Wednesday

April 1, 2015

April 1, 2015

Posted by **sam** on Friday, November 2, 2007 at 9:29pm.

the other has (OH)2

I still do not understand the difference if it has brackets or does not have brackets around it

- science -
**DrBob222**, Friday, November 2, 2007 at 9:44pmWhat's to understand. If brackets (you used parentheses which is the usual way to do it) or parentheses, it means

**to multiply everything**So.*inside*the parenthese by the number in the subscript.

Mg(OH)2 has 1 Mg atom, 2 O atoms and 2 H atoms.

MgO has 1 Mg atom and 1 O atom.

Al(OH)3 has 1 Al atom, 3 O atoms, and 3 H atoms.

(CN)2 has 2 C atoms and 2 N atoms in the compound cyanogen.

(NH4)2CO3 has 2 N atoms, 8 H atoms, 1 C atom and 3 O atoms in the compound ammonium carbonate.

**Answer this Question**

**Related Questions**

English - This is a homework question, but one I have been curious about since I...

Geometry - When writing a math expression, any time there is an open bracket...

Maths Probability - When writing a math expression, any time there is an open ...

Math - I have a matrix with brackets around [7 6 ][13] [14 -6] [8] and i know ...

Math - Find the domain and range of the function: g(x)=-2[2x]+1 What do those ...

Algebra 1 - (b+2)(b+6)= Try multipling the brackets out first and dont't forget ...

sarah science - why have he brackets around the (OH)2 and not just OH2 it ask to...

Math - 2 expression for the perimeter of a square 1 with brackets and 1 without ...

Engineering Economy - Lennon Hearth Products manufactures glass door fireplace ...

maths - List all the subsets(include the null set and the set itself. a) (p) b...