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prisoha [69]
3 years ago
9

Plz HELP ITS SCIENCE!

Chemistry
2 answers:
Levart [38]3 years ago
7 0
Cell Wall
1) Acts like skin.
2) Rigid.
3)Gives the plant cell its shape.



Cell Membrane
1) is not rigid.
2) More selectively controls what goes in and out of the cell.
Alexxx [7]3 years ago
6 0
Cell wall:
-acts like a skin
- most selectively controls what is inside and outside of the cell
-rigid

Cell membrane:
-gives a plant cell
-not rigid
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PLZ HELP IM CONFUSED
Marina CMI [18]

Answer:

9.1 mol

Explanation:

The balanced chemical equation of the reaction is:

CO (g) + 2H2 (g) → CH3OH (l)

According to the above balanced equation, 2 moles of hydrogen gas (H2) are needed to produce 1 mole of methanol (CH3OH).

To convert 36.7 g of hydrogen gas to moles, we use the formula;

mole = mass/molar mass

Molar mass of H2 = 2.02g/mol

mole = 36.7/2.02

mole = 18.17mol

This means that if;

2 moles of H2 reacts to produce 1 mole of CH3OH

18.17mol of H2 will react to produce;

18.17 × 1 / 2

= 18.17/2

= 9.085

Approximately to 1 d.p = 9.1 mol of methanol (CH3OH).

6 0
3 years ago
You are able to see yourself in the mirror because of the wave property of
Anton [14]

Answer: c) reflection

Explanation:

8 0
3 years ago
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How many moles of oxygen are required to react completely with 5 mol C8H18?
Nata [24]

Answer:

62.5 moles of O₂.

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

2C₈H₁₈ + 25O₂ —> 16CO₂ + 18H₂O

From the balanced equation above,

2 moles of C₈H₁₈ reacted with 25 moles of O₂.

Finally, we shall determine the number of mole of O₂ needed to react with 5 moles of C₈H₁₈. This can be obtained as shown below:

From the balanced equation above,

2 moles of C₈H₁₈ reacted with 25 moles of O₂.

Therefore, 5 moles of C₈H₁₈ will react with = (5 × 25) / 2 = 62.5 moles of O₂.

Thus, 62.5 moles of O₂ is needed for the reaction.

6 0
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If earth was a hard boiled egg,which part of earth would the egg white represent?
romanna [79]

Answer:

The egg white will represent the outer layer which is the we are located on!

Explanation:

6 0
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Which sub-atomic particle is positively charged and found in the nucleus?
Anarel [89]
The proton has a positive charge.
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