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JulijaS [17]
2 years ago
15

Why Farmers kill the silkworm inside the cocoon .​

Chemistry
1 answer:
liberstina [14]2 years ago
5 0

Answer:

It allows the completion of the metamorphosis of the silkworm to its moth stage, whereas most silk harvesting requires the silkworms to be killed in their cocoon stage. No animals suffer or die for the silk to be produced, making it a favorable alternative to normal silk for those who do not believe in harming animals.

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0.22 L of HNO3 is titrated to equivalence using 0.10 L of 0.1 MNaOH. What is the concentration of the HNO3?
White raven [17]

Answer:- Molarity of the acid solution is 0.045M.

Solution:- The balanced equation for the reaction of given acid and base is:

HNO_3+NaOH\rightarrow NaNO_3+H_2O

From the balanced equation, they react in 1:1 mol ratio. So, we could easily solve the problem using the equation:

M_aV_a=M_bV_b

where, M_a is the molarity of acid, M_b is the molarity of base, V_a is the volume of acid and V_b is the volume of base.

Let's plug in the given values in the equation:

M_a(0.22L)=0.1M(0.10L)

on rearranging the above equation:

M_a=\frac{0.1M(0.10L)}{0.22L}

M_a = 0.045M

So, the molarity of the acid solution is 0.045M.

3 0
3 years ago
What are the coefficients for the reaction _Cl2O5 + _H2O → _HClO3 once it is balanced?
Eva8 [605]
It is B (1,1,2) because when you plug those numbers in, there are the same amount of elements in the reactant and product, just rearranged as the format A+B <span>→  AB, because this is a synthesis reaction.</span>
7 0
2 years ago
Read 2 more answers
Tina drew an animal cell in her science notebook. What's wrong with the cell?
Lisa [10]

I know for certain, that chloroplast does not belong on that list, chloroplast only belongs inside of plant cells to produce energy required for the plant. I  am not sure about the era or er, but chloroplast does not belong.

Hope this helps, if not, comment below please!

7 0
3 years ago
What is the product of a reaction between a strong acid and a sulfite ion (which acts as a base)?
melamori03 [73]

SO_{2} is the product of a reaction between a strong acid and a sulfite ion (which acts as a base).

A chemical reaction in which an acid and a base interact quantitatively is known as neutralisation or neutralisation. By neutralising a reaction in water, surplus hydrogen or hydroxide ions are removed from the solution.

Despite being a weak base, the sulfite ion can hydrolyze to form basic solutions. The equilibria in an acidic solution are changed to create sulphurous acid, which leads to the development of SO2 gas. A colourless gas with a distinctive suffocating smell, sulphur dioxide.

The reaction mechanism is as follows;

SO_{3}^{2-} (aq) + H_{2} O(l) ⇒ HSO_{3} ^{-} (aq) + OH^{-} (aq)

HSO_{3} ^{-} (aq) + H_{2} O(l) ⇒ H_{2} SO_{3} (aq) + OH^{-} (aq)

H_{2} SO_{3} (aq) ⇒ H_{2} O (l) + SO_{2} (g)

Therefore, SO_{2} is the product of a reaction between a strong acid and a sulfite ion (which acts as a base).

Learn more about neutralization reaction here:

brainly.com/question/15095136

#SPJ4

3 0
1 year ago
Name and symbol for the first 20 elements.​
velikii [3]

Answer:

H - Hydrogen

He - Helium

Li - Lithium

Be - Beryllium

B - Boron

C - Carbon

N - Nitrogen

O - Oxygen

F - Fluorine

Ne - Neon

Na - Sodium

Mg - Magnesium

Al - Aluminum

Si - Silicon

P - Phosphorus

S - Sulfur

Cl - Chlorine

Ar - Argon

K - Potassium

Ca - Calcium

Explanation:

4 0
2 years ago
Read 2 more answers
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