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xenn [34]
3 years ago
9

What does it mean for a membrane to be selectively permeable

Biology
1 answer:
choli [55]3 years ago
6 0

Answer: Definition of Selectively Permeable Membranes. All cells are enclosed with a cell membrane. A selectively permeable cell membrane is one that allows certain molecules or ions to pass through it by means of active or passive transport.

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Answer:

The correct answer is: the mass in grams of one mole of a substance

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The molar mass of a given substance corresponds to the mass of one mole of this in grams. Corresponds to a physical property of the substance. Example: the molar mass of water (H20) is:

Molar mass H20 = (Mass H) x 2 + Mass 0 = 2 x 1 g + 16 g = 18 g / mol

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