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3 years ago

What type of chemical reaction is C3H8 + O2 ---> CO2 + H2O ?

Chemistry

1 answer:

yuradex [85]3 years ago

7 0

E - Combustion
You can tell because the products are CO2 and H2O :)

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A certain phospholipid molecule contains two fatty acid chains of eight carbon atoms each having no carbon-carbon double bonds i

larisa [96]

Answer:

Here's what I get

Explanation:

The fatty acids form ester C-O bonds with the OH groups of glycerol and the phosphoric acid forms phosphate P-O bonds.

The phosphate also forms P-O ester linkages with the OH groups in other alcohols such as choline.

The structure below shows the phospholipid with two saturated C₈ fatty acids and the phosphate group.

5 0

3 years ago

Which choice best names the type or types of rock that can become metamorphic rock?

I am Lyosha [343]

The answer is going to be D

4 0

4 years ago

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In which part of water cycle energy absorbed by water

Serga [27]

Answer:

Latent heating

Explanation:

As this occurs, liquid water absorbs energy, causing it to evaporate and form water vapor. The process of evaporation absorbs tremendous amounts of incoming solar energy.

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2 years ago

Reaction enthalpy for ethanol oxidation, C2H5OH+3O2 -> 2CO2 + 3H2O is 1257 kJ/mole. Energy content per mol fuel ______kJ Ener

MArishka [77]

Answer:

Energy content per mol fuel 1257 kJ.

Energy content per gram fuel = 27.33 kJ

Energy released per mol carbon dioxide gas formed is 628.5 kJ

Energy released per mol oxygen gas consumed= 419 kJ

Moles of carbon dioxide gas formed per 1000 kJ energy released is 1.591.

Explanation:

$C_2H_5OH+3O_2\rightarrow 2CO_2 + 3H_2O,\Delta H= 1257 kJ/mol$

1) Energy released per mole or fuel that is ethanol :

$1mol \times 1257 kJ/mol=1257 kJ$

2) Mass of 1 mole of ethanol = 46 g

46 grams of ethanol produces 1257 kJ of energy

Energy content per gram fuel :

$\frac{1257 kJ}{46 g}=27.33 kJ/g$

3) Energy released when 2 moles of carbon dioxide are formed = 1257 kJ

Energy released per mol of carbon dioxide formed:

$\frac{1}{2}\times 1257 kJ/mol=628.5 kJ/mol$

4) Energy released when 3 moles of oxygen gas are consumed = 1257 kJ

Energy released per mol of oxygen gas consumed:

$\frac{1}{3}\times 1257 kJ/mol=419 kJ/mol$

5) Energy released when 2 moles of carbon dioxide are formed = 1257 kJ

Moles of carbon dioxide gas formed per kilo Joule of energy:

$\frac{2}{1257} mol$

Moles of carbon dioxide gas formed when 1000 kJ of heat is released:

$\frac{2}{1257} \times 1000 mol=1.591 mol$

5 0

4 years ago

What is the process where a solid changes directly into a gas without first turning into a liquid?

olya-2409 [2.1K]

Tip for next time, when you are looking at these things, rather than just posting it, take a look at your options. A solid to a gas, this means that melting cant be an option because that is solid to a liquid, evaporation cant be an option because that is liquid to a gas and condensation cant be because that is gas to a l. Therefore the answer must be sublimatio.

6 0

3 years ago

Read 2 more answers