1) CaSO4
2) Al_2(SO_4)_3
3) K_2SO_4
What is the :
Number of SO_4^2- Units ?
Number of Sulfur Atoms ?
Number of Oxygen Atoms ?
Number of Metal Atoms ?
2) Al_2(SO_4)_3
3) K_2SO_4
What is the :
Number of SO_4^2- Units ?
Number of Sulfur Atoms ?
Number of Oxygen Atoms ?
Number of Metal Atoms ?
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Well if I understand this question (it seems too easy but...)
1.) 1 unit SO4^2-. One Sulfur atom, four oxygen, one metal (Ca^2+) ion.
2.) Three units of SO4^2-, that makes three sulfur, twelve oxygen, and two metal (Al^3+) ions.
3.) One units SO4, one sulfurs, four oxygen, two (potassium, K^+1) metal ions.
The number that is a subscript next to an atom is the number present. If the subscript follows an ion that is in parenthesis (SO4 for example) then that whole unit is multiplied by the subscript. So in SO4, we have one sulfur and four oxygen atoms. If we were to have (SO4)3, we would have tree units of the entire enclosed atoms, so three sulfur, twelve (3x4) oxygen.
1.) 1 unit SO4^2-. One Sulfur atom, four oxygen, one metal (Ca^2+) ion.
2.) Three units of SO4^2-, that makes three sulfur, twelve oxygen, and two metal (Al^3+) ions.
3.) One units SO4, one sulfurs, four oxygen, two (potassium, K^+1) metal ions.
The number that is a subscript next to an atom is the number present. If the subscript follows an ion that is in parenthesis (SO4 for example) then that whole unit is multiplied by the subscript. So in SO4, we have one sulfur and four oxygen atoms. If we were to have (SO4)3, we would have tree units of the entire enclosed atoms, so three sulfur, twelve (3x4) oxygen.
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Ya