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ivanzaharov [21]
3 years ago
15

What part of a cell regulates the movement of materials in and out of the cell

Chemistry
2 answers:
goblinko [34]3 years ago
4 0
I. plasma membrane - It surrounds the cell and has three major functions: ... It regulates the movement of substances into and out of the cell. It is referred to as being selectively permeable because it allows or prevents certain substances to enter and leave the cell.
storchak [24]3 years ago
3 0
The cell membrane controls what goes in and out of the cell. It is contained in An ANIMAL, PLANT and BACTERIA cell. For more information go to the following website: https://www.bbc.com/bitesize/guides/zpqpqhv/revision/8
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A chemist adds 485 mL of a 0.0025 mol/L calcium sulfate solution to a reaction flask. Calculate the mass in grams of calcium sul
viva [34]

Answer : The mass in grams of calcium sulfate is 0.16 grams.

Explanation :

Molarity : It is defined as the number of moles of solute present in one litre of solution.

Formula used :

Molarity=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution}}

Solute is, CaSO_4

Given:

Molarity of CaSO_4 = 0.0025 mol/L

Molar mass of CaSO_4 = 136 g/mole

Volume of solution = 485 mL

Now put all the given values in the above formula, we get:

0.0025=\frac{\text{Mass of }CaSO_4\times 1000}{136\times 485}

\text{Mass of }CaSO_4=0.16g

Thus, the mass in grams of calcium sulfate is 0.16 grams.

6 0
3 years ago
The trapping of heat by carbon dioxide and water vapor is known as the_
daser333 [38]
It's known as the greenhouse effect.
8 0
3 years ago
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A scientist was studying a population of elephants. The first year, he counted a population of 80. Over the next eight
Mars2501 [29]

Answer:

The carrying capacity of this population would be 125 we know this because we see that this number occur multiple times and seems to be the tipping point after which the number of the population always go down

6 0
2 years ago
__________are when the Sun, Earth, and moon align in a straight line, the tides are higher than normal high
IceJOKER [234]
An eclipse i’m pretty sure right? Lunar maybe?
4 0
2 years ago
What do you mean by electronegativity ?​
Kamila [148]

Answer:

Electronegativity is a measure of an atom's ability to attract shared electrons to itself. On the periodic table, electronegativity generally increases as you move from left to right across a period and decreases as you move down a group.

Explanation:

Hope it is helpful....

6 0
3 years ago
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