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Alexxandr [17]
3 years ago
10

Which of the following would be the best empirical evidence of the cycling of water in a terrarium?

Chemistry
2 answers:
sergejj [24]3 years ago
8 0

B. Healthy Plants is the answer


Kaylis [27]3 years ago
6 0
Condensation droplets
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Why do thermistors increase in conductivity when heated? What happens in normal metals? Explain on the atomic level.
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Metal conductivity generally goes down or resistivity goes up with temperature goes up.

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The atmosphere's variable gases that most influence the greenhouse effect are _____. nitrogen and oxygen argon and carbon dioxid
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Write the formula for the polyatomic ion in KOH. Express as an ion..
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The law of conservation of mass states that mass is neither created nor destroyed during a chemical reaction. This can be gleane
GenaCL600 [577]

Answer : The total mass of oxygen gas released in the reaction will be, 12.8 grams

Explanation :

Law of conservation of mass : It states that mass can neither be created nor be destroyed but it can only be transformed from one form to another form.

This also means that total mass on the reactant side must be equal to the total mass on the product side.

The balanced chemical reaction will be,

2MgO\rightarrow 2Mg+O_2

According to the law of conservation of mass,

Total mass of reactant side = Total mass of product side

Total mass of 2MgO = Total mass of 2Mg+O_2

or,

Total mass of 2MgO = Mass of 2Mg  + Mass of O_2

As we are given :

Total mass of MgO = 16.12 grams

The mass of Mg = 9.72 grams

So,

Total mass of 2MgO = Mass of 2Mg  + Mass of O_2

2\times 16.12g=2\times 9.72g+\text{Mass of }O_2

\text{Mass of }O_2=32.24g-19.44g=12.8g

Therefore, the total mass of oxygen gas released in the reaction will be, 12.8 grams

8 0
3 years ago
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