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navik [9.2K]
3 years ago
7

How many nitrogen atoms are represented in 2Ca(NO3)2?

Chemistry
1 answer:
arsen [322]3 years ago
4 0

Explanation:

there is 2 nitrogen but if you mean nitrate is 6

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Show a correct numerical setup for calculating the
valkas [14]

0.25 moles of CO2 is present in 11 grams of CO2.

Explanation:

A mole represents the number of chemical entities in an element or molecule.

Number of moles of an element or molecule is determined by the formula:

The Number of moles (n) = weight of the atom given  ÷ atomic or molecular weight of the one mole of the element or molecule.

Themolar mass of one mole of carbon dioxide is:

12+ ( 16×2)

= 44 gram/mole

The given weight is 44 grams of carbon dioxide.

Putting the values in the equation,

n= 11 gms÷44 gms/ mole

n   = 0.25 mole

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3 years ago
The range in size of most atomic radii is approximately what?
Nastasia [14]
It is approximately 10 ^ -10
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Answer:

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Explanation:

Salts are formed when an ionic bond is formed between two elements in the compound. Let us recall that the kind of bond formed between any two elements depends on the magnitude of electronegativity difference between the two elements.

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7 0
2 years ago
What is the chemical formula for the binary compound nitrogen dioxide?
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D. the distance between the objects
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