During what phase of mitosis do the chromosomes pull apart and begin to form two new cells?

Which statements best describe conduction? Check all that apply.

Gennadij [26K]

The statements that best describe conduction are

-Conduction can occur within a substance or between two substances.

-Fast-moving molecules collide with slow-moving molecules.

-Thermal energy is transferred from a warmer substance to a cooler substance.

Explanation :

-Conduction can occur within a substance or between two substances.

Conduction can occur within a substance, but the heat will transfer by conduction only when those parts of the substance are at different temperatures.

For example, when we hold a metal rod over a flame, the end which is in direct contact with the flame becomes hot first. As we continue to heat, the other end of the rod also becomes hot because heat gets transferred through the rod by conduction.

Similarly heat can also be transferred between 2 substances which are in direct contact with each other.

In the above example, when a person is holding the other end of the rod, their hand might burn. In this case heat is transferred between 2 objects ( rod & hand) which are in direct contact by conduction.

-Fast-moving molecules collide with slow-moving molecules.

When an object heated, the molecules gain thermal energy and start vibrating. These vibrating molecules transfer their kinetic energy to neighboring molecules which are at lower temperature and hence are slow moving. This transfer occurs till both of them attain the same temperature.

-Thermal energy is transferred from a warmer substance to a cooler substance.

Thermal energy is always transferred from a warmer substance to a cooler substance. In conduction mode, heat is transferred by transfer of kinetic energy from fast moving molecules to slow moving molecules.

4 0

4 years ago

Read 2 more answers

en un recipiente se tiene 800 g de una solución al 35% en masa de ácido sulfuroso, de la cual se evapora 80ml de agua. ¿cuál es

Alinara [238K]

The mass percent of sulfurous acid in the new solution : 38.9%

<h3>Further explanation</h3>

<em>In a container you have 800 g of a 35% by mass solution of sulfurous acid, from which 80 ml of water evaporates. What is the mass percent of sulfurous acid in the new solution? data: density of water is 1g / ml.</em>

<em />

solution 1

composition :

35% acid :

$\tt 0.35\times 800~g=280~g$

water :

$\tt 800-280=520~g$

solution 2(new solution)

composition :

water

$\tt 520-(80~ml\times 1~g/ml)=440~g$

Total mass of new solution after water evaporated

$\tt 280(acid)+440(water)=720~g$

%mass of acid in a new solution

$\tt \dfrac{280}{720}\times 100\%=38.9\%$

5 0

3 years ago

Science-HELP ME IDK THE ANSWER TO THIS

zzz [600]

Answer:

Explanation:

its b i did this i k its gonna be right

8 0

3 years ago

The compound sodium carbonate is a strong electrolyte. Write the reaction when solid sodium carbonate is put into water:

Ludmilka [50]

The compound sodium carbonate is a strong electrolyte because it completely dissociates when placed in water into its component ions. The equation of the reaction can be expressed as:

$Na_2CO_3_{(s)} ---> 2 Na^+_{(aq)} + CO_3^{(2+)}_{(aq)}$

The dissociation leads to the formation of sodium and carbonate ions with the latter held together by its internal covalent bond.

This is unlike weak electrolytes that do not dissociate completely in water or aqueous solutions. Only a small fraction of the solute exists as ions in the solution.

More on strong and weak electrolytes can be found here: brainly.com/question/3410548

7 0

3 years ago

In one meter there are how many milimeters?

Anastasy [175]

In one meter, there is 10000 milimeters. Just multiply however many meters you have by 10000, and youll have your answer.
~Silver

8 0

3 years ago