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dezoksy [38]
2 years ago
8

cell wall A structure in a cell that receives proteins and other newly formed materials from the endoplasmic reticulum, packages

them, and distributes them to other parts of the cell. O Long, thin fibers that function in the movement and support of the cell O A double layer of phospholipids that makes up plasma and organelle membranes. O A rigid layer of nonliving material that surrounds the cells of plants and some other organisms.​
Chemistry
1 answer:
Vilka [71]2 years ago
4 0

Hello! I believe you are asking what a Cell wall Is.

Answer:

<em> A rigid layer of nonliving material that surrounds the cells of plants and some other organisms.</em>

Explanation:

A cell wall is<u><em> a sturdy outer layer of protection of the plant cell. It protects the cell membrane and other organelles from the environment, bacteria, and viruses</em></u>. It is composed of cellulose, lignin, and suberin interspersed with carbohydrates and proteins.

Hope this Helps!

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. Element X has a nucleon (mass) number of 19 and a proton (atomic) number of 9.
Marina86 [1]

Answer:

C

Explanation:

it belong to that group as it needs 1 electron to be chemically stable

7 0
3 years ago
Which of the following is considered an alternative energy resource?
ELEN [110]
B. Biomass

(I guess so cause other ones are already being used)
4 0
3 years ago
If the mass of a liquid reactant is 10g and the mass of a powder reactant is 5g then what should the mass of the product be acco
guapka [62]

Answer:15g

Explanation:

According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.

10g + 5g ➡️ 15g

6 0
3 years ago
Methanol (ch3oh), also called methyl alcohol, is the simplest alcohol. it is used as a fuel in race cars and is a potential repl
erica [24]

Answer:

             %age Yield  =  51.45 %

Solution:

Step 1: Convert Kg into g

68.5 Kg CO  =  68500 g CO

8.60 Kg H₂  =  8600 g

Step 2: Find out Limiting reactant;

The Balance Chemical Equation is as follow;

                                 CO  +  2 H₂    →    CH₃OH

According to Equation,

                   28 g (1 mol) CO reacts with  =  4 g (2 mol) of H₂

So,

                    68500 g CO will react with  =  X g of H₂

Solving for X,

                    X  =  (68500 g × 4 g) ÷ 28 g

                    X  =  9785 g of H₂

It shows 9785 g H₂ is required to react with 68500 g of CO but we are provided with 8600 g of H₂ which is less than required. Therefore, H₂ is provided in less amount hence, it is a Limiting reagent and will control the yield of products.

Step 3: Calculate Theoretical Yield

According to equation,

            4 g (2 mol) H₂ reacts to produce  =  32 g (1 mol) Methanol

So,

                          8600 g H₂ will produce  =  X g of CH₃OH

Solving for X,

                    X  =  (8600 g × 32 g) ÷ 4 g

                     X =  68800 g of CH₃OH

Step 4: Calculate %age Yield

                     %age Yield  =  Actual Yield ÷ Theoretical Yield × 100

Putting Values,

                     %age Yield  =  3.54 × 10⁴ g ÷ 68800 g × 100

                     %age Yield  =  51.45 %


5 0
4 years ago
How many milliliters of 4.00 M NaOH are required to exactly neutralize 50.0 milliliters of a 2.00 M solution of HNO3 ?
kramer

Answer: The volume of NaOH required is 25.0 ml

Explanation:

According to the neutralization law,

n_1M_1V_1=n_2M_2V_2

where,

n_1 = basicity HNO_3 = 1

M_1 = molarity of HNO_3 solution = 2.00 M

V_1 = volume of  HNO_3 solution = 50.0 ml

n_2 = acidity of NaOH = 1

M_1 = molarity of NaOH solution = 4.00 M

V_1 = volume of  NaOH solution =  ?

Putting in the values we get:

1\times 2.00\times 50.0=1\times 4.00\times V_2

V_2=25.0ml

Therefore, volume of NaOH required is 25.0 ml

3 0
3 years ago
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