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Flura [38]
2 years ago
13

Which of these equations is balanced? (Select all that are correct)

Chemistry
1 answer:
lawyer [7]2 years ago
3 0

2CaCO3 =2CaO+CO2 is balanced but we can change 2CaCO =2CaO3+C03

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D is the answer so now we can understand

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3 years ago
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Which is not a characteristic of a compound?
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The second answer is not a characteristic because compounds don’t vary from sample to sample. For example NaCl (table salt) is indistinguishable from sample to sample.
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Does brainy work with out Wi-Fi?​
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Which of the following pairs of elements is most likely to share one or more pairs of electrons between their nuclei?
Nana76 [90]
Sulfur and chlorine. Explanation: A covalent bond is formed by two non-metals with similar electronegativities. As a consequence, they share one or more pairs of electrons between their nuclei
3 0
3 years ago
Dinitrogen pentoxide is used in the preparation of explosives. If 7.93 mol of
Tpy6a [65]

The volume of O₂ produced: 84.6 L

<h3>Further explanation</h3>

Given

7.93 mol of  dinitrogen pentoxide

T = 48 + 273 = 321 K

P = 125 kPa = 1,23365 atm

Required

Volume of O₂

Solution

Decomposition reaction of dinitrogen pentoxide

2N₂O₅(g)→4NO₂(g)+O₂ (g)

From the equation, mol ratio N₂O₅ : O₂ = 2 : 1, so mol O₂ :

= 0.5 x mol N₂O₅

= 0.5 x 7.93

= 3.965 moles

The volume of O₂ :

\tt V=\dfrac{nRT}{P}\\\\V=\dfrac{3.965\times 0.082\times 321}{1.23365}\\\\V=84.6~L

5 0
3 years ago
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