Al(OH)3
Indicates that there are three OH groups per Al metal
You use parentheses to represent that a polyatomic ion is used more than once as a whole. For example Ba(NO2)2. It is NO2 that is used twice because Ba has a 2+ charge and NO2 has a -1 charge. So you need 2 NO2 to make the formula equal 0. So you use the parentheses to represent you are using 2 NO2
When there is more than one polyatomic ion. Calcium Hydroxide is an example. Ca has a charge of 2+ and OH has a charge of 1-. To make this neutral, 2 hydroxides are required. So it would be written: Ca(OH)2. If we didn't use the parentheses, it would look like there was 1 calcium, 1 oxygen, and 2 hydrogens. Obviously this isn't right. That's why the parentheses are necessary.
there is no limit the name of the polymer should tell you write the structural formula for the monomer until all of the atoms are used
It is in the intention of grouping the substances (specially ions) when there may be a confusion in their chemical formulas if they haven't distinctly interpreted.
what formula is used for calculate flow rate of pump vs kw
The parentheses are used in methods to specify arguments. Some methods don't use arguments; but it would in fact be more confusing, not less, to omit the parentheses in this case - because the parentheses give some kind of consistency.The parentheses also help make it clear when something written after a dot is a field, and when it is a method. For this reason, in languages that allow you to either write or not write the parentheses for methods without arguments, I would always write them, for clarity and consistency.The parentheses are used in methods to specify arguments. Some methods don't use arguments; but it would in fact be more confusing, not less, to omit the parentheses in this case - because the parentheses give some kind of consistency.The parentheses also help make it clear when something written after a dot is a field, and when it is a method. For this reason, in languages that allow you to either write or not write the parentheses for methods without arguments, I would always write them, for clarity and consistency.The parentheses are used in methods to specify arguments. Some methods don't use arguments; but it would in fact be more confusing, not less, to omit the parentheses in this case - because the parentheses give some kind of consistency.The parentheses also help make it clear when something written after a dot is a field, and when it is a method. For this reason, in languages that allow you to either write or not write the parentheses for methods without arguments, I would always write them, for clarity and consistency.The parentheses are used in methods to specify arguments. Some methods don't use arguments; but it would in fact be more confusing, not less, to omit the parentheses in this case - because the parentheses give some kind of consistency.The parentheses also help make it clear when something written after a dot is a field, and when it is a method. For this reason, in languages that allow you to either write or not write the parentheses for methods without arguments, I would always write them, for clarity and consistency.
In mathematics parenthesis must be used when the procedures do not follow the normal order of operations.
A parenthesis is just one ) or ( and the plural, parentheses, is almost always used.
No, it does not. Parentheses are used to include information that is not essential to the sentence. They can also be used to de-emphasize information. Of course, you can have complete sentences in parentheses, but it is not necessary.
When the compound contains an ion with more than one atom in each ion, and the number of such units in a formula unit of the ionic compound is at least 2, parentheses are needed in the formula of the compound. In more conventional naming, parentheses containing a Roman number are often used after the name of a cation to denote its oxidation state, particular for atoms that form more than one stable cation.
Parentheses are the little "(" and ")" marks used to denote something said in an aside. You should enclose this phrase in parentheses.
Parentheses are used in sentences in two different ways. They can enclose words or figures to clarify, or they can be used to enclose numbers or letters used for a list of items.
It is common to group factors in pairs with parentheses surrounding each pair.
Brackets tends to be an English expression, Parentheses is used in the USA and elsewhere. Technically, Parentheses are rounded brackets but this really doesn't matter in mathematics as long as different shaped brackets/parentheses are used to separate the various elements of a mathematical expression.
parentheses
You use parentheses to represent that a polyatomic ion is used more than once as a whole. For example Ba(NO2)2. It is NO2 that is used twice because Ba has a 2+ charge and NO2 has a -1 charge. So you need 2 NO2 to make the formula equal 0. So you use the parentheses to represent you are using 2 NO2
Draw parentheses expect draw them up and down instead of curved. It look like this: lXl (on the computer I used lowercase L's for lines)