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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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2zns(s)+3o2(g)—>2zno(s)+2so2(g)
Paha777 [63]

This is an example of displacement reaction

<u>Explanation:</u>

  • The chemical reaction in which the one element replaces the other element in a compound is called a displacement reaction. This reaction is also called a replacement reaction.

                                AB + C -----> AC +B

                        2ZnS + 3O2 -----> 2ZnO + 2SO2

  • This happens when A is more reactive than B and gives a stable product. Here the zinc sulfide compound reacts with the oxygen element to the stable product of zinc oxide and sulfur dioxide.
  • In short, the more reactive element displaces the less reactive element is called a displacement reaction.
8 0
3 years ago
A solid precipitates from a solution, absorbing heat as it does so. a. Yes b. No c. Can't decide with information given.
inn [45]

Answer:

c. Can't decide with information given.

Explanation:

The chemical and physical processes can be classified as endothermic or exothermic. The first one happens when the system absorbs heat, so the temperature of the surroundings will decrease, and the other one happens when the system releases heat, then the temperature of the surrounds will increase.

Precipitation is the formation of a solid in a solution. The process can happen with absorption or release of heat, it depends on the substance. So, with the information given it's impossible to say it.

3 0
3 years ago
what is the half life isotope if after 21 days you have 31.25 g remaining from a 250.0 g starting sample size?
alexgriva [62]

250 --> 125 --> 62.5 --> 31.25


each arrow equals one half life, so 3 half lives


14 days/ 3 half lives =


4.67 days = half life

3 0
3 years ago
6. List the following particles in size order, from<br> biggest to smallest?
Arte-miy333 [17]

Answer:

the particles, molecules, and gas range from smallest to largest in the following order: electron < proton < atom <...

5 0
2 years ago
Credible sources always identify the author. Please select the best answer from the choices provided T F
Lostsunrise [7]
This is a true statement because the author can then be further looked into and researched
5 0
3 years ago
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