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Because the calcium cation has a +2 charge and the nitrate anion has a -1 charge. Thus, it takes 2 of the nitrate anions (NO3-) to balance the charge of the calcium cation (Ca^2+). Because the nitrate anion is a polyatomic anion, the parentheses are used to avoid confusion and to show there are 2 of the polyatomic anions.
What else can I help you with?
Why do you put parentheses around a polyatomic ion?
Parentheses around a polyatomic ion in a chemical formula indicates that more than one of that ion is present in the compound. This notation helps clarify the chemical formula and the ratio of elements in the compound.
When do you use a parentheses for a formula?
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.
What sentences can you use with the word proper?
It is important to use proper grammar in your writing. Please make sure to dress in proper attire for the event. The teacher stressed the importance of proper citation in the research paper. Proper hydration is key for maintaining good health.
What is a sentence for proper?
It is important to use proper grammar when writing an essay.
How do you convert a proper noun into a proper adjective?
I don't know about a proper adjetive, but I know how to turn a proper noun into a proper adjective. A proper noun is the proper name of a country, organization, corporation such as Great Britain, America, Spain. Proper adjectives modify nouns as in British flag, American schools, Spanish rice. There, proper nouns (Britain, America, Spain) have been turned into proper adjectives. How about the Universe into universal? Queen Elizabeth from the Elizabethan period? Does this help?Very briefly, when you use a proper noun, for example, Kennedy, to describe another noun, as in Kennedy Administration, grammatically speaking, you are using that proper noun as a proper adjective. It's that simple.
What patterns are involved in multiplying algebraic expression?
use parentheses and distribute
Please explain inserting parentheses to make math sentence true.?
use parentheses when u do a opperation. Parentheses have to do 1st no matter what
How the musical elements show and difference in culture?
if you want a proper answer use proper grammar
How do you use the word parentheses in a sentence?
Parentheses are the little "(" and ")" marks used to denote something said in an aside. You should enclose this phrase in parentheses.
Should a paraphrase be in a parentheses?
No, a paraphrase should not be in parentheses. When paraphrasing, you should reword the original text in your own words, without the use of parentheses.
What does the commutative property use parenthesis?
It does not use parentheses.
How to use parentheses effectively in an essay?
To use parentheses effectively in an essay, place additional information or clarifications within them. Make sure the sentence still makes sense without the parentheses. Use them sparingly to avoid confusing the reader.
When should you use parentheses in an essay?
You should use parentheses in an essay to provide additional information or clarification that is not essential to the main point of the sentence.
How do you use Dining in a sentence?
Show proper manners in the dining table.
When is a period put inside Parentheses?
Use a period inside a parenthetical when the full sentence inside the parentheses ends.
Does all the parentheses mean the same thing?
It depends what subject you use it for. For example, if you use parentheses in terms of language arts then, it would be the same thing no matter how you use it. In that case, it means you want to add extra information that isn't necessarily essential to the meaning. It can also be the definition of a term. If you use parentheses in math, then it can mean to multiply. It can also mean to work what is inside the parentheses first.
How do parentheses and brackets work in math problems?
Parentheses and brackets work the same in math as they do in writing -- use them to group ideas.
