Sam K

Please explain the steps.

Thanks!

Hello, I need some help with my chemistry homework.

At 25 degrees Celsius and 1.0 atmospheric pressure, a balloon contains a micture of four ideal gases: oxygen, nitrogen, carbon dioxide, and helium. The partial pressure due to each gas is 0.25 atmosphere. Use the ideas of the kinetic molecular theory to answer each of the following questions:

A.) Rank the gases in increasing order for the following and explain:

i.) Density:

ii.) Average Kinetic Energy:

iii.) Average Molecular Velocity:

B.) How would the volume of the balloon be affected by each of the following changes to the system?

i.) The gas mixture was replaced with an equal number of moles of pure Oxygen.

C.) What changes to the temperature and pressure of the gases would cause deviation from ideal behavior and which gas would be most affected.

If you know the answers to any OR all of them, please help me out and explain.

Thanks!

Hello, I've worked out this problem but I'm certain that the answers I got are wrong.

Group II metal (alkali earth metal) carbonates decompose when heated. You heat .158 grams of a white, solid alkali metal carbonate and find that the evolved gas has a pressure of 69.8 mmHg in a 285 mL flask at 24.8 degrees Celsius.

a.) Using X as the symbol for the unknown Group II metal, write a balanced chemical equation for the decomposition of the compound.

b.) Convert the pressure in mmHg to atm. (I got this one right)

c.) Calculate the number of moles of the evolved gas.

d.) Identify the alkali earth metal. Support your answer mathematically.

e.) If the products of this decomposition reaction are added to water in two sperate containers what will happen to the pH of the water in each container? Explain. (You can use a balanced chemical equation for part of your explanation).

Thanks! Please help me out if you know the answers!

Using only the periodic table, predict the most stable ion for Na, Mg, Al, S ,Cl, K, Ca and Ga. Arrange these atoms from largest to smallest radius and explain why the radius varies as it does.

Hey, if I wanted to write and publish a book that is basically a compilation of things I found on the internet and there are pictures and funny things I found on the internet in it (authorless things), do I have to be worried about any copyright laws?

Differentiate between what happens when the following are dissolved in water.

a. Polar Solute versus nonpolar solute

b. KF versus C6H1206

c. RbCl versus AgCl

d. HNO3 versus CO

To chlorine water we added NaOH

So we took Cl2 + NaOH

The net ionic is Cl2 + 2OH- ---------> ClO- + H2O + Cl-

What are the 2 side reactions (reduction/oxidization) and how would I write them?

So Playstation is giving us the choice of 2 out of 4 games for free on PSP. The choices are:

Little Big Planet

Killzone: Liberation

Modnation Racers

Persuit Force

I want to get Killzone: Liberation but I'm not sure if I would understand it.

So

Do I need to play Killzone 1 before playing Killzone: Liberation?

Please describe what happens at a molecular level and ionic level when a soluble salt like sodium chloride is placed in water.

The mean molar mass of the atmosphere at the surface of Titan, Saturn's largest moon, is 28.6 g/mol. The surface temperature is 95 K and the pressure is 1.6 atm. Assuming ideal behavior, calculate the density of Titan's atmosphere.

Please explain!

The mean molar mass of the atmosphere at the surface of Titan, Saturn's largest moon, is 28.6 g/mol. The surface temperature is 95 K and the pressure is 1.6 atm. Assuming ideal behavior, calculate the density of Titan's atmosphere.

The pressure of ozone (O3) in the stratosphere is 1.41 x 10^-7 atm and the temperature is -23.2 degrees Celsius. How many molecules are in 1.00 Liters under these conditions?

We're doing a project on the 1960's and need to do a presentation. It's a big event in the school and a lot of people will come and see. We need to do one about the 60's. We are planning to do a talk show followed by an interview of the Beatles. This is pretty boring.

Got any other ideas???

It can be a comedy skit, show, whatever!

I just need ideas.

Thanks.

We're doing a project on the 1960's and need to do a presentation. It's a big event in the school and a lot of people will come and see. We need to do one about the 60's. We are planning to do a talk show followed by an interview of the Beatles. This is pretty boring.

Got any other ideas???

It can be a comedy skit, show, whatever!

I just need ideas.

Thanks.

We have to do a presentation along with our project about the 1960's decade. We've decided to do a pretend show on which we highlight the 1960's and then have a pretend Beatles performance. I like the idea but it's kind of embarrassing, so I need other ideas for performances we can do. It can be a comedy, skit, anything. Just shoot me some ideas.

Thanks.

The Goodyear Blip has 5.11 x 10^6 liters of helium at 21.0 Celsius and 1.04 atm. What is the mass of the helium in the blimp?

I am close to the right answer but am stuck so can someone help me out here?

For my class project I have to do a presentation on things I would do before I die. Money is not an issue.

I want to do things that are really cool. Please suggest some cool places to visit or some fun and interesting activities to do.

So far I have:

Stay at space hotel.

Hang Glide.

Swim with dolphins.

African Safari.

Use a wingsuit.

Skydive.

Supersonic flight.

Stay at ice hotel.

Any ideas?

Querido amigo,

Hola! Nosotros estamos en Venice, Italia. El nombre de nos hostel es Residenza Santa Croce. El hostel tiene el aire acondicionado, la refrigeradora, y un televisión. El hostel cuesta $31.41 por noche. Nos quedamos aqui durante tres días. El hostel tiene desayuno continental. Nosotros comímos pan tostado, mantequilla, y jugo de naranja. Nosotros caminémos en el Puente de Rialto. También montémos un barco en el Gran Canal.

English:

Hello, we are in Venice, Italy. The name of our hostel is Residenza Santa Croce. The hostel has an air conditioner, a fridge, and a tv. The hostel costs $31.41 per night. We're staying here for 3 days. The hostel has a continental breakfast. We had toast, butter, and orange juice. We walked on the Rialto Bridge. We also rode a boat on the Grand Canal.

Please tell me if my Spanish is correct.

PLEASE DON'T USE GOOGLE TRANSLATE

I just need a proof read!

I'm having a little trouble translating this correctly to Spanish:

I walked on the bridge of Rialto. I also went on a boat ride on the Grand Canal.

Liquid Bromide is shaken in a test tube that contains an aqueous solution of sodium fluoride.

Do these even react? If no please explain.

Br (l) + NaF (aq) ------>