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2 years ago

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What is the purpose of cell wall

2 answers:

xeze [42]2 years ago

8 0

Answer:

The purpose of a cell wall is to keep everything inside safe.

Kamila [148]2 years ago

8 0

Answer:

The CORRECT answer is C. it supports and protects the cell

Explanation:

I just did a assignment and yes this is correct think about it it is called the cell WALL. hope this helps :)

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A hiker has packed a bag of chips as a snack. At the start of the hike the pressure was 1.5 atm and the temperature was 35*C. At

Mazyrski [523]

According to <span>Gay-Lussac's Law the temperature and Pressure are directly proportional to each other if the amount and volume of given gas are kept constant.
Mathematically for initial and final states it is expressed as,

P</span>₁ / T₁ = P₂ / T₂ ----- (1)
Data Given;
P₁ = 1.5 atm

T₁ = 35 °C + 273 = 308 K

P₂ = ?

T₂ = 0 °C + 273 = 273 K

Solving Eq. 1 for P₂,

P₂ = P₁ T₂ / T₁

Putting values,
P₂ = (1.5 atm × 273 K) ÷ 308 K

P₂ = 1.32 atm
Result:
As the temperature is decreased so the pressure also decreases from 1.5 atm to 1.32 atm. Therefore the bag will contract.

5 0

3 years ago

Is pellet of sodium is cut into two parts physical or chemical change?

Klio2033 [76]

Answer:

physical change

Explanation:

the cutting doesnt change the chemical structure of the sodium

7 0

3 years ago

For The Reaction CH3COOH ---> CH3COO- + H+, which of the following statements is true? A.) Ch3COOH is a Bronsted Lowry base.

Savatey [412]

Answer: Option (C) is the correct answer.

Explanation:

According to Arrhenius, bases are the species which when dissolved in water will give hydroxide ions, that is, $OH^{-}$ .

For example, $NaOH + H_{2}O \rightarrow Na^{+} + OH^{-}$

Arrhenius acids are the species which when dissolved in water will give hydrogen ions, that is, $H^{+}$ .

For example, $CH_{3}COOH + H_{2}O \rightleftharpoons H_{3}O^{+} + CH_{3}COO^{-}$

In water, when an acid loses a hydrogen ion then the specie formed is known as conjugate base.

Here, $CH_{3}COO^{-}$ is the conjugate base of $CH_{3}COOH$ .

Similarly, species which accept the hydrogen ion result in the formation of conjugate acid.

Hence, $H_{3}O^{+}$ is the conjugate acid of $H_{2}O$ .

Thus, we can conclude that $CH_{3}COO^{-}$ is the conjugate base.

7 0

3 years ago

Read 2 more answers

It takes 338. kJ/mol to break an carbon-chlorine single bond. Cal broken by absorbing a single photon Iculate the maximum wavele

vodomira [7]

Answer:

354 nm

Explanation:

$E=\frac{h\times c}{\lambda}$

Where,

h is Plank's constant having value $6.626\times 10^{-34}\ Js$

c is the speed of light having value $3\times 10^8\ m/s$

$\lambda$ is the wavelength of the light

So, Given that:- Energy = 338. kJ/mol = 338000 J/mol

Also, $N_a=6.023\times 10^{23}\ {mol}^{-1}$

So, Energy for single photon = $\frac{338000}{6.023\times 10^{23}}\ J$

Applying the values in the above equation as:-

$\frac{338000}{6.023\times 10^{23}}=\frac{6.626\times 10^{-34}\times 3\times 10^8}{\lambda}$

$69\times \:10^{26}\lambda=5^{20}\times \:62770482.511$

$\lambda=354\times 10^{-9}\ m=354\ nm$

5 0

2 years ago

Students in science class watched as their teacher demonstrated various changes. Picture A. shows a strip of magnesium ribbon, a

Salsk061 [2.6K]

I think the answer is B).

8 0

3 years ago

Read 2 more answers