Question

Write the formulas for the following chemical compounds:
11)
silicon dioxide ______________________________________________
12)
nickel (III) sulfide _____________________________________________
13) manganese (II) phosphate _____________________________________
14)
silver acetate ______________________________________________
15)
diboron tetrabromide _________________________________________
16) magnesium sulfate heptahydrate ________________________________
17)
potassium carbonate _________________________________________
18)
19)
20)
ammonium oxide ____________________________________________
tin (IV) selenide ______________________________________________
carbon tetrachloride

Answer 1

Here are the chemical formulas for the compounds you've listed:

11) Silicon dioxide: **SiO₂**

12) Nickel (III) sulfide: **Ni₂S₃**

13) Manganese (II) phosphate: **Mn₃(PO₄)₂**

14) Silver acetate: **AgC₂H₃O₂** or **Ag(CH₃COO)**

15) Diboron tetrabromide: **B₂Br₄**

16) Magnesium sulfate heptahydrate: **MgSO₄·7H₂O**

17) Potassium carbonate: **K₂CO₃**

18) Ammonium oxide: **NH₄)₂O**

19) Tin (IV) selenide: **SnSe₂**

20) Carbon tetrachloride: **CCl₄**

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