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Lemur [1.5K]
3 years ago
5

A 12.2-g sample of X reacts with a sample of Y to form 78.9g of XY. what mass of Y reacted?​

Chemistry
1 answer:
barxatty [35]3 years ago
3 0

Answer:

The answer to your question is:  y = 66.7g

Explanation:

To solve this problem we must remember the Lavoisier law of conservation of mass, that stated that the mass can not be created or destroyed but it changes forms.

So, the mass of the reactants is equal to the mass of the products.

Process

                x          +          y             ⇒           xy

             12.2g                   ?                         78.9 g

           12.2 g + y = 78.9g

           y = 78.9 - 12.2

           y = 66.7g

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A certain chemical reaction releases 36.2 kJ/g of heat for each gram of reactant consumed. How can you calculate what mass of re
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Answer:

0.038 g of reactant

Explanation:

Data given:

Heat release for each gram of reactant consumption = 36.2 kJ/g

mass of reactant that release 1360 J of heat = ?

Solution:

As  36.2 kJ of heat release per gram of reactant consumption so first we will convert KJ to J

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36.2 kJ = 36.2 x 1000 = 36200 J

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Apply unity formula

                 36200 J of heat release ≅ 1 gram of reactant

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Do cross multiplication

              X gram of reactant = 1 g x 1360 J / 36200 J

              X gram of reactant = 0.038 g

So 0.038 g of reactant will produce 1360 J of heat.

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In the citric acid cycle, after the acetyl-group (2C) from acetyl-CoA is transferred to oxaloacetate (4C) to produce citrate (6C
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Answer:

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would you expect potassium to have a high electronegativity or a low electronegativity? explain your answer
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A low electronegativity

Explanation:

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