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3 years ago

6 What is cell wall? where is it found? insy.

Chemistry

2 answers:

Mrrafil [7]3 years ago

8 0

Answer:

The cell wall is the protective, semi-permeable outer layer of a plant cell. A cell wall is a fairly rigid layer surrounding a cell located outside of the plasma membrane that provides additional support and protection.

Veseljchak [2.6K]3 years ago

4 0

Answer:

what is cell wall?

A cell wall is a layer located outside the cell membrane found in plants, fungi, bacteria, algae, and archaea

where is it found

They are found in bacteria, archaea, fungi, plants, and algae.

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If the container is closed and the ethanol is allowed to reach equilibrium with its vapor, how many grams of liquid ethanol rema

SVETLANKA909090 [29]

Explanation:

Let us assume that the given data is as follows.

V = 3.10 L, T = $19^{o}C$ = (19 + 273)K = 292 K

P = 40 torr (1 atm = 760 torr)

So, P = $\frac{40 torr}{760 torr} \times 1 atm$

= 0.053 atm

n = ?

According to the ideal gas equation, PV = nRT.

Putting the given values into the above equation to calculate the value of n as follows.

PV = nRT

$0.053 atm \times 3.10 L = n \times 0.0821 L atm/mol K \times 292 K$

0.1643 = $n \times 23.97$

n = $6.85 \times 10^{-3}$

It is known that molar mass of ethanol is 46 g/mol. Hence, calculate its mass as follows.

No. of moles = $\frac{mass}{\text{molar mass}}$

$6.85 \times 10^{-3} = \frac{mass}{46 g/mol}$

mass = $315.1 \times 10^{-3}$ g

= 0.315 g

Thus, we can conclude that the mass of liquid ethanol is 0.315 g.

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3 years ago

What instrument us normally used to measure atmospheric pressure

Anika [276]

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4 years ago

the atomic number tells you the number of _______ in one atom of an element. It also tells you the number of ______ in a neutral

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Explanation:

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Which of the following statements applies to all states of matter? A. Matter takes the shape of its container. B, Matter is made

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3 years ago

6 What is cell wall? where is it found? insy.​

6 What is cell wall? where is it found? insy.