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dybincka [34]
3 years ago
13

An earthworm is slithering on a sidewalk towards a grassy lawn which organelles activity contributes most directly to muscle con

traction in an earthworm
1.golgi bodies
2. Chloroplasts
3.mitochondria
4. Lysosomes
Chemistry
1 answer:
givi [52]3 years ago
5 0

Answer:

3. Mitochondria

Explanation:

Numerous mitochondria are found in each muscle cell to provide metabolic energy for muscle contraction.

hope i helped (:

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An organic compound that contains a carbonyl group with a cell wall. They are only found in plants and bacteria
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Positive Deviation from Raoult's Law occurs when the vapour pressure of component is greater than what is expected in Raoult's L
8090 [49]

Answer:

All of the above.

Explanation:

In positive deviation from Raoult's  Law occur when the vapour pressure of components is greater than what is expected value in Raoult's law.

When a solution is non ideal then it shows positive or negative deviation.

Let two solutions A and B to form non- ideal solutions.let the vapour pressure  of component A is P_A and vapour pressure of component B is P_B.

P^0_A= Vapour pressure of component A in pure form

P^0_B= Vapour pressure of component B in pure form

x_A=Mole fraction of component A

x_B==Mole fraction of component B

The interaction between A- B is less than the interaction A- A and B-B interaction.Therefore, the escaping tendency of liquid molecules in mixture is greater than the escaping tendency in pure form.Hence, the vapour pressure of a mixture is greater than the initial value of vapour pressure.

P_A >P^0_A\cdot x_A,P_B>P^0_B\cdot x_B

Therefore, P_A+P_B >P^0_A\cdot x_A+P^0_B \cdot x_B

Therefore, the enthalpy of mixing is greater than zero and change in volume is greater than zero.

Hence, option a,b,c and d are true.

6 0
3 years ago
A chemical reaction is when substance are changed into other substances.<br><br> True or False
Dmitriy789 [7]

Answer:

True

Explanation:

coz it is when one or more substances are mixed to produce one substance

5 0
2 years ago
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3 years ago
As a roller coaster is going UP the first hill, what is happening to the KE?
SpyIntel [72]

Explanation:

It should be decreasing, and the potential energy increasing, since Law of Conversation of Energy, right?

Also, if you think about what happens when it goes down, it loses potential and gains kinetic, so maybe the opposite should happen when it goes up.

7 0
3 years ago
Read 2 more answers
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