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Sauron [17]
3 years ago
15

BRAINLIESTTT ASAP!! PLEASE HELP ME :)

Chemistry
1 answer:
a_sh-v [17]3 years ago
3 0

Answer: true

Explanation:

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The equation shows one mole of ethanol fuel being burned in oxygen. Convert the energy released into its equivalent mass. C2H5OH
lana [24]

Answer:

47.9 g of ethanol

Explanation:

Combustion is a chemical reaction in which a substance reacts with oxygen to produce heat and light. Combustion reactions have been very useful as a source of energy. Ethanol is now burnt for energy purposes as a fuel. Ethanol has even been proposed as a possible alternative to fossil fuels.

Since 1 mole of ethanol when combusted releases 1367 kJ/mol of energy

x moles of ethanol releases 1418 kJ/mol.

x= 1 × 1418 kJ/mol/ 1367 kJ/mol

x= 1.04 moles of ethanol.

Mass of ethanol = number of moles × molar mass

Molar mass of ethanol = 46.07 g/mol

Mass of ethanol = 1.04 moles × 46.07 g/mol

Mass of ethanol= 47.9 g of ethanol

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3 years ago
Find the mass of 3.00 mol of acetic acid, C2H4O2.
Alexeev081 [22]
Molar mass 

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n = mass / molar mass

3.00 = mass / 60.0

m = 3.00 * 60.0

m = 180 g of <span>C₂H₄O₂ 

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As the number of carbons increases in an homologous series the melting and boiling point generally_________ *
Oliga [24]
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why? Because the number of C atoms in homologous series increases gradually.
5 0
3 years ago
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When a solid has energy added and turns to a liquid what is it called?
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Melting (solid to liquid)
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