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AURORKA [14]
3 years ago
12

The law of conservation of mass applies to all chemical reactions. True False

Chemistry
2 answers:
natita [175]3 years ago
8 0


True. Matter is neither created nor destroyed in a chemical reaction.


PilotLPTM [1.2K]3 years ago
8 0
True! The law of conservation of mass applies to all chemical reactions
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Given the general chemical equation 3A + 2B → C + 5D,
Irina-Kira [14]

Answer :

(a) The number of moles of D produced can be, 6.67 moles.

(b) The volume of D prepared can be, 24.5 L

Explanation :

The given chemical reaction is:

3A+2B\rightarrow C+5D

Part (a) :

From the balanced chemical reaction, we conclude that:

As, 3 moles of A react to give 5 moles of D

So, 4 moles of A react to give \frac{5}{3}\times 4=6.67 moles of D

Thus, the number of moles of D produced can be, 6.67 moles.

Part (b) :

As we know that 1 moles of substance occupies 22.4 L volume of gas.

As, 2\times 22.4L volume of B gives 5\times 22.4L volume of D

As, 9.8 L volume of B gives \frac{5\times 22.4L}{2\times 22.4L}\times 9.8L=24.5L volume of D

Thus, the volume of D prepared can be, 24.5 L

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3 years ago
Which of the following shows the energy transformation that
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