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VashaNatasha [74]
3 years ago
11

Law of conservation of mass to explain why a chemical equation must be balanced?

Chemistry
2 answers:
SOVA2 [1]3 years ago
7 0
Chemical equations must always balance due to the principles outlined in The Law Of Conservation of Matter. This scientific law states that matter cannot be created out of nothing nor can it be destroyed.
MA_775_DIABLO [31]3 years ago
7 0

<u>Answer:</u>

<em>Law of conservation of mass state that mass can neither be created nor be destroyed.  Also chemical reaction of the sum is outlined in The Law Of Conservation of Matter.</em>

<u>Explanation:</u>

In a chemical reaction the sum of the masses of the products will be equal to the sum of the masses of the reactants. <em>Thus a chemical reaction conserves the total mass.</em> For this law to be valid the system where the reactions take place should be closed.

It has to be properly ensured that there is no transfer of energy or mass between the system and its outer environment. <em>If that happens the sum of masses of products differs from that of the reactants due to the gain or loss of matter to surroundings.  </em>

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Definition of instantaneous speed
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Using Gizmo ,describe the main use for each fuel Coal: Petroleum: In each case, what is the end product of burning the fossil fu
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Answer:

See explanation

Explanation:

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6 0
2 years ago
What mass of hydrogen will be produced by the reaction of 67.3 g of tin with excess water according to the following reaction?
Crank

Answer:

Mass of hydrogen produced =2.28 g

Explanation:

Given data:

Mass of tin = 67.3 g

Mass of hydrogen produced = ?

Solution:

Chemical equation:

Sn + 2H₂O    → SnO₂+ 2H₂

Number of moles of Sn:

Number of moles = mass/ molar mass

Number of moles = 67.3 g/ 118.71 g/mol

Number of moles = 0.57 mol

Now we will compare the moles of tin with hydrogen from balance chemical equation.

                             Sn             :               H₂

                              1               :                2

                          0.57             :               2×0.57 = 1.14

Mass of hydrogen:

Mass = number of moles ×molar mass

Mass = 1.14 mol × 2 g/mol

Mass = 2.28 g

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2 years ago
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