The basic function of the cell membrane is to protect the cell from its surroundings. Secondly, the cell membrane controls the movement of materials in and out of the cell (it is in this way that it is selectively permeable).
Answer:
1 M
Explanation:
Molarity is moles per liter (mol/L).
You have 3 moles of HCl in 3 L of water. Divide the two values.
(3 mol)/(3 L)
= 1 mol/L
= 1 M
According to Raoult's law, Vapor pressure is directly proportional to the mole fraction of the solution. As 1.0 M CaF2 has least moles here, it has lowest vapor pressure.
In short, Your Answer would be Option D
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<u>Answer:</u> The moles of oxygen and carbon dioxide in air is and respectively
<u>Explanation:</u>
To calculate the number of moles, we use the equation:
Given mass of atmosphere =
Average molar mass of atmosphere = 28.96 g/mol
Putting values in above equation, we get:
We know that:
Percent of oxygen in air = 21 %
Percent of carbon dioxide in air = 0.0415 %
Moles of oxygen in air =
Moles of carbon dioxide in air =
Hence, the moles of oxygen and carbon dioxide in air is and respectively
Answer:
Trial 2, because the amount of product formed per unit time is higher.
Explanation:
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