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When a polyatomic ion is in parentheses and there is a subscript on the outside of it is the polyatomic ion multiplied or add?
Wiki User
∙ 13y ago
Multiplied.
Wiki User
∙ 13y ago
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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 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.
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.
What is the compound formed from Ca2 and NO3 -1?
The compound formed is calcium nitrate, Ca(NO3)2. Calcium forms a +2 ion and the nitrate polyatomic forms a -1 ion. In order to balance out the charges, you need two nitrate ions to bond with one calcium. This ratio is reflected in the formula, which places the nitrate in parentheses with the "2" subscript outside it, which means there are two of them.
What is the small number called to the right of the symbol molecule and the chemical equation?
It's called a subscript, and in the formula for a substance, it tells you how many representative particles you have of that substance. If there is no subscript, it is understood to be 1, which means you only have 1 representative particle of that substance. Examples: H2O, or water, means you have 2 hydrogen atoms and 1 oxygen atom. Ca(NO3)2, or calcium nitrate, means you have 1 calcium atom, and 2 nitrate polyatomics (comprised of a total of 2 nitrogens and 6 oxygens.) A subscript outside a set of parentheses distributes to everything in 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%
How do you indicate the number of molecules in a substance?
The subscript outside the parentheses: (H2SO4)2
How many oxygen atoms are in aluminum chromate?
The formula for aluminum chromate is Al2(CrO4)3, so there are 12 oxygen atoms. Multiply the number of oxygen atoms inside the parentheses times the subscript outside the parentheses.
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 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.
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.
What does the number inside the parentheses in a chemical formula tell you?
Taking an example. 6H3PO4 This means that there are 6 molecules ( 6 molar ratios) of H3PO4 The '3' is the number of hydrogen (H) atoms in the molecule The '4 ' is the number of oxygen (O) atoms in the molecule. NB The '3' & '4' should acutally be written as subscript. Another example Mg(OH)2 The '2' outside the brackets indictates that there are '2' hydroxide (-OH) ions in the molecule. Finally, CH3 (CH2)14COOH The '2' & '3' as indicated above. however, the ''14' indicates that there are '14' CH2 (ethylene) in the chain . It is written in this form in order not to write a long chain of 'CH2.
What is the compound formed from Ca2 and NO3 -1?
The compound formed is calcium nitrate, Ca(NO3)2. Calcium forms a +2 ion and the nitrate polyatomic forms a -1 ion. In order to balance out the charges, you need two nitrate ions to bond with one calcium. This ratio is reflected in the formula, which places the nitrate in parentheses with the "2" subscript outside it, which means there are two of them.
What is the small number called to the right of the symbol molecule and the chemical equation?
It's called a subscript, and in the formula for a substance, it tells you how many representative particles you have of that substance. If there is no subscript, it is understood to be 1, which means you only have 1 representative particle of that substance. Examples: H2O, or water, means you have 2 hydrogen atoms and 1 oxygen atom. Ca(NO3)2, or calcium nitrate, means you have 1 calcium atom, and 2 nitrate polyatomics (comprised of a total of 2 nitrogens and 6 oxygens.) A subscript outside a set of parentheses distributes to everything in 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.
Do you put a period inside or outside a parentheses?
put it outside.
Is there a period at the end of a sentence in parentheses?
The entire sentence should be in parentheses, however the portion that is, should contain a period outside of the parentheses.
