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il63 [147K]
3 years ago
7

What is the chemical formula for the binary compound composed of li+ and o2- ions?

Chemistry
2 answers:
Paraphin [41]3 years ago
5 0

Answer:

Li_2O

Explanation:

To determine the formula of a binary compound given two ions you need to have in mind that the global charges must be balanced.

In this case, that means that the positive charges of the Li atoms must equal the negative charges of de O ones. So, two Li ions neutralize one O ion:

2 Li^+ + O^{-2} \longrightarrow Li_2O

AnnyKZ [126]3 years ago
3 0
Should be Li₂O ! Hope this helped :')
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4 years ago
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Calculate the mass of 6.9 moles of nitrous acid (HNO2). Explain the process or show your work by including all values used to de
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Answer:- 324.3 grams.

Solution:-  We have been given with 6.0 moles of nitrous acid and asked to calculate it's grams. Moles to grams is a unit conversion and for doing this conversion we multiply the given moles by the molar mass of the compound.

Molar mass is the formula mass and to calculate this the atomic masses of each atom are multiplied by their respective subscripts that is the number of the atom in the compound .

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gram per mol is the unit of molar mass. So, the molar mass of NO_2 is 46 grams per mol.

Let's calculate the molar mass of nitrous acid using the same concept.

molar mass of [HNO_2 = 1 + 14 + 2(16)

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Now, 6.9 moles of nitrous acid could easily be converted to grams as:

6.9molHNO_2(\frac{47g}{1mol})

= 324.3 g

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