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April 18, 2014

Search: 5. A breathing mixture used by deep-sea divers contains helium, oxygen, and carbon dioxide. What is the partial pressure of oxygen at 101.4 kPa if PHe = 82.5 kPa and= 0.4 kPa?

Number of results: 36,298

chemistry
A breathing mixture used by deep-sea divers contains helium, oxygen, and carbon dioxide. What is the partial pressure of oxygen at 101.4 kPa ifpHe = 82.5 kPa and pCO2 = 0.4 kPa
Tuesday, July 29, 2008 at 1:11pm by natasha

Chemistry
Helium - oxygen mixture is used by deep sea divers in preference to nitrogen - oxygen mixture. Why?
Sunday, April 8, 2012 at 1:21pm by Molly(its urgent)

chemistry
A bearthing mixture used by deep-sea divers contains helium, oxygen, and carbon dioxide. What is the partial pressure of oxygen at 1.2 atm if PHe = 0.98 atm and PCO2 = 0.04 atm? a) 1.02 atm b) 0.12 atm c) 0.94 atm d) 0.18 atm
Wednesday, March 16, 2011 at 5:19pm by Logan

chemistry
A sample of a breathing mixture for divers comtained 34.3% helium, 51.7% nitrogen, and 14% oxygen, by mass. What is the density of this mixture at 22degree celcius and 755mmHG?
Tuesday, May 24, 2011 at 2:26pm by Vicky

chemistry
A sample of a breathing mixture for divers contained 34.3% helium, He; 51.7% nitrogen, N2; and 14.0% oxygen, O2 (by mass). What is the density of this mixture at 22C and 748 mmHg?
Sunday, October 24, 2010 at 8:39pm by caroline

Chemistry
A heliox deep-sea diving mixture contains 2.0 g of oxygen to every 98.0 g of helium.What is the partial pressure of oxygen when this mixture is delivered at a total pressure of 8.9atm ?
Thursday, March 20, 2014 at 12:16am by Anonymous

Chemistry 105
A heliox deep-sea diving mixture contains 2.0 g of oxygen to every 98.0 g of helium. What is the partial pressure of oxygen when this mixture is delivered at a total pressure of 9.3 atm?
Sunday, October 23, 2011 at 5:27pm by JULIE

Chem
A heliox deep-sea diving mixture contains 2.0 g of oxygen to every 98.0 g of helium. What is the partial pressure of oxygen when this mixture is delivered at a total pressure of 8.0 atm? This is a new chapter were covering and i have no idea how to do this?
Friday, October 15, 2010 at 6:44pm by marsha

Chemistry
Helium-oxygen mixtures are used by divers to avoid the bends and are used in medicine to treat some respiratory ailments. What percent (by moles) of helium is present in a helium-oxygen mixture having a density of 0.538 g/L at 25 degrees C and 721mmHg? Express your answer ...
Sunday, October 10, 2010 at 9:34pm by Ellen

Chemistry
Helium-oxygen mixtures are used by divers to avoid the bends and are used in medicine to treat some respiratory ailments. What percent (by moles) of Helium is present in a helium-oxygen mixture having a density of 0.538 g/L at 25 degrees C and 721 mmHg? Express your answer ...
Sunday, October 10, 2010 at 9:36pm by Ellen

chemistry
Helium-oxygen mixtures are used by divers to avoid the bends and are used in medicine to treat some respiratory ailments. What percent (by moles)of He(g) is present in a helium-oxygen mixture having a density of 0.538g/L at 25celsius and 721mmHg ?
Friday, September 26, 2008 at 8:17pm by tomi

Chemistry
Helium-oxygen mixtures are used by divers to avoid the bends and are used in medicine to treat some respiratory ailments. What percent (by moles) of is present in a helium-oxygen mixture having a density of 0.498 at 25 and 721 ?
Sunday, October 7, 2012 at 6:09pm by Ayesha

Physics, Chemistry, Science
The majority of gas used in most SCUBA tanks is compressed air. This air is composed of the same elements everywhere - 21% Oxygen 79% Nitrogen. Advanced SCUBA divers may use an "enhanced" mixture of 32% (up to about 40%) Oxygen with the balance being Nitrogen. The number of ...
Monday, November 18, 2013 at 11:30pm by Elena

chemistry
Helium-oxygen mixtures are used by divers to avoid the bends and are used in medicine to treat some respiratory ailments. What percent (by moles) of He is present in a helium-oxygen mixture having a density of 0.528g/L at 25 degree celsius and 721 mmHg ?
Saturday, May 4, 2013 at 7:39pm by molly

Chemistry (URGENT)
A gas mixture with a total pressure of 770 contains each of the following gases at the indicated partial pressures: CO2 , 249mmHg ; , Ar 114mmHg ; and , O2 174mmHg . The mixture also contains helium gas. 1. What is the partial pressure of the helium gas? 2. What mass of helium...
Wednesday, December 15, 2010 at 9:58pm by Ashley

chem 105
A gas mixture with a total pressure of 745mmHg contains each of the following gases at the indicated partial pressures: CO2, 257 mmHg; Ar, 123mmHg; and O2, 160 mmHg. The mixture also contains helium gas. What is the partial pressure of the helium gas? What mass of helium gas ...
Sunday, October 23, 2011 at 6:52pm by JULIE

chemistry
A gas mixture with a total pressure of 745mmHg contains each of the following gases at the indicated partial pressures: CO2, 257 mmHg; Ar, 123mmHg; and O2, 160 mmHg. The mixture also contains helium gas. What is the partial pressure of the helium gas? What mass of helium gas ...
Sunday, October 23, 2011 at 7:13pm by samantha(very important)

Physics
Why does the blood of deep sea divers look greenish-black in underwater photographs taken with natural light, but red when flashbulbs are used?
Friday, February 29, 2008 at 4:15pm by bob

Chemistry
A heliox deep-sea diving mixture delivers an oxygen partial pressure of 0.20 atm when the total pressure is 13.0atm .What is the partial pressure of helium in this mixture?
Friday, April 27, 2012 at 5:23pm by Jessica

Chemistry 105
A gas mixture with a total pressure of 745 mmHg contains each of the following gases at the indicated partial pressures: CO2, 257 mmHg; Ar, 123 mmHg; and O2, 160 mmHg. The mixture also contains helium gas. What is the partial pressure of the helium gas? What mass of helium gas...
Sunday, October 23, 2011 at 5:34pm by JULIE

chem
Helium-oxygen mixtures are used by divers to avoid the bends and are used in medicine to treat some respiratory ailments. What percent (by moles)of He(g) is present in a helium-oxygen mixture having a density of 0.538g/L at 25celsius and 721mmHg ? Responses chemistry - ...
Friday, September 26, 2008 at 10:02pm by tomi

physics
why dose the blood of an injured deep-sea divers look greenish-black in underwater photographs taken with natural light, but red when flashbulbs are used?
Sunday, March 2, 2008 at 2:44am by ann

chemistry
why must scuba divers ascend to the surface at a controlled rate after a deep sea dive?
Sunday, February 5, 2012 at 8:35pm by Green

Chemistry
A gas mixture with a total pressure of 750 mmHg contains each of the following gases at the indicated partial pressures: , 265 mmHg; Ar 134 mmHg; and ,O2 157 mmHg; The mixture also contains helium gas.
Tuesday, November 9, 2010 at 12:27am by Lisa

HELP
A volume of 18.0 L contains a mixture of 0.250 mole N2 , 0.250 mole O2 , and an unknown quantity of He. The temperature of the mixture is 0 ∘C , and the total pressure is 1.00 atm . How many grams of helium are present in the gas mixture?
Thursday, July 18, 2013 at 1:17am by Anonymous

Chemistry
A helium ballon contains 0.32g of helium. Given the molecular weight of helium is 4. How many moles of helium does it contain.
Monday, March 31, 2014 at 2:29pm by Anonymous

Chemistry
A helium balloon contains 0.54g of helium. Given the molecular weight of helium is 4.0 g/mol, how many moles of helium does it contain?
Friday, February 22, 2013 at 6:10pm by Mira

chemistry
A 6.0 L flask contains a mixture of methane, argon and helium at 45 degrees C and 1.75 am. If the mole fractions of helium and argon are 0.25 and 0.35, respectively, how many molecules of methane are present?
Tuesday, March 1, 2011 at 8:23pm by Katie

physics
Cliff divers at Acapulco jump into the sea from a cliff 37.1 m high. At the level of the sea, a rock sticks out a horizontal distance of13.39 m. The acceleration of gravity is 9.8 m/s^2. With what minimum horizontal velocity must the cliff divers leave the ...
Tuesday, February 19, 2013 at 11:29am by emma

chem
A blood sample contains several different types of cells, each of which contains different combinations of specific ions and molecules. The cells are suspended in water, and the water also contains many molecules and ions. Which term or terms could be used to describe this ...
Monday, September 24, 2007 at 2:16am by K

physics
assume a diver breathes a mixture of Oxygen and Helium. by weight what ratio of helium to oxygen must be used if the diver is at an ocean depth of 50 meters?
Friday, June 15, 2012 at 8:53am by Anonymous

chemistry
A helium balloon contains 0.26 g of helium. How many moles of helium does it contain?
Monday, November 17, 2008 at 9:12pm by pip

english
Scientist report that creatures living in the deep sea are in danger of starving to death. Millions of undiscovered species live in the deep sea. Creatures in the seabed are suffering from growing food shortages, which may be a result of rising sea temperatures. Scientist ...
Wednesday, February 6, 2013 at 12:53pm by matt

chemistry
A helium-filled balloon of the type used in long-distance flying contains 420,000 ft3 (1.2 times 107 L) of helium. Suppose you fill the balloon with helium on the ground, where the pressure is 737 mm Hg and the temperature is 16.0 C. When the balloon ascends to a height of 2 ...
Friday, March 30, 2007 at 1:27am by Helpme

chemistry
The diving atmosphere used by the U.S. Navy in its undersea Sea-Lab experiments consisted of 0.036 mole fraction O2 and 0.058 mole fraction N2, with helium (He) making up the remainder. What are the masses of nitrogen, oxygen, and helium in a 7.22-g sample of this atmosphere?
Monday, December 20, 2010 at 9:37am by Nagaa

PHYSICS
A bathysphere used for deep sea exploration has a radius of 1.60 m and a mass of 1.20 104 kg. In order to dive, the sphere takes on mass in the form of sea water. Determine the mass the bathysphere must take on so that it can descend at a constant speed of 1.00 m/s when the ...
Thursday, November 11, 2010 at 6:08pm by A

Chem 151
The atmosphere in a sealed diving bell contained oxygen and helium. If the gas mixture has 0.200 atm of oxygen and a total pressure of 3.00 atm, calculate the mass of helium in 10.0 L of the gas mixture at 40 degrees Celsius.
Thursday, March 21, 2013 at 9:50pm by Double checking ans

physics
A bathysphere used for deep sea exploration has a radius of 1.60 m and a mass of 1.20 104 kg. In order to dive, the sphere takes on mass in the form of sea water. Determine the mass the bathysphere must take on so that it can descend at a constant speed of 1.00 m/s when the ...
Tuesday, December 4, 2012 at 5:13pm by sjust

physics
A Goodyear blimp typically contains 5400m^3 of helium (He) at an absolute pressure of 1.1*10^5Pa. The temperature of the helium is 280K. What is the mass (in kg)of the helium in the blimp? PLEASE GIVE ME SOME IDEAS TO DO IT!!!THANKS A LOT!!!
Thursday, February 21, 2008 at 9:30pm by Amanda

english
Scientists report (1) that creatures living in the deep sea are in danger of starving to death. Millions of undiscovered species live, in the deep sea. Creatures in the seabed are suffering from growing food shortages. Which may be a result of rising sea temperatures. ...
Wednesday, February 6, 2013 at 12:53pm by matt

Physics
A bathysphere used for deep sea exploration has a radius of 1.50 m and a mass of 1.20 104 kg. In order to dive, the sphere takes on mass in the form of sea water. a) Determine the mass the bathysphere must take on so that it can descend at a constant speed of 1.20 m/s when ...
Sunday, November 21, 2010 at 7:41pm by Sydney

Physics please help !
A Goodyear blimp typically contains 4770 m3 of helium (He) at an absolute pressure of 1.10 x 105 Pa. The temperature of the helium is 274 K. What is the mass (in kg) of the helium in the blimp? You asked this twice. See my response to your later post.
Friday, December 1, 2006 at 1:34am by maysam

English
1. How is paraphrasing different from summarizing? A.) Paraphrasing uses quotation marks B.) Paraphrasing only contains the most important details C.) Paraphrasing expresses the same concept with different wording I think it is B or C..? 2. You are writing a paper about ...
Monday, April 7, 2014 at 8:05pm by Cassie

English: Please Help
I do have some corrections made but my computer wont let me copy and paste the part I did. Please Help. This is the uncorrected version: Scientists report that creatures living in the deep sea are in danger of starving to death. Millions of undiscovered species live, in the ...
Tuesday, March 4, 2014 at 11:53am by Cassie

Chemistry
Sea water conducts electricity. Which statements give the best explanation for this a) Ions are able to move around in sea water b) Electrons can pass from ion to ion in the sea water c) The sea water contains more ions with positve charges than ions with negative charges d) ...
Saturday, November 6, 2010 at 8:14am by peter

SOCIALS
deep sea, or concerning with the sea
Thursday, June 11, 2009 at 7:43pm by ELINA

Chem
Please tell me if these are right? A mixture of oxygen and helium is prepared for a scuba diver that will descend to 125 feet below the ocean surface. At that depth the diver breathes a gas mixture that has a total pressure of 8atm. If the particle pressure of the oxygen in ...
Monday, November 29, 2010 at 1:29pm by Lindsay

english
Scientist report<~~Something's wrong here; it needs to be either "Scientists report" or "A scientist reports" Which do you mean? that creatures living in the deep sea are in danger of starving to death. Millions of undiscovered species live in the deep sea. Creatures in the...
Monday, February 18, 2013 at 11:19am by Writeacher

health
What does it mean to relax with deep breathing?
Saturday, September 22, 2012 at 12:32am by Anonymous

Physics
A Goodyear blimp typically contains 4770 m3 of helium (He) at an absolute pressure of 1.10 x 105 Pa. The temperature of the helium is 274 K. What is the mass (in kg) of the helium in the blimp? A Goodyear blimp typically contains 4770 m3 of helium (He) at an absolute pressure ...
Friday, December 1, 2006 at 12:42am by maysam

health
think positive,be confident,and relax with deep breathing
Thursday, April 4, 2013 at 10:09pm by Anonymous

grammar
Scientists report (1) that creatures living in the deep sea are in danger of starving to death. Millions of undiscovered species live, in the deep sea. Creatures in the seabed are suffering from growing food shortages. Which may be a result of rising sea temperatures. ...
Wednesday, February 6, 2013 at 12:35pm by matt

english
Scientists report (1) THAT CREATURES LIVING IN THE DEEP SEA ARE IN DANGER OF STARVING TO DEATH. Millions of undiscovered species live, in the deep sea. Creatures in the seabed are suffering from growing food shortages. Which may be a result of rising sea temperatures. ...
Wednesday, February 6, 2013 at 12:57pm by matt

chm
A cylinder with a movable piston contains 2.00 of helium,He, at room temperature. More helium was added to the cylinder and the volume was adjusted so that the gas pressure remained the same. How many grams of helium were added to the cylinder if the volume was changed from 2....
Friday, October 10, 2008 at 6:40pm by sarah

Chemistry
A mixture containing 235 mg of Helium and 325 mg of neon has a total pressure of 453 torr. What is the partial pressure of Helium
Thursday, October 20, 2011 at 1:55pm by Monique

Physics
A clown at a birthday party has brought along a helium cylinder, with which he intends to fill balloons. When full, each balloon contains 0.036 m3 of helium at an absolute pressure of 1.2 x 10^5 Pa. The cylinder contains helium at an absolute pressure of 1.6 x 10^7 Pa and has ...
Sunday, April 15, 2007 at 1:18am by Mary

Chemestry
A cylinder with a movable piston contains 2.00g of helium, , at room temperature. More helium was added to the cylinder and the volume was adjusted so that the gas pressure remained the same. How many grams of helium were added to the cylinder if the volume was changed from 2....
Saturday, October 3, 2009 at 7:28pm by Monica

Physics plzzzzzzzzz help
Ideal Gas Law: PV = N k T ---> N = PV/(k T) N = 1.387*10^(29) mass of one helium atom is approximately 4*u = 6.642*10^27 kg 4u*N = 921 kg A Goodyear blimp typically contains 4770 m3 of helium (He) at an absolute pressure of 1.10 x 105 Pa. The temperature of the helium is ...
Friday, December 1, 2006 at 1:35am by Count Iblis

General Chemistry
A cylinder with a movable piston contains 2.00g of helium,He, at room temperature. More helium was added to the cylinder and the volume was adjusted so that the gas pressure remained the same. How many grams of helium were added to the cylinder if the volume was chanded from 2...
Wednesday, June 20, 2012 at 1:02pm by Kim

Chemistry
Please tell me which Gas Law equation to use to figure out this problem... A helium balloon at 25C, 1 atm, has a volume of 2.88 L. Additional helium is pumped into the balloon. It now contains 1.20 g of He and its new volume is 7.20 L. How many moles of helium gas did the ...
Saturday, March 23, 2013 at 2:23am by Pam

English
Which of the following sentences uses CORRECT punctuation? A.) Sharks are considered dangerous predators, however, a deep-sea diver says sharks can be playful creatures, too. B.) Sharks are considered dangerous predators; however, a deep-sea diver says sharks can be playful ...
Tuesday, April 8, 2014 at 8:16am by Cassie

Science
A small bowl contains a mixture of toothpicks and glass marbles.The easiest way to separate the mixture without touching it would be to A.add glue to the mixture B.place a magnet in the bowl C.pour the mixture into a paper cone D.add water to the bowl B?
Saturday, March 3, 2012 at 11:26am by running.from.myself

a&p
In modern blimps, the gas of choice is used to inflate them is helium is safer. Compare and contrast the atomic structure of hydrogen and helium. What characteristics of the atomic structure of helium make it so much less reactive than hydrogen?
Saturday, February 2, 2013 at 7:33am by tameka

CHEM
A cylinder with a movable piston contains 2.00 of helium, , at room temperature. More helium was added to the cylinder and the volume was adjusted so that the gas pressure remained the same. How many grams of helium were added to the cylinder if the volume was changed from 2....
Friday, October 24, 2008 at 6:42pm by Kara

Chemestry
A cylinder with a movable piston contains 2.00 of helium, , at room temperature. More helium was added to the cylinder and the volume was adjusted so that the gas pressure remained the same. How many grams of helium were added to the cylinder if the volume was changed from 2....
Saturday, October 3, 2009 at 7:28pm by Monica

English
Scientists report (1) THAT CREATURES LIVING IN THE DEEP SEA ARE IN DANGER OF STARVING TO DEATH. Millions of undiscovered species live, in the deep sea. Creatures in the seabed are suffering from growing food shortages. Which may be a result of rising sea temperatures. ...
Friday, March 1, 2013 at 2:41pm by Danii

chemistry
A 265- mL flask contains pure helium at a pressure of 747 torr. A second flask with a volume of 485 mL contains pure argon at a pressure of 721 torr .If the two flasks are connected through a stopcock and the stopcock is opened, what is the partial pressure of helium?
Thursday, September 30, 2010 at 10:25am by kat

chemistry
A. ) A goodyear blimp typically contains 5400 m cubed of helium at an absolute pressure of 1.1*10^5 Pa. The temperature of the helium is 280 K. What is the mass (in kg) of the helium of the blimp? B. ) Estimate the spacing between the centers of neighboring atoms in a piece of...
Wednesday, November 17, 2010 at 12:51am by joe

Chemistry
A. ) A goodyear blimp typically contains 5400 m cubed of helium at an absolute pressure of 1.1*10^5 Pa. The temperature of the helium is 280 K. What is the mass (in kg) of the helium of the blimp? B. ) Estimate the spacing between the centers of neighboring atoms in a piece of...
Wednesday, November 17, 2010 at 6:57am by joe

Chemistry
A 6.00 ft cylinder has a radius of 26 in. It contains 189 lb of helium at 25 celsius. Express the volume of the cylinder (V=rh) in liters, the amount of helium in moles and the temperature in Kelvin.
Thursday, September 27, 2012 at 3:48pm by Wendy

English
What can we do to make turtles live in the sea again(Because of water pollution, turtles want to leave.)? 1. We can clean up the sea. 2. We can pick up the garbage in the sea. 3. We must not throw garbage into the sea anymore. 4. Factories must not throw waste oil into the sea...
Friday, July 10, 2009 at 11:33pm by John

Algebra
Suppose a 2% acid solution is mixed with a 3% acid solution. Find the percent of acid in each mixture. -a mixture that contains an equal amount of 2% acid solution and 3% acid solution -a mixture that contains 3 times more 2% acid solution than 3% acid solution
Thursday, December 29, 2011 at 9:51pm by Anonymous

Algebra
Suppose a 2% acid solution is mixed with a 3% acid solution. Find the percent of acid in each mixture. -a mixture that contains an equal amount of 2% acid solution and 3% acid solution -a mixture that contains 3 times more 2% acid solution than 3% acid solution
Friday, December 30, 2011 at 2:06pm by Anonymous

science
a balloon contains 30.0 L of helium gas at 103 kPa. What is the volume of the helium when the balloon rises to an altitude where the pressure is only 25.0 kPa?
Thursday, May 20, 2010 at 5:54am by Brad

english
We have to rewrite this correcting fragments and run on sentences can someone check my work below the original. Scientists report (1) that creatures living in the deep sea are in danger of starving to death. Millions of undiscovered species live, in the deep sea. Creatures in ...
Monday, February 18, 2013 at 11:19am by matt

Chem
A balloon contains 30.0 L of helium gas at 103 kPa. What is the volume of the helium when the balloon rises to an altitude where the pressure is only 25.0 kPa? Assume that the temperature remains constant
Wednesday, January 19, 2011 at 2:30pm by Shrell

Chem
A balloon contains 30.0 L of helium gas at 103 kPa. What is the volume of the helium when the balloon rises to an altitude where the pressure is only 25.0 kPa? Assume that the temperature remains constant
Wednesday, January 19, 2011 at 2:30pm by Shrell

Chem
A balloon contains 30.0 L of helium gas at 103 kPa. What is the volume of the helium when the balloon rises to an altitude where the pressure is only 25.0 kPa? Assume that the temperature remains constant
Wednesday, January 19, 2011 at 2:30pm by Shrell

physics
A rigid tank contains 38:0 kg of O2 gas at a pressure of 9:70 atm. If the oxygen is replaced by helium, how many kilogram of helium will be needed to produce a pressure of 8:00 atm?
Monday, May 20, 2013 at 12:43pm by miya

PHYSICS-please help! :)
If deep-sea divers rise to the surface too quickly, nitrogen bubbles in their blood can expand and prove fatal. This phenomenon is known as the bends. If a scuba diver rises quickly from a depth of 25.0 m in Lake Michigan (which is fresh water), what will be the volume at the ...
Sunday, December 9, 2007 at 9:58pm by Maria

Algebra
The radiator in Natalies car contains 6.3L of antifreeze and water.This mixture is 30% antifreeze.How much of this mixture should she drain and replace with pure antifreeze so that there will be a mixture of 505 antifreeze?
Thursday, March 22, 2012 at 9:19am by sherry

chemistry - helium
what colour does helium burn? Helium BURNS a bright orange red color what colour is helium in the spectra? colorless
Wednesday, June 2, 2010 at 9:47am by john

Chemistry
A mixture contains 5.0 g of He, 1.0 g of Ar, and 3.5 g of Ne. Calculate the volume of this mixture at STP. Calculate the partial pressure of each gas in the mixture at STP.
Wednesday, March 28, 2012 at 12:33am by Jenny

chemistry
If helium added to the mixture increases the pressure to 1.90 {\rm atm}, what is the partial pressure ({\rm atm}) of the helium?
Thursday, November 18, 2010 at 10:25pm by Anonymous

college chemisrty
A cylinder with a movable piston contains 2.00 of helium, , at room temperature. More helium was added to the cylinder and the volume was adjusted so that the gas pressure remained the same. How many grams of helium were added to the cylinder if the volume was changed from 2....
Wednesday, July 7, 2010 at 7:20pm by Tiffany

chemistry
"A 280ml flask contains pure helium at a pressure of 754 torr . A second flask with a volume of 475ml contains pure argon at a pressure of 732 torr . If the two flasks are connected through a stopcock and the stopcock is opened, what is the partial pressure of helium? What is ...
Saturday, February 26, 2011 at 1:15am by T

algebra
a mixture of alcohol and water is 35% acid. if the mixture contains a total of 40L, How many liters of pure acid are in the mixture? how many liters of pure water are in the mixture?
Saturday, June 29, 2013 at 10:23pm by gechii

math
a mixture of alcohol and water is 35% acid. if the mixture contains a total of 40L, How many liters of pure acid are in the mixture? how many liters of pure water are in the mixture?
Saturday, June 29, 2013 at 10:36pm by Anonymous

Ap Chemistry
a mixture contains only sodium chloride and potassium chloride. a .1586-g sample of the mixture was dissolved in water. it took 22.90 mL of 0.1000 M AgNO3 to completely precipitate all the chloride present. what is the composition(by Mass percent) of the mixture?
Sunday, February 2, 2014 at 4:59pm by Blanca

Child Psychology
Which of the following statements is the simplest way to describe respiratory distress syndrome to someone who wants to understand it? A. Its a cluster of breathing problems that often affects premature infants. B. Its a breathing disorder mothers sometimes develop during ...
Sunday, July 10, 2011 at 11:43pm by Jasmin

English help..
Can someone check to see if this is written correctly? It was like this - Scientists report that creatures living in the deep sea are in danger of starving to death. Millions of undiscovered species live, in the deep sea. Creatures in the seabed are suffering from growing food...
Tuesday, March 4, 2014 at 1:54pm by Cassie

check geo
russian coasts lie along the pacific and artic oceans, as well as the: A)caspian sea, black sea, and baltic sea. B)atlantic ocean,black sea,and baltic sea. c)capian sea,north sea,and black sea D)North sea,black sea,and baltic sea. .The answer is A. The volge river connects ...
Wednesday, September 2, 2009 at 8:44pm by henry

science
which of the following statements best describes the biosphere? a) it is a mixture of gases that contain dust particles b)it contains earths metal core c) it contains all of earths water d) it it the part of earth that contains living organisms is it d ?
Wednesday, October 30, 2013 at 8:09am by victoria

science
which of the following statements best describes the biosphere? a) it is a mixture of gases that contain dust particles b)it contains earths metal core c) it contains all of earths water d) it it the part of earth that contains living organisms is it d ?
Wednesday, October 30, 2013 at 8:24am by victoria

physics
A portable steel tank with a volume 35 liters (0.035m) holds helium gas used for filling party balloons. The pressure in the tank is 120atm when at room temperature of 22 C. How many moles of helium gas are in the tank? Each balloon has a volume of 2.5liters when filled with...
Wednesday, January 4, 2012 at 12:14am by sand

CHEMISTRY
A mixture contains 5.00 g each of O2, N2, CO2, and Ne gas. Calculate the volume of this mixture at STP. Calculate the partial pressure of each gas in the mixture at STP.
Tuesday, May 11, 2010 at 6:15pm by ~anonymous

Chemistry
A mixture of C3H8 and C2H2 has a mass of 2.3g . It is burned in excess O2 to form a mixture of water and carbon dioxide that contains 1.6 times as many moles of CO2 as of water. What is the mass of C2H2 in the original mixture?
Saturday, October 19, 2013 at 5:11pm by Matt

Chemistry
A mixture of C3H8 and C2H2 has a mass of 2.0g . It is burned in excess O2 to form a mixture of water and carbon dioxide that contains 1.6 times as many moles of CO2 as of water. Find the mass of C2H2 in the original mixture.
Saturday, October 20, 2012 at 9:27pm by Crystal

Chemistry
A mixture of C3H8 and C2H2 has a mass of 2.6g . It is burned in excess O2 to form a mixture of water and carbon dioxide that contains 1.6 times as many moles of CO2 as of water. Find the mass of C2H2 in the original mixture.
Saturday, September 28, 2013 at 10:45pm by bobert

Chemistry
A mixture of C3H8 and C2H2 has a mass of 2.6g . It is burned in excess O2 to form a mixture of water and carbon dioxide that contains 1.6 times as many moles of CO2 as of water. Find the mass of C2H2 in the original mixture.
Saturday, September 28, 2013 at 10:45pm by bobert

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