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3 years ago

PLEASE HELP ASAP I NEED HEP PLEASE ITS DUE TODAY

Chemistry

1 answer:

Andreas93 [3]3 years ago

7 0

(May not be 100% correct as there may be more context, but I hope this helps! Have a nice day!)

We can tell it won't be Claim 1 as Claim 1 compares a reddish-brown substance to a gray/white substance.

I am going to go with Claim 3 is most supported by the evidence because of the three descriptions of the different substances, none of them match.

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Kim is doing an experiment with sound waves. She tested to see how quickly a sound wave could travel through three different mat

Semenov [28]

Answer:

<h2>"The sound wave traveled more quickly through the water than the balloon."</h2>

Explanation:

A sound is produced by vibration. These vibrations are called "sound waves." In order for sound waves to travel, it needs a particular medium. This medium can either be solid, liquid or gas.

Remember that sound waves travel faster in a "solid medium," because this matter is denser than the other two. Sound waves travel faster in liquid than in gas, because water is densely packed with particles than gas (such as air).

In the situation above, the answer is "The sound wave traveled more quickly through the water than the balloon." As I've mentioned earlier, sound waves travel faster in liquid than in gas. Thus, the sound waves traveled faster through the glass of water (liquid) than the helium (gas) balloon.

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3 years ago

Consider the following reaction: COCl2(g) ⇌ CO(g) + Cl2(g) A reaction mixture initially contains 1.6 M COCl2. Determine the equi

professor190 [17]

Answer:

The equilibrium concentration of CO is 0.0361 M

Explanation:

Step 1: Data given

Kc = 8.33 *10^-4

Molarity of COCl2 = 1.6 M

Step 2: The balanced equation:

COCl2(g) ⇌ CO(g) + Cl2(g)

Step 3: Calculate final concentrations

The initial concentration of COCl2 = 1.6M

The initial concentration of CO and Cl2 = 0M

There will react xM of COCl2

Since the mole ratio is 1:1

The final concentration of CO and Cl2 will be X M

The final concentration of COCl2 will be (1.6 -X)M

Step 4: Define Kc

Kc= [CO] *[Cl2] / [COCl2] = 8.33*10^-4

Kc = X*X / 1.6-X = 8.33 * 10^-4

8.33 * 10^-4 = X² /(1.6-X)

8.33 * 10^-4 *(1.6 -X) = X²

0.0013328 - 8.33*10^-4 X = X²

X² + 8.33*10^-4 X - 0.0013328= 0

X = 0.0361 M = [CO] = [Cl2]

[COCl2] = 1.6 - 0.0361 = 1.5639 M

To control this we can calculate the Kc

(0.0361*0.0361)/1.5639 = 0.000833

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3 years ago

What is the atomic mass of one mole of H? g/mole

Oksanka [162]

For one mole of hydrogen, H, the atomic mass is 1 g per mole. Hydrogen contains 1 proton and zero neuton. A neutral atom of hydrigen also contains 1 electron.

7 0

3 years ago

Read 2 more answers

Heptane and water do not mix, and heptane has a lower density (0.684 g/mL) than water (1.00 g/mL). A graduated cylinder contains

Alekssandra [29.7K]

Answer:

TRY HARD!

Explanation:

DO UR WORK ANG GET IT DONE!

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1 year ago

What happens to Earth when it is farthest from the sun?

Nata [24]

Answer:

Explanation:

The Earth is closest to the Sun, or at the perihelion, about 2 weeks after the December Solstice, when it is winter in the Northern Hemisphere. Conversely, the Earth is farthest away from the Sun, at the aphelion point, 2 weeks after the June Solstice, when the Northern Hemisphere is enjoying warm summer months.

Therefore, most countries might have two or four seasons.

hope this helps.

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3 years ago