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How should more than one polyatomic ion be indicated in a chemical formula?
One reason is that the composition of a polyatomic ion is fixed, just as that of a compound is fixed. If more than one polyatomic ion is present in an ionic compound, the use of parentheses allows a subscript to be used after the right parenthesis to designate the number of ions just as such subscript is used to designate the number of atoms in a compound.
When writing an ionic formula how do you indicate that a polyatomic group is present more than one time?
To indicate that a polyatomic group is present more than once in an ionic formula, you enclose the group in parentheses with a subscript outside the parentheses representing the number of times it occurs. For example, in calcium nitrate (Ca(NO3)2), the polyatomic nitrate group (NO3) is present two times.
Why are parentheses used to write the formula Al(OH)3?
Parentheses are used in chemical formulas to indicate the number of atoms or groups of atoms that are enclosed should be multiplied by the subscript outside the parentheses. In the case of Al(OH)3, it indicates that there are three hydroxide (OH) groups for each aluminum (Al) atom in the compound aluminum hydroxide.
How can one effectively read chemical formulas that contain parentheses?
To effectively read chemical formulas with parentheses, first identify the elements within the parentheses and the number of atoms of each element. Then, apply the subscript outside the parentheses to all elements inside. This helps clarify the composition of the compound and ensures accurate interpretation of the formula.
What is the purpose of a subscript in a chemical formula?
The subscript tells you how many atoms of a certain element are in the representative particle of that substance. For example, H2O means 2 hydrogens and 1 oxygen. (The absence of a subscript means there's just 1.) The subscript only applies to the element immediately before it, unless the subscript occurs outside a set of parentheses, in which case it applies to everything inside the parentheses.
What is the percentage by mass of nitrogen in ammonium phosphate NH43PO4. Remember a subscript outside parentheses is multiplied by every subscript inside the parentheses?
28.2%
What does a subscript following a set of parenthesis in a chemical formula indicate?
A subscript following a set of parenthesis in a chemical formula indicates that the entire group enclosed in the parenthesis is to be multiplied by the subscript outside the parenthesis. This is used to show the number of times a group of atoms or molecules is repeated in the compound.
How should more than one polyatomic ion be indicated in a chemical formula?
One reason is that the composition of a polyatomic ion is fixed, just as that of a compound is fixed. If more than one polyatomic ion is present in an ionic compound, the use of parentheses allows a subscript to be used after the right parenthesis to designate the number of ions just as such subscript is used to designate the number of atoms in a compound.
When writing an ionic formula how do you indicate that a polyatomic group is present more than one time?
To indicate that a polyatomic group is present more than once in an ionic formula, you enclose the group in parentheses with a subscript outside the parentheses representing the number of times it occurs. For example, in calcium nitrate (Ca(NO3)2), the polyatomic nitrate group (NO3) is present two times.
How do you indicate the number of molecules in a substance?
The subscript outside the parentheses: (H2SO4)2
Why are parentheses used to write the formula Al(OH)3?
Parentheses are used in chemical formulas to indicate the number of atoms or groups of atoms that are enclosed should be multiplied by the subscript outside the parentheses. In the case of Al(OH)3, it indicates that there are three hydroxide (OH) groups for each aluminum (Al) atom in the compound aluminum hydroxide.
How can one effectively read chemical formulas that contain parentheses?
To effectively read chemical formulas with parentheses, first identify the elements within the parentheses and the number of atoms of each element. Then, apply the subscript outside the parentheses to all elements inside. This helps clarify the composition of the compound and ensures accurate interpretation of the formula.
What is the purpose of a subscript in a chemical formula?
The subscript tells you how many atoms of a certain element are in the representative particle of that substance. For example, H2O means 2 hydrogens and 1 oxygen. (The absence of a subscript means there's just 1.) The subscript only applies to the element immediately before it, unless the subscript occurs outside a set of parentheses, in which case it applies to everything inside the parentheses.
How many oxygen atoms are in aluminum chromate?
In aluminum chromate, the chemical formula is Al2(CrO4)3. This means that there are a total of 12 oxygen atoms in aluminum chromate (4 oxygen atoms in chromiumate ion multiplied by 3 chromiumate ions).
How many carbon atoms in cobalt acetate?
The formula for cobalt acetate is Co(C2H3O2)2. According to the formula, there are four carbon atoms in each formula unit. When an ion is in parentheses, you multiply the subscripts inside the parentheses times the subscript outside the parentheses to find the total number of atoms of an element.
How many oxygen atoms are there in the formula for aluminum nitrate?
The formula for aluminum nitrate is Al(NO3)3, so there are 9 oxygen atoms. Multiply the number of oxygen atoms inside the parentheses times the subscript outside the parentheses.
distribute?
Add multiply what is in parentheses and the number that is on the outside of the parentheses that is to the right or to the left.
