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4 years ago

Which requires more energy to dissolve, ionic or covalent compounds? covalent ionic

Chemistry

2 answers:

gregori [183]4 years ago

7 0

Ionic requires more energy to dissolve

tekilochka [14]4 years ago

3 0

the answer is B. ionic

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How many electrons would an atom need to have before it can begin filling the 3s sub level?

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3 years ago

Automobile airbags inflate due to the formation of nitrogen gas from the chemical reaction 2NaN3(s)⟶3N2(g)+2Na(s) Identify the n

Vera_Pavlovna [14]

First part:

2 atoms of Na

6 atoms of N

Second part:

2 atoms of N

2 atoms of Na

Why?

We are given the chemical reaction, so, we can extract the number of atoms for both reactants and products.

We are given the chemical equation:

$2NaN_{3}=3N_{2}+2Na$

We can rewrite it as follow:

$2(NaN_{3})=3N_{2}+2Na$

From the reactants, we have:

$2(NaN_{3})$

$2Na=2atoms\\2N_{3}=2*3=6atoms$

From the products we have:

$3N_{2}+2Na$

$3N_{2}=3*2=6atoms$

$2Na=2atoms$

Hence, we have that:

There are 6 atoms of N in the reactants and 6 atoms of N in the products.

and

There are 2 atoms of Na in the reactants and 2 atoms of Na in the products since we have a balanced equation.

Have a nice day!

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3 years ago

How many moles are contained in a 4.67-l sample of gas at 30°c and 199 kpa?

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Answer:

its 120

Explanation:

i did it :)

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