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Ivan
3 years ago
13

What is the thin structure that surrounds a cell?​

Chemistry
1 answer:
Reil [10]3 years ago
6 0

Answer:

That is the membrane of the cell

Explanation:

The cell membrane is made up of layers of protein and fat. It is made with a <em>phospholipid bilayer</em>. It allows some substances to pass into the cell while blocking others. This is known as <em>semipermeability</em>.

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The answer is 8. Hope this helps.
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Which element has a smaller ionic radius than magnesium (Mg)?
barxatty [35]

Answer:

Na has atomic number 11

which is less than magnesium has atomic number 12

ANSWER IS D

Explanation:

aluminum or Al is atomic 13 and Ca or calcium is atomic number 20 and rubidium or Rb is atomic number 37

6 0
3 years ago
a solution is made by completely dissolving 90. grams of kno3 in 100 grams of water in a beaker. the temperature of this solutio
jolli1 [7]
Pressure has no effect on the solubility of KNO3 in water. This is because it is solid in liquid type of solution. In solid in liquid type of solution, solid is solute (minor component), liquid is solvent (major component). For solid in liquid type of solutions, solubility is independent of pressure. 

On other hand, pressure has a pronounced effect on the solubility of gas in liquid type solutions. In such system, gas is solute (minor component) and liquid is solvent (major component). Example of such solution is aerated water. Herein, CO2 is dissolved in water. In such gas in liquid type of solutions, solubility increases with increasing pressure. 
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3 years ago
1. write the formula for the following ionic compound: Calcium Carbonate
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Answer:

CaCO3

Explanation:

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3 0
2 years ago
What is the percent composition of calcium fluoride
vladimir1956 [14]

Answer:

78.07

Explanation:

them seperatly is

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8 0
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