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tino4ka555 [31]
3 years ago
13

The primary function of molecular membranes is the transport of ions and molecules into and out of cells—transport is directiona

l and selective. the movement of molecules from areas of high concentration to areas of low concentration to gain energy is best described as
Chemistry
1 answer:
Zinaida [17]3 years ago
3 0
The correct answer is passive transport.
When molecules are moved from areas of high concentration to areas of low concentration in order to gain energy, that is considered to be passive transport. If the opposite happens, then that would be active transport.
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If 15 g of C₂H₆ reacts with 60.0 g of O₂, how many moles of water (H₂O) will be produced?
IceJOKER [234]

Answer:

n_{H_2O}=1.5molH_2O

Explanation:

Hello,

In this case, the undergoing chemical reaction is:

2C_2H_6 + 7O_2 \rightarrow 4CO_2 + 6H_2O

Next, we identify the limiting reactant by computing the available moles of ethane and the moles of ethane consumed by 60.0 grams of oxygen:

n_{C_2H_6}^{available}=15g*\frac{1mol}{30g} =0.50molC_2H_6\\n_{C_2H_6}^{reacted}=60.0gO_2*\frac{1molO_2}{32gO_2}*\frac{2molC_2H_6}{7molO_2} =0.536molC_2H_6

Thus, we notice there are less available moles, for that reason, the ethane is the limiting reactant. Finally, we can compute the produced moles of water by:

n_{H_2O}=0.50molC_2H_6*\frac{6molH_2O}{2molC_2H_6}\\\\n_{H_2O}=1.5molH_2O

Best regards.

5 0
3 years ago
How many moles of carbon dioxide (CO2) are in a 22 gram sample?
Anvisha [2.4K]

Answer:

0.5 mole

Explanation:

C=12u

O=16u

1 mole carbon dioxide=44 grams

so 22grams = 0.5 mole

6 0
3 years ago
Why does energy spread out evenly if there's only a 21% chance that energy spreads out evenly?
Harrizon [31]

Answer:

It has to do with increasing the entropy of the universe.

Explanation:

The modern definition of entropy is that it is the extent to which a system is able to disperse its energy. Energy (such as heat!) likes to spread itself out, so that as many states as possible are occupied with the least amount of energy.

3 0
3 years ago
Explain how CO2 is absorbed into the ocean of H2O
Dmitrij [34]
The ocean absorbs CO2 from the atmosphere wherever air meets water. Wind causes waves, giving more opportunity for the water to absorb the carbon dioxide.
7 0
3 years ago
A molecule has two atoms that are bonded to the central atom and one lone pair of electrons around this central atom. What is th
alex41 [277]
The shape of the molecule is trigonal planar.
For example, H₂O:
     ..
    O
  /    \
H     H

3 0
4 years ago
Read 2 more answers
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