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2 years ago

Which atom has the larger electronegativity? B, N, C, O

Chemistry

1 answer:

luda_lava [24]2 years ago

4 0

Answer:

B 2.0

Explanation:

B 2.0

N 3.0

C 2.5

O 3.5

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monitta

The sum of the masses of the reactants must equal the sum of the masses of the products; as required by
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3 years ago

How many joules of energy are absorbed when 36.2 grams of water is evaporated?

AfilCa [17]

Answer:

.........................................................

Explanation:

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2 years ago

Automotive air bags inflate when sodium azide, NaN3, decomposes explosively to its constituent elements. How many moles of nitro

attashe74 [19]

Answer:

2.29 g of N2

Explanation:

We have to start with the chemical reaction:

$NaN_3~->~Na~+~N_2$

The next step is to balance the reaction:

$2NaN_3~->~2Na~+~3N_2$

We can continue with the mol calculation using the molar mass of

$NaN_3$ (65 g/mol), so:

$3.55~g~NaN_3\frac{1~mol~NaN_3}{65~g~NaN_3}=0.054~mol~NaN_3$

Now, with the molar ratio between $NaN_3$ and $N_2$ we can calculate the moles of $N_2$ (2:3), so:

$0.054~mol~NaN_3\frac{3~mol~N_2}{2~mol~NaN_3}=0.0819~mol~N_2$

With the molar mass of $N_2$ we can calculate the grams:

$0.0819~mol~N_2=\frac{1~mol~N_2}{28~g~N_2}=2.29~g~N_2$

I hope it helps!

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3 years ago

If different atoms can come together to form all living and nonliving things, why is there a limit to different combinations we

prohojiy [21]

Answer: gas dissolved in liquid

Explanation:

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3 years ago

Which alcohol will undergo acid-catalyzed dehydration under the mildest conditions?

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3 years ago