Something like (C10H8O4)n? (This is the formula for the plastic a Coke bottle is made of.) It means there are multiple instances of whatever group is inside the parentheses.
More than one polyatomic ion should be indicated in a chemical formula by putting parentheses around the atoms in the ions and then adding a subscript.
You can get a 3/4hp garbage disposal replacement for around $200. It will cost you around $250 for a plumber to install the unit. You should shop around for a good plumber at the lowest price in your area. It isn't a project you should do yourself unless you are fully competent.
Mg3(C6H5O7)2 is the molecular formula for magnesium citrate. Magnesium is a Group IIA element and like all members of this group readily ionizes to Mg+2. C6H5O7 is the formula for the polyatomic citrate ion which has a negative three charge. Molecules are stable combination of atoms that are electronically neutral. It takes three Mg+2 to cancel out the charge of two C6H5O7-3. Parenthesis are placed around the citrate ion to show that the subscript 2 only applies to the citrate ion.
The NH4 asked about is the amonium ion, and it's written NH4+ to indicate it has a positive charge (+1). It's a cation. Wikipedia has more information on this chemically significant polyatomic ion, and you'll find that a link to that post is provided below.
More than one polyatomic ion should be indicated in a chemical formula by putting parentheses around the atoms in the ions and then adding a subscript.
A pair of parenthesis () are put around a particular part of an equation to indicate that you do that step first.
put parentheses around the atoms in the ion and then add a subscript - apex
"The chemical formula for rayon was discovered around 1855." "Alfred Nobel, for whom the Peace Prize is named, developed the chemical formula for dynamite."
Something like (C10H8O4)n? (This is the formula for the plastic a Coke bottle is made of.) It means there are multiple instances of whatever group is inside the parentheses.
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.
In graphing inequalities, brackets ([]) are often used in conjunction with parentheses to indicate whether endpoints are included or excluded. Parentheses signify that the endpoint is not included (open interval), while brackets indicate that the endpoint is included (closed interval). For example, an inequality of x < 3 would be represented with a parenthesis around 3, while x ≤ 3 would use a bracket.
it means you have to do that problem frist then the other problems
The chemical formula of endosulfan is C9H6Cl6O3S. Endosulfan is used in agriculture around the world to control insect pests such as Colorado potato beetles, cabbage worms, leafhoppers, and whiteflies.
More than one polyatomic ion should be indicated in a chemical formula by putting parentheses around the atoms in the ions and then adding a subscript.
When I couldn't solve the final equation on the math test, I had to leave it blank.
Function f left parenthesis x right parenthesis represents the population of bacteria x hours after 9 a.m. What does f left parenthesis 2 right parenthesis minus f left parenthesis 1 right parenthesis represent?