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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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How many moles of gas occupy 98L at a pressure of 2.8atm and a temperature of 292k? and what law would you use?
algol13
Let's assume that the gas has ideal gas behavior.

Then we can use ideal gas equation,
PV = nRT

Where, P is Pressure of the gas (Pa), V is volume of the gas (m³), n is the number of moles of gas (mol), R is the Universal gas constant (8.314 J mol⁻¹ K⁻¹) and T is the temperature in Kelvin (K)

The given data for the gas is,
P = 2.8 atm = 283710 Pa
V = 98 L = 98 x 10⁻³ m³
T = 292 K
R = 8.314 J mol⁻¹ K⁻¹
n = ?

By applying the formula,
283710 Pa x 98 x 10⁻³ m³ = n x 8.314 J mol⁻¹ K⁻¹ x 292 K
                                       n = 11.45 mol

Hence,moles of gas is 11.45 mol.
8 0
3 years ago
The three main groups of elements are metals, nonmetals, and
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Answer:

Metalloids

Explanation:

.... .....................

4 0
2 years ago
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Answer:

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4 0
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True or false: polyvalent cations are usually transition metals​
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Explanation:

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