osmotic pressure chemistry

63,268 results, page 22

Chemistry

How will the boiling point of a substance be affected by increasing the atmospheric pressure? How will the boiling point of a substance be affected by decreasing the atmospheric pressure?

partial pressure

1) the value of Kb after the decomposition of sulfur trioxide (S03). 2SO3 (g)--2SO2 (g) +O2 (g) is 1.79 x10^-5 at 350 degree celcius. if SO3 initially at 0.200 atm pressure comes to equilibrium in an otherwise empty tank at 350 degree celcius, determine the partial pressure of...

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 ...

AP Chemistry

What is the value of w (work) when 2.6 moles of H2 expands from 25 liters to 50 liters against a constant external pressure of 1 atm, then expands further from 50 to 100 liters against a constant external pressure of 0.1 atm? Answer in calories. Answer in units of cal.

chemistry

Given--The solubility of NH3 in H2O is 518 g/L at a partial pressure of 760.0 torr. Question #1)-- Calculate the value of the Henry's Law constant for NH3. Question #2)-- Calculate the solubility of NH3 in H2O at a partial pressure of 225.0 torr.

ap chemistry

What is the value of w (work) when 1.3 moles of H2 expands from 25 liters to 50 liters against a constant external pressure of 1 atm, then expands further from 50 to 100 liters against a constant external pressure of 0.1 atm? Answer in calories. Answer in units of cal

CHemistry Help pleaseee

Imagine that you have a 6.00 L gas tank and a 3.00 L gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch. If you fill the larger tank with oxygen to a pressure of 115 atm, to what pressure should you fill ...

chemistry

Imagine that you have a 5.00L gas tank and a 3.50L gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch. If you fill the larger tank with oxygen to a pressure of 145atm , to what pressure should you fill the...

Chemistry

Imagine that you have a 7.00L gas tank and a 3.50L gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch. If you fill the larger tank with oxygen to a pressure of 135atm , to what pressure should you fill the...

Chemistry

The rate law for the reaction NO + O3 > NO2 is rate= k[NO][O3]. What will the effect on the reaction rate if the partial pressure of NO is doubled? What will the effect if the partial pressure of O2 is tripled? Just for clarification: NO will be doubled and O3 would be ...

Physics please check

A cylinder is fitted with a piston, beneath which is a spring, as in the drawing. The cylinder is open at the top. Friction is absent. The spring constant of the spring is 4000 N/m. The piston has a negligible mass and a radius of 0.022 m. (a) When air beneath the piston is ...

Physics

According to Boyle's law, the volume V of a gas at a constant temperature varies inversely with the pressure P. When the volume of a certain gas is 125 cubic meters, the pressure is 20 psi (pounds per square inch). If the volume of gas is increased to 400 cubic meters, the ...

physics

An unknown liquid fills a square container of sides 10 m. What is the density of a material if the pressure 5 m below the surface is 1.6 atm? Assume g=10 m/s^2 and the pressure at the surface of the liquid is 1 atm. Also assume that 1 atm = 10^5 Pa. (Hint: make sure to use the...

chem

A 250 mL sample of oxygen is collected over water at 25 degrees Celcius and 760.0 torr pressure. What is the pressure of the dry gas alone?

Physics

Assuming atmospheric pressure to be 1.01 x 10^5 Pa and the density of sea water to be 1025 kg/m^3, what is the absolute pressure at a depth of 15.0m below the surface of the ocean? Could you show me how to do this problem? Thank you.

Heat transfer

For a sample of air having 22 degC DBT, relative humidity 30 % at barometric pressure of 760 mm of mercury, calculate the vapour pressure

PHYSICS

The truck in that example is traveling at 19 m/s. The density of air is 1.29 kg/m3. By how much does the pressure inside the cargo area beneath the tarpaulin exceed the outside pressure?

Chem

This is also from the lab concerning activity serious of metals and calculation of electrode portentions... Question: What are the standard conditions for measuring potentials? Does that mean... Standard condition for temp: 298K Concentration: 1 molar concentration Pressure: 1...

Physics

You fill your tires with air on a cold morning (-5degreesC) to 220-kPa gauge pressure, then drive into a 32degreesC desert. (a) Assuming the volume of air in the tires remains constant, what's the new gauge pressure? (b) what would be the gauge pressure if the volume of air ...

Chemistry

A steel cylinder contains 98.0 moles of oxygen gas at temperature of 38 degree Celsius and a pressure of 740 torr. After some of the oxygen gas has been used, the pressure is reduced to 332 torr at a temperature of 24 degree Celsius. What mass of oxygen gas is removed from the...

Chemistry

Why do gases behave in a less ideal manner when in LOW TEMP. AND HIGH PRESSURE?

chemistry

What was Le Chatelier’s principle, in The effect on the equilibrium yield of nitric oxide of increasing the pressure?

Chemistry

What is the total vapor pressure of NaCl solution at 25C with mole fraction of 0.01? (X_NaCl = 0.01) Thanks!!

Chemistry

Which of the following indicates the greatest pressure? A) 1 atm B) 777 torr C) 5.5 mm Hg D) 1000 Pa E) 12 psi

Chemistry II

what is the molar mass of a gaseous organic compound with a density of 3.38 g/L at 40oC and a pressure of 1.97 atm?

Chemistry

How many grams of CaH2 are needed to generate 54.5L of gas if the pressure of is 815 torr at 20C?

chemistry

If 2500 ml container is filled with 175 grams of argon at -48 degrees celsius, what is the pressure?

chemistry

120 ml of oxygen is collected at 27degrees C and 740 torr pressure.What is the volume at STP?

CHEMiSTRY

what is the relationship between the pressure of a gas and the absolute temperature when the volume is kept constant ?

Chemistry

How many moles of air are there in flask with a volume of 125mL if the pressure is 745 mm Hg and the temperature is 22 celcius ?

chemistry help me please

What values does STP have for pressure in the units of kPa and atm and mmHg?

chemistry

How to Convert 1 ton Of Steam (Pressure 24Kg/cm2) and ( Temperature 320 C) to K Mol?

Chemistry

a 700 mL flask contans 0.500 moles of O2 at 25. degrees celcius what is the pressure in atmosphers.

chemistry

Calculate the expansion work done when 50 g of water is electrolysed under constant pressure at 25C

Physical chemistry

Calculate the pressure exerted by 1.0 mol C2H6 behaving as a perfect gas

chemistry

wich of the following has the highest vapor pressure A.benzene Btoluene C.xylene D.acetone

Organic Chemistry

What would happen to the caffeine if the sublimation step were performed at atmospheric pressure?

Chemistry

What is the molecular weight of a gas if a 21.0g sample has a pressure of 836mm Hg at 25.0 degrees C in a 2.00L flash?

chemistry

What is the pressure of sulfur hexafluoride gas in a 10.0 liter tank which holds 235 g of the has at 17C?

chemistry

How many moles of argon gas are present in 70l of volume with a pressure of 280atm at 21c?

Chemistry

F2 (g) <--> 2 F (g) A 1.00 mol sample of F2 is placed in a 100. L container at 1000K. What is the pressure of the F2 before any decomposes?

Chemistry

F2 (g) <--> 2 F (g) A 1.00 mol sample of F2 is placed in a 100. L container at 1000K. What is the pressure of the F2 before any decomposes?

Chemistry

F2 (g) <--> 2 F (g) A 1.00 mol sample of F2 is placed in a 100. L container at 1000K. What is the pressure of the F2 before any decomposes?

chemistry

How many moles of argon gas are present in 70L of volume with a pressure of 180atm at 21c?

chemistry

How many moles of argon gas are present in 70L of volume with a pressure of 180atm at 21C?

chemistry

How many moles of argon gas are present in 70L of volume with a pressure of 180atm at 21C?

chemistry

Calculate the volume occuiped by 7g of nitrogen gas at 27degree centigrade and 750 mm of Hg pressure?

chemistry

What is the ÄH°vap of a liquid that has a vapor pressure of 641 torr at 81.7°C and a boiling point of 91.1°C at 1 atm?

Chemistry

Calculate the amount of heat transferred when 21.0 of CH3OH(g) is decomposed by this reaction at constant pressure.

chemistry

state and explain how the concentration of nitrogen gas would be affected by an increase in pressure

chemistry

state and explain how the concentration of nitrogen gas would be affected by an increase in pressure

Chemistry

how do i calculate the temperature in Celsius of a 3.50L,0.75 mole sample of ammonia at 1.0 atm of pressure

chemistry

how does the addition of a nonvolatile solute affect the vapor pressure of the solvent into which it is dissolved?

Chemistry

Estimate the pressure when the barometric height is 650mm Hg. Pls explain how 2estimate if its not basic

chemistry

calculate the pressure when 57 g of flourine at 55 degrees celsius is confined to a 152 liter container.

general chemistry

The gas with a pressure of 1100 at 175 is cooled to 0 °C find out what the Pf= in torr

chemistry

calculate number of dichlorine molecules in a 5.00ml container at 40 degrees Celsius and a pressure of 2.14 x 10^4 Pa.

Chemistry

What volume a sample of 67.0 grams of nitrogen gas (N2)will occupy at -25degrees C and 3 atm pressure?

Chemistry

How many liters of Co2(g) can be produced in the reaction of 5.24 L and 2.65 L O2 (g) if all these gases are measure at the temperature and pressure?

Chemistry

Hydrogen is a solid at low temperature and elevated pressure. Do you expect it to be a metal or an insulator?

chemistry

calculate the expansion work done when 50 g of water is electrolyzed under constant pressure at 25 c...why i get 6.8kj

chemistry

convert the value of the vapour pressure (149.4 torr) at 60 degree celsius to atm

Chemistry

A gas at 54◦C occupies 4.54 L. At what tem- perature will the volume be 3.04 L, assuming the same pressure?

Chemistry

a. How many moles of N2 are present in a 1.00 qt flask that has a pressure of 425 torr at a temperature of 35°C? What is the mass in this na2?

chemistry

If a gas contains 25 ml of oxygen at 37oC and a pressure of 700 mm Hg, what is the volume under STP.

chemistry

If 1.50mol of oxygen gas exerts a pressure of 1500mmHg at 20∘C, what is the volume in liters?

chemistry

At 22 degrees Celsius and 729 torr pressure, what will be the volume of 75 mol of NH3 gas?

Chemistry

Would you expect H2O or H2S to be more volatile at the same temperature and pressure? Why?

Chemistry

Find pressure exerted by 2.0g of helium enclosed in a 100.0 ml container at 25 degrees Celsius

Chemistry

Find temperature of 20.0g of nitrogen that occupies volume of 500.0ml at pressure 0.45 bar.

Kainantu sec..science(chemistry)

How many moles of O2 are there in the above sample at the initial temperature and pressure?

chemistry

What is the volume, in L, occupied by 1.20 moles of C2H6 gas at a temperature of 125oC and at a pressure of 1.55 atm?

chemistry

equal moles of ethane and hydrogen are mixed in container at 25 c what will be the pressure exerted by hydreogen?

Chemistry

if the total partial pressure of Ne and He having the same mass in a sealed container is 6atm then what is that of Ne?

chemistry

If there are 2.871mol of gas present at a temperature of 200.0K and a pressure of 1.009atm, what would the volume be?

Chemistry

A sample of oxygen, O2, occupies 32.2 mL at 30 °C and 452 torr. What volume will it occupy at –70 °C and the same pressure?

Calculus

24. A pharmaceutical company has determined that a realistic model for the relationship between blood pressure (systolic) and the amount of a nerve drug designed to reduce the systolic pressure is given by the equation P=Pi + 2x - x^2. P is measured in millimeters of mercury ...

chemistry

You have two sealed jars of water at the same temperature. In the first jar there is a large amount of water. In the second jar there is a small amount of water. Using 3 -4 sentences explain how the vapor pressure of water in the first jar compares with the vapor pressure of ...

Math

the air pressure of hurricane katrina at landfall was greater than 17 millibars plus the air pressure p before landfall. write and solve an inequality to find the air pressure of the storm before landfall i think the answer is l>17 millibars+p

Chemistry

Benzene has a vapor pressure of 183 mm Hg at 40 degrees Celsius. Taking it's heat of vaporization to be 30.8 kJ/mol, calculate it's vapor pressure at 25 degrees Celsius. The answer is 101 mm Hg, but I keep getting 4.613, and I can't figure out where 101 mm Hg comes from. ln ...

chemistry

If the solubility of gas in water is 5.0g/L when the pressure of the gas about the water is 2.0 atm, what is the pressure of the gas above the water when the solubility of the gas is 1.0 g/L?

chemistry

Energy must be transferred into or out of a system in order to cause phase change.In addition changes in the energy can be directly related to pressure volume changes.If equal moles of each gas is compressed which one would have the largest pressure volume change during ...

chemistry

Energy must be transferred into or out of a system in order to cause phase change.In addition changes in the energy can be directly related to pressure volume changes.If equal moles of each gas is compressed which one would have the largest pressure volume change during ...

chemistry

Energy must be transferred into or out of a system in order to cause phase change.In addition changes in the energy can be directly related to pressure volume changes.If equal moles of each gas is compressed which one would have the largest pressure volume change during ...

Chemistry

Nitrogen & hydrogen goes react to form ammonia gas as follows: N2(g)+3H2(g)-->2NH3(g) At a certain temperature & pressure, 1.2L of N2 reacts with 3.6L of H2. If all the N2 and H2 are consumed, what volume of NH3, at the same temperature & pressure will be produced? I tried ...

Chemistry

A sample of gas is in a 50.0mL container at a pressure of 86 kPa and a temperature of 25°C. The entire sample is heated to a temperature of 35°C and transferred to a new container whose volume is 65.0mL. The pressure of the gas in the second container is: 64 kPa 115.6 kPa ...

chem

The following reaction is used in some self-contained breathing devices as a source of O2. 4KO2(s) + 2C02(g)---> 2K2CO3(s) + 3O2(g) Suppose that a sample of CO2(g) is added to an evacuated flask containing KO2(s) and equilibrium is established. The equilibrium partial ...

Chemistry

A gas sample containing only SO3, CH2O and C2H6O2 has the following mass percent composition: 65.1% SO3 and 8.79% CH2O. Calculate the partial pressure (torr) of SO3 if the total pressure of the sample is 4712 torr. Unit conversion K = C + 273 1 atm = 760 torr Molar Mass (g/mol...

pgcc

A system at equilibrium contains I2(g) at a pressure of 0.23 atm and I(g) at a pressure of 0.24 atm. The system is then compressed to half its volume. A).Find the pressure of I2 when the system returns to equilibrium. B).Find the pressure of I when the system returns to ...

college alegebra

Solve the problem. The volume V of a gas varies inversely as the pressure P on it. The volume of a gas is 240 cm3 under a pressure of 23 kg/cm2 What will be its volume under a pressure of 30 kg/cm2?

chemistry

You have two sealed jars of water at the same temperature. In the first jar there is a large amount of water. In the second jar there is a small amount of water. Using 3 -4 sentences explain how the vapor pressure of water in the first jar compares with the vapor pressure of ...

Calculus

Air pressure at sea level is 30 inches of mercury. At an altitude of h feet above the, air pressure, P, in inches of mercury, is given by, P =30e^(-3.23x10-5h) a)Find th equation of the tangent line at h=0. b)A rule of thumb is given by travelers is that air pressure drops ...

Calc

Air pressure at sea level is 30 inches of mercury. At an altitude of h feet above the, air pressure, P, in inches of mercury, is given by, P =30e^(-3.23x10-5h) a)Find th equation of the tangent line at h=0. b)A rule of thumb is given by travelers is that air pressure drops ...

Chemistry

A closed bottle contains a solution of 5.0% by mass acetone [(CH3)2CO] in water. Calculate the vapour pressure (in kPa) of this solution at 25oC. The vapour pressure of pure water at 25oC is 3.17 kPa and that of pure acetone is 30.7 kPa.

Chem

A 150.0 mL cylinder containing CO at a pressure of 9.50 atm is connected by a valve to 9500 mL cylinder containing B5H9 at 2280 torr pressure. Calculate the partial pressure (atm) of B5H9 when the valve is opened.

Chemistry

balloon is filled with 1.35 atm dimethyl ether gas and 5.25 atm of oxygen gas at 27 C degrees. They react: C2H6O (g) + 3O2 (g) --> 2CO2 (g) + 3H2O(g) The system is allowed to cool back down to 27 degrees Celsius following the reaction. assuming external pressure is still ...

Physics

Bioluminescence Some species of dinoflagellate (a type of unicellular plankton) can produce light as the result of biochemical reactions within the cell. This light is an example of bioluminescence. It is found that bioluminescence in dinoflagellates can be triggered by ...

Chemistry

Death Valley in California is 86 m below sea level. Will the partial pressure of oxygen in Death Valley be the same, lower or higher than the partial pressure of oxygen at sea level? A. higher B. impossible to tell without additional information C. the same

English

Fill a glass with water. Cover the glass with paper. Turn the glass upside down. The water stays in the glass. 1. The outside air pressure is greater than the inside air pressure. ------------------------------------ This is about a simple science experiment. Q1) Why is 'the' ...

Health (Ms. Sue)

1. Compare the two types of pressure to become sexually active. A: The internal pressure one feels to become sexually active comes from within oneself, whereas the sources of external pressures to be sexually active include boyfriends or girlfriends, the media, and your peers...

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