Light is shining in the different objects shown. which of these materials absorbs the light most?

Answers

Answer 1
Answer: Hey! Ur in K12 2! I am in K12. lol. Anyways, the answer would be D. I think I've done this lesson before
Answer 2
Answer: I am almost 100% sure that it is D

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Which compound is an electrolyte?(I) CH3CHO (3) CH3COOH

(2) CH3OCH3 (4) CH3CH2CH3

Answers

Ch3COOH is an electrolyte for sure. So option “C” is the correct answer for this question. Electrolyte is actually a compound that dissolves easily in water and creates a solution that becomes a good conductor of electricity. The reason why the solution becomes a good conductor of electricity is due to the presence of free ions. There can be both strong and weak electrolytes. The compounds that release small number of free ions on dissolving in water are called weak electrolytes and those that release large number of ions are strong electrolytes.


The Correct answer is CH3COOH

The explanation:

when the electrolyte is: A substance that dissociates into ions in solution and acquires the capacity to conduct electricity.

- Electrolyte is actually a compound that dissolves easily in water and creates a solution that becomes a good conductor of electricity.

- The existence of free ions is the reason why the solution becomes a good conductor of electricity.

-The compounds that release small number of free ions on dissolving in water are called weak electrolytes

-and those that release large number of ions are strong electrolyte.

acetic acid partially dissociates in water to form two ions, H+ and CH3COO- , therefore making it a weak electrolyte

Which two cellular structures help cells move around?A.
nuclei and cell walls

B.
chloroplasts and endomembrane systems

C.
cilia and flagella

D.
ribosomes and mitochondria

Answers

It is nuclei and cell walls. Hope this helps!

If 6.5 mol NO2 react with 1.0 mol H20, how many moles of the excess reactantremains when the reaction is complete? 3NO2 + H2O + NO + 2HNO3

1.5 mol H20
2.5 mol H20
O 3.5 mol NO2
O 1.0 mol NO2

Answers

Answer:

3.5 moles of NO2.

Explanation:

The balanced equation for the reaction is given below:

3NO2 + H2O —> NO + 2HNO3

Next, we shall determine the excess reactant. This is illustrated below:

From the balanced equation above,

3 moles of NO2 reacted with 1 moles H2O.

Therefore, 6.5 moles of NO2 will react with = (6.5 x 1)/3 = 2.17 moles of H2O.

From the above calculations, we can see that it will take a higher amount i.e 2.17 moles than what was given i.e 1 mole of H2O to react completely with 6.5 moles of NO2.

Therefore, NO2 is the excess reactant and H2O is the limiting reactant.

Next, we shall determine the number of mole of the excess reactant that reacted in the reaction. This is illustrated below:

From the balanced equation above, we can see that 3 moles of NO2 reacted with 1 mole of H2O.

Finally, we shall determine the leftover mole of the excess reactant after the reaction. This is illustrated below:

Given mole of NO2 = 6.5 moles

Reacted mole of NO2 = 3 moles

Leftover mole of NO2 =...?

Leftover mole = Given mole – Reacted mole

Leftover mole of NO2 = 6.5 – 3

Leftover mole of NO2 = 3.5 moles.

Therefore, 3.5 moles of NO2 remained after the reaction.

Why is there a greater variety of compounds than of elements and atoms?

Answers

Despite the fact that there are over 100 elements .The elements containing  electron, proton neutron as well, could  be combined to create new things, making the possibilities unlimited.

What is elements?

A pure substance made up entirely of atoms with the same number of protons in each nucleus is known as an element.

What is electrons?

An electron is just a subatomic particle with a negative charge.  The energy levels of electrons in atoms are represented by spherical shells of different kinds of diameters. 

To know more about element click here.

brainly.com/question/13025901.

#SPJ2

because even though there are over 100 elements. all of those elements can combine into something else making the combinations endless.

What do you make when you hit a rock with a hammer

Answers

You create sound waves and moment from the rock and hammer.

What type of heat is transferred from hot water to metal and plastic forks?

Answers

Answer:

Kinetic energy is an energy that can be applied to another object, often considered the energy of motion.

Explanation:

Metals are generally good conductors of heat.

kinetic energy, hope that helps