CHEMISTRY MIDDLE SCHOOL

Which part of the human ear is part of the inner ear? A)cochlea
B)oval window
C)ear canal
D)Hammer

Answers

Answer 1

Answer: Cochlea is present in inner ear !!

So go with A !!
if you need more info on that ; comment !!

Answer 2

Answer:

Answer: cochlea

The cochlea is responsible for turning sound waves which is what makes you hear.

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Explain whether smoke filling up a room is diffusion or not.

Answers

yes it is diffusion ..
explanation :
diffusion is the movement of particles from high concentration to low concentration ..
as the smoke rises at one corner of the room soon it spreads all over the room which is simply diffusion ..

Yes this is diffusion because diffusion is the movement of particles from high concentration to low concentration, so when smoke go up in one corner then the smoke goes all over the room which is diffusion.

Is skin cancer sex linked

Answers

Sexually tranmsitted? No. Genetic? You can be more suseptible to certaincancers for genetic reasons, but you can't have cancer in your geneticmakeup. Cancer is indeed a mutation of the cells, where they forget tonaturally die off, and spread.

Water initially present in a state where molecules are far apart. During a chnge of state, its molecules slow down. Which change of state has most likely taken place?A. From gas to a liquid
B. From a liquid to gas
C. From solid to liquid
D. From a gas to plasma

Answers

Answer:

is the letter A. from gas to a liquid

If you pump 40.088g of octane (C8H18) into your gas tank, how mant molecules of octane are you pumpingplease help ASAP will give the brainliest

Answers

Answer:

2.11 × 10²³ molecules of octane

Explanation:

Given data:

Mass of octane = 40.088 g

Molecules of octane = ?

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

For example,

18 g of water = 1 mole = 6.022 × 10²³ molecules of water

1.008 g of hydrogen = 1 mole = 6.022 × 10²³ atoms of hydrogen

Number of moles of octane:

Number of moles = mass/ molar mass

Number of moles = 40.088 g / 114.23 g/mol

Number of moles = 0.351 mol

Number of molecules:

one mole of octane = 6.022 × 10²³ molecules of octane

0.351 mole of octane = 0.351 × 6.022 × 10²³ molecules of octane

2.11 × 10²³ molecules of octane

What happens to the average kinetic energy of gas particles as the temperature increases?a.) Increases

b.) Decreases

c.) Remains the same

d.) Volume changes