. So the name is calcium sulfate.

Step12: Name \(AlBr_{3}\)

\(Al^{3+}\) is aluminum and \(Br^{-}\) is bromide. So the name is aluminum bromide.

Step13: Name \(KOH\)

\(K^{+}\) is potassium and \(OH^{-}\) is hydroxide. So the name is potassium hydroxide.

Step14: Name \(MgSO_{3}\)

\(Mg^{2+}\) is magnesium and \(SO_{3}^{2 -}\) is sulfite. So the name is magnesium sulfite.

Step15: Name \(NaC_{2}H_{3}O_{2}\)

\(Na^{+}\) is sodium and \(C_{2}H_{3}O_{2}^{-}\) is acetate. So the name is sodium acetate.

Step16: Name \(FePO_{4}\)

\(Fe^{3+}\) (since \(PO_{4}^{3 -}\) has a charge of \(3-\) and compound is neutral) is iron (III) and \(PO_{4}^{3 -}\) is phosphate. So the name is iron (III) phosphate.

Step17: Name \(FeCl_{2}\)

\(Fe^{2+}\) is iron (II) and \(Cl^{-}\) is chloride. So the name is iron (II) chloride.

Step18: Name \(FeCl_{3}\)

\(Fe^{3+}\) is iron (III) and \(Cl^{-}\) is chloride. So the name is iron (III) chloride.

Step19: Name \(NH_{4}NO_{3}\)

\(NH_{4}^{+}\) is ammonium and \(NO_{3}^{-}\) is nitrate. So the name is ammonium nitrate.

Answer:

1. \(MgCl_{2}\)
2. \(H_{2}S\)
3. \((NH_{4})_{3}PO_{4}\)
4. \(AlBr_{3}\)
5. \(Fe_{2}(SO_{3})_{3}\)
6. \(MgS\)
7. \(Ca(OH)_{2}\)
8. \(ZnBr_{2}\)
9. \(ScCl_{3}\)
10. \(NaNO_{3}\)
11. Calcium sulfate
12. Aluminum bromide
13. Potassium hydroxide
14. Magnesium sulfite
15. Sodium acetate
16. Iron (III) phosphate
17. Iron (II) chloride
18. Iron (III) chloride
19. Ammonium nitrate