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February 8, 2016

# Search: A gaseous mixture of and contains 36.8 nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 565 ?

Number of results: 58,684

chemistry
The half-life for the first-order decomposition of is 1.3*10^-5. N2O4--> 2NO2 If N2O4 is introduced into an evacuated flask at a pressure of 17.0 mmHg , how many seconds are required for the pressure of NO2 to reach 1.4mmHg ? i know that the half life equation is t1/2= ln2/...
February 1, 2011 by Anonymous

Chemistry
A mixture of chromium and zinc weighing .362 g was reacted with an excess of hydrochloric acid. After all the metals in the mixture reacted 225 mL of dry hydrogen gas was collected at 27 C and 750 torr. Determine the mass percent Zn in the metal sample. [Zinc reacts with ...
March 4, 2007 by Kyle

Chem Help!
I really need help with this question for my chem H.W. 1) On a summer day in Breckenridge, Colorado, the atmospheric pressure is 525 mm Hg. What is this air pressure in atmospheres? (round to the hundredths place) atm
April 10, 2008 by Lisa

chemistry
calculate the pressure in atm of a balloon filled with 7.5g of helium gas if the baloons volume decreases to 7.5L suppose the balloons pressure and volume are originally 799 mmHg and 15L
May 4, 2010 by Quentin

Chemistry
Would you expect the pressure of a 12.5 mL syringe of natural gas to be the same as the pressure of 12.5 mL of air? In other words, is Boyle's Law dependent on the type of gas that is being measured?
February 26, 2013 by Margaret

Physics HELP!!!!!!!!
Suppose 0.021 mole of an ideal monatomic gas has a pressure of 1.00 atm at 273.15 K and is then cooled at constant pressure until its volume is reduced by 41.1 %. What is the amount of work done by the gas?
May 11, 2014 by suzan

last physics problem.
At 25.0 m below the surface of the sea(density=1025 kg/m^3) where the temperature is 5.00 C, a diver exhales an air bubble having a volume of 1.00 cm^3. If the surface temperature of the sea is 20.0 C, what is the volume of the bubble just before it breaks the surface? You ...
April 19, 2007 by jean

0.702g arsenic combines with 0.225g of oxygen to make an oxide of arsenic. When heated this produces a gas with a volume of 52cm3. How do i work out the molecular formula of the oxide when its in a gaseous state? The weight ratio will tell you, after dividing by atomic weights...
February 28, 2007 by laura

Chemistry
A XX-g sample of methane, CH4, is mixed with YY atm of O2 (an excess) in a VV L combustion chamber at 125.0°C. The combustion reaction to CO2 and H2O is initiated and the vessel is cooled back to 125.0°C. What is the final pressure in the combustion chamber assuming the ...
February 25, 2007 by Jack

chemistry
The thermite reaction is a very exothermic reaction; it has been used to produce liquid iron for welding. A mixture of 2 mol of powdered aluminum metal and 1 mol of iron(III) oxide yields liquid iron and solid aluminum oxide. How many grams of the mixture are needed to produce...
December 13, 2009 by B

Chemistry
The hydrogen in an eudiometer has a volume of 80 ml when the pressure is 740 mm. what's its volume at standard pressure?
May 6, 2010 by Kevin

Science
if a pressure of 10 psi on a volume of 5"^3 is reduced to 2 psi, by what factor does the pressure change?
October 26, 2010 by Loren

physics-force and pressure
find pressure when force is 300N and area is 700cm^2

Ellison
Divers know that the pressure exerted by the water increases about 100 kPa with every 10.2 m of depth. This means that at 10.2 m below the surface, the pressure is 201 kPa; at 20.4 m below the surface, the pressure is 301 kPa; and so forth. If the volume of a balloon is 2.2 L ...
February 17, 2013 by AK

Physics
A 1-m-tall barrel is closed on top except for a thin pipe extending 4.8m up from the top. When the barrel is filled with water up to the base of the pipe (1 m deep) the water pressure on the bottom of the barrel is 10 kPa. What is the pressure on the bottom when water is added...
August 9, 2013 by Mily

Chemistry
How would I graph this: (I dont understand the whole with [1/volume] (units=1/mL) on the X-axis ) According to Boyle's Law, pressure is inversely proportional to volume, so prepare a graph of the data, with [1/volume] (units=1/mL) on the X-axis and pressure (atm) on the Y-axis...
April 17, 2014 by Ally

physics
In a specific region of interstellar space the atomic composition of gaseous matter is 89.1% atomic hydrogen and 10.9% helium, the temperature is 27K and the pressure is 2.58x10^-15Pa. What is the density of matter in this region? What is the particle density?
February 13, 2013 by alicia

Algebra
A grocer mixes together some cashews costing 8\$ per kilogram with some nuts costing 10\$ per kilogram. The grocer sold 12 kg of the mixture for 8.50\$ per kilogram. How many kilograms of cashews were in the mixture? I have to find 2 equations then find the answer most likely ...
November 16, 2009 by Rebekah

Algebra
The pressure of a gas varies jointly as the amount of the gas (measured in moles) and the temperature and inversely as the volume of the gas. If the pressure is 975 kPa(kiloPascals) when the number of moles is 4, the temperature is 250 K, and the volume is 320 cc, find the ...
December 5, 2012 by Nicole

chemistry
For a TLC lab,the stationary phase is the mixture of isopropanol and ammonia or the mixture of hexane,ethyl acetate and ethanol, the stationary phase is silica gel. text some dyes and drugs. which one of the two mobile phases is the more polar? Actualy I need two pieces of ...
September 29, 2010 by Leon

chemistry
a 2.52-g sample of a compound containing only carbon, hydrogen, nitrogen, oxygen, and sulfur was burned in excess O to yield 4.23 g of CO2 and 1.01 g of H2O as the only carbon and hydrogen containing products respectively. Another sample of the same compound, of mass 4.14 g, ...
February 15, 2014 by Grace

Separation / Chromatography Lets assume I have three component mixture of liquids. And I wish to determine the quantity of each component present. I have reference samples of two of the components but the other component is not identified. How do I design an experiment in ...
September 24, 2014 by Ilginsh

Separation / Chromatography Lets assume I have three component mixture of liquids. And I wish to determine the quantity of each component present. I have reference samples of two of the components but the other component is not identified. How do I design an experiment in ...
September 24, 2014 by Ilginsh

Chemistry
Suppose a can of aerosol contains a residual amount of gas at pressure of 755mm Hg and a temperature of 25C. What would the presure be if the can were to be heated to 1155c?
March 4, 2013 by Amee

chemistry
A 6.00 L balloon contains helium at SATP at ground level. What is the volume when it floats up to an altitude where the temperature is 10.0 degrees C and atmospheric pressure is 91.5 kPa
January 18, 2015 by Rose

Chemistry
Divers know that the pressure exerted by the water increases about 100 kPa with every 10.2 m of depth. This means that at 10.2 m below the surface, the pressure is 201 kPa; at 20.4 m below the surface, the pressure is 301 kPa; and so forth. If the volume of a balloon is 3.2 L ...
March 2, 2014 by Angela

physics....properties of matter....ASAP.pls
Helium gas occupies a volume of 0.04m^3 at a pressure of 2*10^5 N/m^2 and a temperature of 300K,calculate: 1.) the mass of helium 2.)the root mean square speed of its molecule 3.)the root mean square speed at 432K when the gas is heated at constant pressure to this temperature

Science
A cylinder and an airtight piston are used in the following experiment. The piston is pushed up and down in the cylinder and the resulting pressure of the air inside the cylinder is measured with a pressure gauge. The results of the experiment are recorded in the following ...
July 13, 2014 by dulce

chemistry Damon helps me step by step
1g of mixture na2c03 and k2c03 was mole made upto 250ml is aqueous solution. 25ml of this solution was neutralized. 20ml of hcl of unknown concentration. The neutralized solution required 16.24ml of 0.1N AGNo3 for precipitation, Calculate a) the % k2c03 is mixture b) conc of ...
January 12, 2014 by Ken Hung

chemistry Who clearlyexplain step by step
1g of mixture na2c03 and k2c03 was made upto 250ml is aqueous solution. 25ml of this solution was neutralized 20ml of hcl of unknown concentration. The neutralized solution requires 16.24ml of 0.1N agn03 for precipitation Calculate A) the k2c03 is mixture b) conc of hcl in g/L...
January 18, 2014 by Ferda

General Chem
Nitrogen oxide reacts with oxygen gas to form nitrogen dioxide (NO2). In one experiment 0.866 mole of NO is mixed with 0.503 mole of O2. Calculate the number of moles of NO2 produced
October 12, 2012 by Alexis

fundamentals math
a box contains the following mixture of colored marbles 2 black, 3 red, 5 yellow, and 2 green. If two marbles are drawn, the second being drawn n after the first is replaced, then what is the probability that both are black?
August 26, 2015 by jackie

science; AP Chem
Divers know that the pressure exerted by the water increases about 100 kPa with every 10.2 m of depth. This means that at 10.2 m below the surface, the pressure is 201 kPa; at 20.4 m below the surface, the pressure is 301 kPa; and so forth. If the volume of a balloon is 3.9 L ...
September 14, 2012 by Anonymous

i have a lab, where you took a pile of m&ms and weighted them on a digital scale. and then we found the mass of just one. but i forgot what we did to find the mass of 1. we didnt just put one m&m on the scale. anyone know how to find the mass of one? Did you count the number ...
October 8, 2006 by betsy cline

chemistry
A furnace that provides heat by burning methane gas must have the correct mixture of air and fuel to operate efficiently. What is the mole ratio of air to methane gas in the combustion of methane? Hint: Air is 20% oxygen.
May 27, 2011 by john

Chem B
The air in a dry, sealed 2L soda bottle has a pressure of 0.998 atm at sea level at a temperature of 34C. what will be it's pressure, if it is brought to higher altitude where the temperature is only 23C?
April 5, 2010 by Courtney

physics
The pressure under the surface of a liquid increases with depth. Determine the pressure in Newtons per square meter on a lake at a depth of 100 meters (over 300 feet).
March 8, 2012 by sierra

Chemistry.
To calculate the air pressure, the volume occupied by the air is assumed constant. Why is this assumption incorrect? Explain how the vapor pressure calculated and the resulting Clausius-Clapeyron plot are affected?
October 16, 2012 by Shardae.

Chemistry.
To calculate the air pressure, the volume occupied by the air is assumed constant. Why is this assumption incorrect? Explain how the vapor pressure calculated and the resulting Clausius-Clapeyron plot are affected?
October 16, 2012 by Shardae.

Chemistry
A pressurized can of whipped cream has an internal pressure of 1.080 atm at 25°C. If it is placed in a freezer at -8°C, what is the new value for its internal pressure (in atmospheres)? I did this but got a negative number that wasnt correct
November 1, 2012 by Brandon

Chemistry
If a sample of gas occupies 2.1 ml at a pressure of 896 torr, what volume (ml) will it occupy at a pressure of 316.8 torr. I really need an answer, but also please show me how to work this problem.
March 25, 2013 by Linzy

health
1.why is it necessary to make a pressure bandage for a bleeding injury a)to cover the wound so id does not get contaminated b)to create a barrier so the blood does not infect the rescuer c)to help stop the bleeding by applying continuous pressure****
April 6, 2015 by #HOMEWORK

chemistry 2
The volume of blood in the body of a certain deep-sea diver is 6.00L. Blood cells make up 55% of the blood volume, and the remaining 45% is the aqueous solution called plasma. What is the maximum volume of nitrogen measured at 1.00 atm and 37 degree Celsius that could dissolve...
October 18, 2011 by vel

chemistry
A sample of oxygen that occupies 1.00x10^6 mL at 575 mm Hg is subjected to a pressure of 1.36 atm. What will the final volume of the sample be if the temperature is held constant?
February 27, 2013 by peyton

Chemistry
The temperature of oxygen is 810 torr at 298 K , what will the pressure be at 330 K? Using Lussac's Law, would the answer be 896.98 torr? Thanks

Chemistry;HELP
Correct the following samples of gases to standard temperature. (Assume pressure is constant)(STP stands for standard temp and pressure which is 273K and 101.3 kPa, you do not have to think about the pressure for these four but on the last three you will have to so T2 is 273K...
August 20, 2013 by Unknown

chem
If an ideal gas is allowed to expand into a vacuum, this means that the external pressure is 0. This doesn't affect the internal pressure though, correct? For example: I have a problem in which one mole of an ideal gas at 300. K and at a volume of 10.0 L expands isothermally ...
March 6, 2007 by Chris

chemistry
When 86.7 g of water at a temperature of 73 °C is mixed with an unknown mass of water at a temperature of 22.3 °C the final temperature of the resulting mixture is 61.7 °C. What was the mass of the second sample of water? (Specific heat of water 4.184 J·g-1·°C-1)
April 9, 2013 by Anonymous

chemistry
When 86.7 g of water at a temperature of 73 °C is mixed with an unknown mass of water at a temperature of 22.3 °C the final temperature of the resulting mixture is 61.7 °C. What was the mass of the second sample of water? (Specific heat of water 4.184 J·g-1·°C-1)
April 9, 2013 by Anonymous

Chemistry
Please show step by step with answer The equilibrium constant, Kc, for the equilibrium N2O4 (g) <---> 2NO2(g) is 4.6 x 10^-3 If the equilibrium mixture contains 4.0×10^-2 M NO2, what is the concentration of N2O4?
May 31, 2010 by Lynn

maths
A liter of orange fruit drink contains 22% orange juice. How many millimeters of orange juice must be added to produce a mixture containing 50% orange juice?
May 16, 2011 by Anonymous

Chemistry!!!!!!
a correction needs to be made to the calculations for real gases as compared to ideal gases. apply these corrections and calculate the real pressure expected for 5 mole of nitrogen in a 1.5L container at a temp. of 20C.
April 12, 2012 by Amanda

ap chemistry
Jeff and Jill go canoeing. While reaching to feed a duck, the boat flips. Jeff and Jill blow up their inflatable life preservers and then put them on. As they wait for the rescue squad, they calculate how much nitrogen is in each life preserver. They estimate that the volume ...
February 9, 2013 by cheri

physics
Question Part Points Submissions Used 1 –/1 0/2 Total –/1 A rigid tank contains 1.40 moles of an ideal gas. Determine the number of moles of gas that must be withdrawn from the tank to lower the pressure of the gas from 21.6 atm to 5.90 atm. Assume the volume of the tank and ...
November 23, 2011 by Sarah

Chemistry
I really don't get this. The calculations shown don't make sense. Demonstrate that work is not a state function by calculating the work involved in expanding a gas from an initial state of 1.00: and 10.0atm of pressure to (a) 10,0 L and 1.0 atm pressure. (b) 5.00L and 2.00 atm...
November 28, 2008 by Xi

chemistry
When 6 liter of nitrogen gas reacts with 18 liters of hydrogen gas at constant temperature and pressure, how many liters of ammonia gas will be produced?
April 19, 2015 by braeden

physics
One end of a copper rod is immersed in boiling water at 100 degrees celsius and the other end in an ice-water mixture at 0 degrees celsius. The sides of the rod are insulated. After steady-state conditions have been achieved in the rod, 0.180 kg of ice melts in a certain time ...
December 7, 2009 by Amanda

physics
a weather balloon carries instruments that measure temperature,pressure and humidity as it rises through the atmosphere.Suppose such a balloon has a volume of 1.2 m^3 at sea level where the pressure is 1 atm and the temperature is 20 degree Celsius.When the balloon is at an ...
November 1, 2011 by jennaq

chemistry
A fixed amount of gas initially at 100 K and pressure P1 is expanded from 1 L to 100 L in a piston. The temperature, T2, of the gas at this point is 50 K. The piston is then locked at constant volume V2=100 L and half the gas is pumped out at a constant temperature of T2 . The...
December 5, 2011 by laura

chemistry
A mixture of 0.6 mole of al and 0.9 mole of cl2 are allowed to react as 2al+3cl2=2al2o3 . Calculate mass of reactant left unreacted. (al=27gmol-1 , cl=35.5gmol-1 )
September 29, 2015 by ashika

Chemistry
When CO2(g) (0.118 mol/L) and H2(g) (3.90 mol) in a 33.0 L reaction vessel at 980K are allowed to come to equilibrium the mixture contains 0.0853 mol/L of H20(g). What concentration (mol/L) of CO2(g) reacted? CO2(g) + H2(g) <--> CO(g) + H2O(g)
April 10, 2008 by Riley

chemistry
A crude oil burned in electrical generating plants contains about 1.2% sulfur by mass. When the oil burns, the sulfur forms sulfur dioxide gas: S(s) + O2(g) -------> SO2(g) How many liters of SO2 (d = 2.60 g/L) are produced when 1.00 x 10^4 kg of oil burns at the same ...
October 10, 2008 by starlight

chemistry
A crude oil burned in electrical generating plant contains about 1.2% sulfur by mass. When the oil burns, the sulfur forms sulfur dioxide gas: S(s) + O2 (g) = SO2 (g) How many liters of SO2 (d= 2.60 g/L) are produced when 1.00 * 10¬4 kg of oil burns at the same temperature and...
October 19, 2009 by bobthebuilder

chemistry
A crude oil burned in electrical generating plant contains about 1.2% sulfur by mass. When the oil burns, the sulfur forms sulfur dioxide gas: S(s) + O2 (g) = SO2 (g) How many liters of SO2 (d= 2.60 g/L) are produced when 1.00 * 10¬4 kg of oil burns at the same temperature and...
October 19, 2009 by bobthebuilder

chemistry
A crude oil burned in electrical generating plant contains about 1.2% sulfur by mass. When the oil burns, the sulfur forms sulfur dioxide gas: S(s) + O2 (g) = SO2 (g) How many liters of SO2 (d= 2.60 g/L) are produced when 1.00 * 10¬4 kg of oil burns at the same temperature and...
October 19, 2009 by bobthebuilder

science
Write balanced chemical equations (using symbols) for the following reactions 1.hydrochloric acid reacts with magnesium to form magnesium chloride and hydrogen 2.Nitrogen monoxide burns in oxygen to form nitrogen dioxide
May 21, 2014 by Lesedi

chem word problem
.If a gas is cooled from 323.0 K to 273.15 K and the volume is kept constant, what final pressure would result if the original pressure was 750.0 mm Hg? Round to the nearest tenth. Don't forget the units. what should i plug in?
May 23, 2013 by ray

Chemistry
I just wanted to be sure if my answers make any sense. Thank you; For the reaction of ammonia: N2(g) + 3H2(g) --> 2NH3(g) suppose equilibrium has been established. Explain how and why the position of equilibrium will shift in response to the following changes: (a) ...
July 2, 2012 by Robert

chemistry
Two liquids A and B on mixing form an ideal solution. The vapour pressure of the solution containing 2 moles of A and 4 moles of B is 0.2 atm. If the vapour pressure of pure A at a certain temperature is 0.3 atm then what will be the vapour pressure of pure B at that temperature?

Chem
Which of the following are correct statements? (Could be as many as 4) 1. One mole of gas contains 22.4 representative particles 2. Standard pressure is 100 mm Hg 3. One mole of a gas must have the same volume as one mole of any other gas at STP 4. Gas molecules are spaced far...
April 10, 2013 by will.i.am

Chemistry/Equilibrium calculations
At 1200 K, the approximate temperature of vehicle exhaust gases, Kp for the reaction 2CO2(g)-> <- 2CO(g)+ O2(g) is about 1 E-13. Assuming that the exhaust gas (total pressure 1 bar) contains 0.2% CO, 12% CO2 and 3% O2 by volume, is the system at equilibrium with respect ...
August 16, 2008 by Mary

Chemistry
For the reaction given, the value of the equilibrium of the constant at 400 K is 7.0. Br2(g)+ Cl2(g)=2BrCl(g) Does the: Reaction proceed to the left? Reaction proceed to the right? Partial pressure represent a system in an equation?
February 21, 2014 by Andy

Chemistry Lab+Help
Okay, basically what we did in the lab was fill up an empty soda can with about 5mL of water, and we had to heat it up to a boiling point. After that we turned the soda can upside down into a beaker with cold water. After a minute or so, the can just snapped in half. I have to...
March 22, 2009 by Chopsticks

Physics
(a) An ideal gas occupies a volume of 1.6-cm3 at 20°C and atmospheric pressure. Determine the number of molecules of gas in the container. (b) If the pressure of the 1.6-cm3 volume is reduced to 1.6 10-11 Pa (an extremely good vacuum) while the temperature remains constant, ...
April 25, 2010 by Kelsey

Math Inequalities
One canned juice drink is 25% orange juice another is 5% orange juice. How many liters of each should be mixed together in order to get 20L that is 24% orange juice? How many liters of the 25% orange juice should be in mixture? How many liters of the 5% orange juice should be ...
November 5, 2009 by Anna

Algebra
1.The ratio of nickels to dimes to quarters in 3 : 8 : 1. If all the coins were dimes, the amount of money would be the same. Show that there are infinitely many solutions to this problem. 2.A grocer wants to make a mixture of three dried fruits. He decides that the ratio of ...
November 7, 2013 by Summer

Science-Chemistry
A 5.00 g sample of Al pellets (specific heat = .89 J/g degrees c) and a 10.00 g sample of Fe pellets (specific heat = .45 J/g degrees c) are heated to 100.0 degrees C. The mixture of hot Fe and Al is then dropped into 97.3 g of water at 22.0 degrees C. Calculate the final temp...
October 1, 2007 by Niclas

Fluid Mechanics
A large tank supplies air to a converging nozzle that discharges to atmospheric pressure. Assume the flow is reversible and adiabatic. For what range of tank pressures will the flow at the nozzle exit be sonic? If the tank pressure is 600 kPa (abs) and the temperature is 600 K...
March 22, 2009 by Katie

chemistry
At 850 K, the value of the equilibrium constant Kp for the ammonia synthesis reaction N2(g) + H2(g) <--> N2H2(g) is 0.1690. If a vessel contains an initial reaction mixture in which [N2]=0.0150 M, [H2]=0.0200 M, and [N2H2]=0.000250 M, what will the [N2H2] be when ...
November 5, 2012 by Victoria

chem help!
The equilibrium constant, Kc, for the equilibrium N2O4(g)←→2NO2(g) is 4.6×10−3 . If the equilibrium mixture contains 5.0×10−2M NO2, what is the concentration of N2O4?
July 28, 2013 by Anonymous

ThermoPhysics
During the compression stroke of a certain gasoline engine, the pressure increases from 1.00 atm to 20.5 atm. The process is adiabatic and the air–fuel mixture behaves as a diatomic ideal gas. (a) By what factor does the volume change? Vfinal = Vinitial (b) By what factor does...

chemistry
When determining partial negatives and partial positives, does the partial postive go with the more electronegative atom? Ex: C=O, the polarity arrow goes toward the O because its more electronegative than the C but which atom gets the partial negative and which has the ...
October 3, 2007 by AMY

Chemistry
A 2.612 g sample of a copper oxide, when heated in a stream of H2 gas, yields .592 g H20. What is the formula of the copper oxide? Again, I need help with this problem. Answer = CuO Ok nvm.. i got it. Set up the reaction as best we can surmise at the moment. CxOy + H2 ---> ...
August 25, 2005 by Laura

CHEM
A 5.00 g sample of Al pellets (specific heat = .89 J/g degrees c) and a 10.00 g sample of Fe pellets (specific heat = .45 J/g degrees c) are heated to 100.0 degrees C. The mixture of hot Fe and Al is then dropped into 97.3 g of water at 22.0 degrees C. Calculate the final temp...
October 1, 2007 by Charlie

Chemistry
A 5.00-g sample of aluminum pellets (specific heat capacity = 0.89 J/°C · g) and a 10.00-g sample of iron pellets (specific heat capacity = 0.45 J/°C · g) are heated to 100.0°C. The mixture of hot iron and aluminum is then dropped into 91.9 g of water at 23.7°C. Calculate the ...
November 13, 2011 by Bill

Chemistry
If a sample of silver carbonate contains 1.75 grams of silver [Ag] atoms, calculate the mass (in grams) it contains of oxygen atoms [O].
September 24, 2014 by Jenn

chem
when ammonium nitrate decomposes, nitrogen, hydrogen, and oxygen gas are generated per the reaction 2NH4NO3(s)=2N2(g)+4H2+3O2(g). when 23 g NH4NO3 decomposes what total volume of gas at 1 atm and 298 do you get?
March 31, 2008 by bill

Chemistry
You have 4.271 x 102 mL of oxygen gas (O2) at 7.656 x 102 mm of Hg and 78 oC. What is the mass of the sample in milligrams? When alcohol evaporates according to the equationC2H5OH(l) --> C2H5OH(g), how many liters of gaseous alcohol, measured at STP, are created by the ...
April 17, 2013 by Tif

Chemistry - Correction
I just wanted to be sure if my answers make any sense. Thank you; For the reaction of ammonia: N2(g) + 3H2(g) --> 2NH3(g) suppose equilibrium has been established. Explain how and why the position of equilibrium will shift in response to the following changes: (a) ...
July 3, 2012 by Robert

Gen Chem 1
We want to change the volume of a fixed amount of gas from 745mL to 2.30L while holding the temperature constant. To what value must we change the pressure if the initial pressure is 102 kPa?
October 26, 2010 by Kay

meteorolgy
Compute the relative humidity (RH) to nearest percent for each of the following atmospheric conditions: (Round to one decimal place, do not include units.) b. vapor pressure = 4 mb, saturation vapor pressure = 16 mb, RH = _________%
June 15, 2011 by Anonymous

Math
A hurricane wind blows across a 6.00 m times 15.0 m flat roof at a speed of 190 km/hr. Is the air pressure above the roof higher or lower than the pressure inside the house? Explain. Need help
August 14, 2011 by Catie

chem
.If the pressure of the gas in a 2.31 L balloon is 0.120 atm and the volume increases to 7.14 L, what will be the final pressure of the air within the balloon? Round to the nearest hundredth. Don't forget the units. i really tried but i need help
May 23, 2013 by nene

University
Chemistry The molar heat capacity of butane under constant pressure Cp=19.4 + 0.233 T J.mol' '.K' . Calculate the quantity of heat needed to increase the temperature from 27"C to 127 ° Cu under1 atm pressure.
November 22, 2015 by Zahra

soil mechanics
The following results were obtained from a CU on two samples: Test no. Confining stress (kPa) Deviatoric stress (kPa) Pore pressure (kPa) 1 100 400 -20 2 300 760 60 a) Determine c and ƒÖ for total stress and effective stress condition. b) What is the deviatoric stress at ...
December 4, 2013 by WYNN

chemistry
A 28.4 L sample of methane gas is heated from 35.0 C to 76.0 C. The initial pressure of the gas is 1.00 atm at 35.0 C. Assuming constant volume, what is the final pressure of the gas
November 20, 2011 by sandy

Chemistry
True or False? An increase in pressure for a system composed entirely of gases will cause the reaction to shift to the side that contains the larger number of moles.
June 2, 2010 by Heather

Chemistry
Calculate the concentrations of S2O8 2-, I-, S2O32 2- in moles per litre of reaction mixture given the following: 20mL of 0.1 M (NH4)2S2O8 added to: 20mL of 0.2M KI 10mL of 0.01M Na2S2O3 5mL 0.2% starch Also, calculate -(delta)S2O8 2- that is, how much S2O8 2- is used up (...
January 24, 2011 by Rachel

Chemistry
You have two gas-filled balloons, one containing He and the other H2. The H2 balloon is twice the size of the He balloon (let the He balloon have a volume of 1 -L and the H2 balloon. a volume of 2 L). The pressure of gas in the H2 balloon is 1 atm while that in the He balloon ...
February 19, 2012 by Bria

chemistry
Use Table 9.4 to calculate an approximate enthalpy or heat of reaction for the combustion of one mole of methane gas (CH4) to form gaseous H2O and CO2. What Volume (in L) of methane is needed to produce 3287 kJ of heat for methane gas at 11 oC and 3.40 atm pressure?
November 5, 2014 by john