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mote1985 [20]
4 years ago
5

Which method of moving materials in and out of the cell requires energy.

Chemistry
2 answers:
Vikki [24]4 years ago
8 0
<span>active transport i think
</span><span> 

</span>
kkurt [141]4 years ago
6 0
The answer is active transport
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Consider the following generic chemical equation: A + B → C + D Reactant A contains 85.1 J of chemical energy. Reactant B contai
irakobra [83]

Answer:

Product D contains 30 J

Explanation:

We know energy does not destroy or create, it only transforms. So, at the right side of the equation we have the energy of the reactant A and the energy of the reactant B, as a sum, and, as a result we have to get the same energy plus the energy absorbed by the reaction.

So, we have,

Ea+Eb = Eabsorbed+Ec+Ed

Ed = Ea+Eb-Eabsorbed-Ec

Ed = 85.1 J + 87.9 J - 104.3 J - 38.7 J

Ed = 30 J

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4 years ago
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vesna_86 [32]

Answer:

Condensation: 423.3 K

Freezing: 83.96 K

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3 years ago
Rewrite these word equations as chemical equations.
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Answer:

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A combustion reaction occurs between one molecule of methane (CHa) and two molecules of oxygen (O2).
SCORPION-xisa [38]

The total number of atoms make up the products :

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<h3>Further explanation </h3>

Complete combustion of Hydrocarbons with Oxygen will produce CO₂ and H₂O compounds.

If O₂ is insufficient there will be incomplete combustion produced by CO and H and O

Hydrocarbon combustion reactions (especially alkanes)

For combustion of methane (CH₄) and two molecules of oxygen (O₂).

\tt CH_4+2O_2\rightarrow CO_2+2H_2O

The number of atoms make up the products

CO₂ : 1 carbon, 2 oxygen

2H₂O : 4 hydrogen , 2 oxygen

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heat flows in

heat flows out

heat flows out

Explanation:

6 0
4 years ago
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