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Luba_88 [7]
3 years ago
11

Pure substances that have properties entirely different from the atoms that make it up are _____.

Chemistry
2 answers:
galina1969 [7]3 years ago
4 0

<span>Pure substances that have properties entirely different from the atoms that make it up are called compounds. All compounds are made up of molecules, but not all the molecules are compounds. Compounds are composed of more than one mixture of atoms. An example of this is Hydrogen Gas, it is a molecule but it is not a compound because it is only made of only one element. But when Hydrogen is mixed with Oxygen, it forms water, which is now a compound because of the mixture of two hydrogen and one oxygen atoms. </span>

hichkok12 [17]3 years ago
3 0

Answer:

compounds

Explanation:

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Dividing this with the heat of reaction per mole of butane reacted would give the number of moles butane required. Then, multiplying the answer with the molar mass of butane which is 58 grams/mole, will give the mass of butane required. 

Moles of butane = [(-1,500 kJ)/(-2658 kJ/mol butane)]
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Mass of butane  = 0.5643 moles butane * 58 grams/mol butane
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The mass of carbon dioxide (CO_{2}) can be determined by multiplying the moles of butane (C_{4} H_{10}) with the mole ratio of (CO_{2}) produced to the (C_{4} H_{10}) reacted, and then with the molar mass of (CO_{2}), which is 44 grams/mole. 

Mass of carbon dioxide produced 
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Mass of carbon dioxide produced  
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Thus, the mass of butane required is 32.73 grams, and the mass of carbon dioxide produced from the reaction of this amount of butane is 99.32 grams. 
                
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