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3 years ago

What happens to energy and matter when matter is burns?pls help :p

Chemistry

1 answer:

11111nata11111 [884]3 years ago

7 0

<h2>question:what happens to energy and matter when matter is burns?</h2><h2>answer:In burning, the two atoms or molecules will combine and release energy. Usually one of the two molecules is oxygen or something else chemically like it called an oxidizer. When the molecules combine and release energy, it is released in the form of heat and often light.</h2>

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4 years ago

Explain why the electron configuration of 2-3-1 represents an atom in an excited state?

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3 years ago

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2 years ago

Starting with 4.6 mL of acetic anhydride with a density of 1.082, how many grams of acetylsalicylic acid (theoretical yield) can

Rus_ich [418]

Answer:

m = 8.7917 g

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This reaction to form the Acetylsalicylic acid, is the following:

C4H6O3 + C7H6O3 --------> C9H8O4 + C2H4O2

Now, the problem already stated that the limiting reactant is the acetic anhydride (C4H6O3), and it's a 1:1 mole ratio, so this means that the moles of acetic anhydride reacting will be the moles of acetylsalicylic acid formed. We have the volume of the anhydride and density, let's calculate the mass, and then, the moles:

d = m/V ------> m = d * V

m = 1.082 * 4.6 = 4.9772 g

The molar mass of C4H6O3 reported is 102.09 g/mol so the moles are:

moles = 4.9772 / 102.09 = 0.0488 moles

As the mole ratio is 1:1 these moles are the same moles of the acid so:

moles Ac Acid = 0.0488 moles

The reported molar mass of the acid is 180.158 g/mol, then the mass:

m = 0.0488 * 180.158 = 8.7917 g

<h2>m = 8.7917 g</h2><h2>This is the theorical yield for the reaction</h2>

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3 years ago

Read 2 more answers

What happens to energy and matter when matter is burns?pls help :p​

What happens to energy and matter when matter is burns?pls help :p