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zlopas [31]
3 years ago
9

Which of the following shows the balanced equation for the reaction that represents the decomposition of barium carbonate (BaCO3

)? (2 points) Select one: a. BaO + CO2yields BaCO3 b. 2BaO + CO2yields 2BaCO3 c. BaCO3yields BaO + CO2 d. 2BaCO3yields 2BaO + CO2
Chemistry
2 answers:
Inessa [10]3 years ago
5 0
BaCO3 = BaO + CO2, so the answer is C
Vedmedyk [2.9K]3 years ago
5 0

Answer : The correct option is, (c) BaCO_3(s)\rightarrow BaO(s)+CO_2(g)

Explanation :

Decomposition reaction : It is a type of chemical reaction in which one reactant breaks into two or more smaller compounds.

AB\rightarrow A+B

The given balanced decomposition reaction of barium carbonate is,

BaCO_3(s)\rightarrow BaO(s)+CO_2(g)

In this reaction, 1 mole of barium carbonate decomposes to yields 1 mole of barium oxide and 1 mole of carbon dioxide.

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4 0
3 years ago
The following list contains some common radicals. Using the charges on these ions and the idea of valence, predict the formulas
lesantik [10]

Answer : The formula for the compound sodium carbonate is Na_2CO_3

The formula for the compound potassium permanganate is KMnO_4

Explanation :

For formation of a neutral ionic compound, the charges on cation and anion must be balanced.

The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non-metals.

(a) Sodium carbonate

In the compound, the sodium metal forms an ionic compound with polyatomic anion (carbonate) CO_3^{2-}.

Here, sodium is having an oxidation state of +1 called as Na^{1+} cation and carbonate CO_3^{2-} is an anion with oxidation state of -2. The charges are not balanced. So, the charges are balanced by the cris-cross method. Thus, the compound formed will be, Na_2CO_3

Hence, the formula for the compound sodium carbonate is Na_2CO_3

(b) Potassium permanganate

In the compound, the potassium metal forms an ionic compound with polyatomic anion (permanganate) MnO_4^{1-}.

Here, potassium is having an oxidation state of +1 called as K^{1+} cation and permanganate MnO_4^{1-} is an anion with oxidation state of -1. The charges are balanced. Thus, the compound formed will be, KMnO_4

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3 0
3 years ago
The order of elements in the periodic table is based on the atomic number.
Gnoma [55]
Yes it is for example look at Iodine and Tellurium.
Hope this helps :).
3 0
3 years ago
Each of the following organs had a role in excretion, EXCEPT for the _____?
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Answer:

c. the heart

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Explanation:

8 0
3 years ago
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