osmotic pressure chemistry

63,219 results, page 20

chemistry

at what temperature does 16.3 g of nitrogen gas have a pressure of 1.25 atm in a 25.0 - L tank?

Chemistry

what is the pressure exerted by 32g of 0xygen(O2) in a 22.0 L container at 30.0`C? What Law do I use?

Chemistry

What equation is used when talking about airplane cabin pressure?

College Chemistry

Does Vapor Pressure decrease as intermolecular forces increase???

chemistry

What gas volume does the water have at a temperature of 100 and 1 pressure?

Chemistry

Which solution has a higher vapor pressure, 1 M NaCl or 1 M glucose(C6H12O6)?

chemistry

Vapor pressure ___________ as the temperature of the liquid in equilibrium with it decreases.

chemistry

Vapor pressure ___________ as the temperature of the liquid in equilibrium with it increases.

chemistry

Calculate the pressure in the flask in torr, atmosphere, and pascals if ha = 114 mm.

chemistry

What is the new volume of the balloon, where the pressure is 0.25 {\rm atm} and the temperature is -20^\circ C .

Chemistry

Calculate the density of F2 gas at 27 degree Celsius and 1.00 atm pressure?

Chemistry AP

What is the mass of oxygen in a ml flask if the pressure is 1.00 atm and a temperature of 22.0 Celsius?

chemistry

A gas occupies 8.2 liters at 2.5 atm. What is the pressure if the volume becomes 7.5 L?

chemistry

A gas occupies 8.2 liters at 2.5 atm. What is the pressure if the volume becomes 7.5 L?

chemistry

A gas occupies 8.2 liters at 2.5 atm. What is the pressure if the volume becomes 7.5 L?

chemistry

Assuming a temperature of 37 C and 1 atm pressure, how many mol/min of CO2 is this?

chemistry

What are the effects on chemical equilibrium of following; Temperature , Concentration and Pressure.

chemistry

What volume does 627 cm3 of a gas at 14°C occupy at 40°C, if the pressure does not change?

chemistry

Explain how the addition of a solute affects the vapor pressure of the solvent.

Chemistry

Why is it necessary to correct the pressure of a gas that is collected over water?

Chemistry

If the pressure on a balloon were quadrupled what would happen to the balloons volume?

chemistry

a 0.296g of CO2 has a volume of 565ml and a pressure of 425mmHG, what is the temperature??????

Chemistry

For the reaction 2 N2O <===>O2 + 2 N2 what happens to the equilibrium position if the pressure is increased

chemistry

what volume does 2.5 moles of carbon monoxide occupy at 50.5 kPa pressure and 20.0 C?

Applied Chemistry pls help!

At what depth in water is the pressure equal to 2.0m atmosphere?

Chemistry Lab

Does the pressure exerted by a gas depend on its molar mass?

chemistry

what is the total pressure in a gas mixture of 100 mm hg O2, 820 mm hg N2, and 1.5 mm hg CO2?

chemistry

what is the total pressure in a gas mixture of 100 mm hg O2, 820 mm hg N2, and 1.5 mm hg CO2?

Chemistry

the pressure in a 10.0 L cylinder is raised from 483 mm Hg to 762 mm Hg. What is the new volume?

Chemistry

If the pressure is 10.0 atm, what is the temperature? If a 2.53-L container is filled with 169 g argon

chemistry

how does an increase in pressure affect the following reaction? C2H2(g)+H2(g) C2H4(g)

Chemistry

if the pressure read by the barometer is 0.882atm, what is the height of the column of mercury in cm?

chemistry

what will be the pressure of 0.010m of oxygen gas in a 4.5L flask at a temperature of 10,000C?

Chemistry

What is the pressure in a 22.1-L cylinder filled with 16.3g of oxygen gas at a temperature of 329K?

Chemistry

Find density of C02 at room temperature and normal pressure.

CHEMISTRY

The pressure exerted by 6.0g of methane gas in a 0.03m3 vessel at 129degreeC is.

Chemistry

At what pressure would 0.150 mole of nitrogen gas at -23.0^o C occupy 8.90 L ?

Chemistry

What is the yield of the synthesis of ammonia to 400° C and 500 atm of pressure?

Chemistry

calculate the volume occupied by 7g of N2 gas at 27 degree c and 750mm Hg pressure

Physics (please help!!!!)

Blood pressure is usually reported in millimeters of mercury (mmHg) or the height of a column of mercury producing the same pressure value. Typical values for an adult human are 130/80; the first value is the systolic pressure, during the contraction of the ventricles of the ...

Algebra

Can someone help me understand this? The function p(d)=1+d/33 gives the pressure in the atmosphere (atm) at a depth in the sea (d is in feet) Note that P(0)=1 atm, P(33)=2 and so on find the pressure at 150 feet. The pressure at 150 feet is ? atm?

Math-Algebra

The pressure of a gas varies directly as its temperature. IF the pressure of a gas is 200 pounds per square inch (lb/in^2) at a temperature of 65.5 degrees C, what is the pressure of the gas when the temperature is 250 degrees F?

college physics

a glass container was filled with oil with a density of 0.80 g/cm^3 up to 9 cm. in height. 1) what is the pressure at the base of the container? 2) what is the pressure if depth is 3 cm. from the surface of the oil? 3) what is the pressure if depth is 4 cm. above the base?

chem

A sample of O2 gas was collected over water at 23ºC and 711 torr. What is the partial pressure of the O2? (The vapor pressure of water at 23ºC is 21.2 torr.) Partial pressure of O2:_____torr

Physics

If you dive to 50 m below the surface of a lake, a) what is the pressure due to the water alone? b)What is the total or absolute pressure at that depth?

physics

Determine the absolute pressure at the bottom of a lake that is 13.3 m deep. The acceleration of gravity is 9.8 m/s 2 and atmospheric pressure is 1.01 × 10 5 Pa . Answer in units of Pa

physics

A book has the mass of 1.5 kg what is pressure that it puts down on the table if it has the dimension 20cm by 26 cm? What would the pressure be if it were on end with the dimensions of 20 cm by 4 cm?

AP Chem

Calculate the partial pressure of 4.0 g methane when mixed with 16.0 g oxygen. The total pressure of both gases is 600. torr.

science

130cm3 of a gas at 20oc excert a pressure of 750mmhg calculate it's pressure if it's volume is increased to 150cm3 at 35oc

Science

22g N2, 44g CO2 and 18g of CH4 in contenar if the pressure is 750mm calculated of the partial pressure of each gases

chemistry help!!!!!

Consider the following reaction: Find the equilibrium partial pressures of A and B for each of the following different values of Kp. Assume that the initial partial pressure of B in each case is 1.0 atm, and that the initial partial pressure of A is 0.0 atm. Make any ...

Chemistry

Mass of an empty flask and stopper is 55.844g. 5mL of an unknown liquid is added and heated in a water bath at 99.7 degrees C. It then cools down. The stopper is removed and then replaced. The weight of all of this is 56.101g. The volume of the flask is 248.1 mL. Barometric ...

CHEMISTRY

1. If 29.0 L of methane, CH4, undergoes complete combustion at 0.961 atm and 140°C, how many liters of each product would be present at the same temperature and pressure? 2 If air is 20.9% oxygen by volume, a. how many liters of air are needed for complete combustion of 25.0 ...

physics 2

A reservoir dam holds an 8 km2 lake behind it. Just behind the dam, the lake is 14.0m deep. What is the gauge pressure at the base of the dam (in Pascals)? What is the absolute pressure at a point 2.5 m down from the surface? Assume the pressure at the surface is one atmosphere.

AP Chemistry

1,2-Benzanthracene is a yellow-brown nonvolatile solid with molecular weight 228.29g*mol-1. an 18.2632-g sample of 1,2-benzanthracene is dissolved in 250.0 g of benzene, C6H6. Whta is the vapor pressure of this solution at 25C, in millimeters of mergury, if the vapor pressure ...

Chemistry

Please let me know how I am doing with the following three chemistry questions. 1.A sample of a gas in thermometer has a volume of 135mL at 11 degree celcius.Indicat what temperature(in k and degree celcius)would correspond to the foll.volume: (a)volume:113mL temperature ?? ...

Chemistry

Nitrogen and hydrogen, with volumes of 12.0 L each, are injected into a sealed rigid reaction chamber containing a catalyst. The pressure of the chamber is 8.00 atmospheres and at a known temperature. The reaction is allowed to proceed to completion while being maintained at a...

Chemistry

C2H5NO2 + 2H2O → 2CO2 + NH3 + 3H2 You begin with 1.25 × 10-2 moles of glycine and an excess amount of water that will allow the reaction to proceed completely to products. This is all in a vessel with a volume of 850 mls at 27°C. Assume that the vessel begins with air ...

chemistry

1.50 mol sample of helium at a certain pressure and temperature has a volume of 31.4 L. a second sample of helium at the same temperature and pressure has a volume of 42.4 L. Therefore the second sample contains how many moles of helium?

Chemistry

If I was designing an experiment where hydrogen gas was collected over a 0.1 M aqueous HCl solution from the reaction with zinc metal and I assume complete, rapid reaction, what mass of zinc would be used to collect between 50 and 100 mL of the gas? Note: I calculated using ...

chemistry

Which of the following is NOT true of colligative properties? Colligative properties are... A. responsible for lowering the vapor pressure of a solution versus the vapor pressure of the pure solvent. B. independent of the chemical identity of the solute. C. dependent on the ...

CHEMISTRY

The volume of air in a persons lungs is 615 mL at a pressure of 760 mmHG inhalation occures at the pressure in the lungs drops to 752 mmHG, to wha volume did the lungs expand I got 615*760=V2*752=621 i keep getting 621 and the answer is 620 what i'am i doing wrong

chemistry chem check

an ideal mixture contains 0.4 mol of nonvolatile solute and 0.8 mol of volatile solvent. the resulting vapor pressure was 60 mmHg at 300K. What vapor pressure should be reported at 300 K for pure solvent? A) 48 mmHg B) 60 mmHg C) 75 mmHg D) 90 mmHg **Would it be B) 60 mmHg ...

physics thermodynamics

A gas expands from a volume of 2.00m^3 to 6.00m^3 and does 6912 joules of work against a constant outside pressure. Calculate this outside pressure in Pa. The answer is 1730 Pa, but I don't know how to get that. I honestly have no idea where to start or what formulas to use. ...

Chemistry

Which of the following is NOT true of colligative properties? Colligative properties are... A. responsible for lowering the vapor pressure of a solution versus the vapor pressure of the pure solvent. B. dependent on the mass of solute present. C. independent of the chemical ...

Chemistry

A mixture of ethyne ( C2H2 ) and methane ( CH4 ) occupied a certain volume at a total pressure of 16.8 kPa. Upon burning the sample to form CO2 and H2O, the CO2 was collected and its pressure found to be 25.6 kPa in the same volume and at the same temperature as the original ...

chemistry

calculate the internal energy change for each of the following. a. one hundred(100.)joules of work are required to compress a gas. at the same time the gas releases 23 J of heat. b. a piston is compressed from a volume of 8.30 L to 2.80 L against a constant pressure of 1.90 ...

Chemistry

Imagine that you have a 7.00 gas tank and a 3.00 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 145 , to what pressure should you fill the ...

Chemistry

Imagine that you have a 7.00 gas tank and a 3.00 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 145 , to what pressure should you fill the ...

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 I know ...

static

The coefficient of correlation between the age and blood pressure of a sample of 8 persons was found to be +0.8, the average age is 50 years and average blood pressure is 60. Their standard deviations were 5 and 10 respectively. a) Obtain the two regression equations b) find ...

Statistics

The coefficient of correlation between the age and blood pressure of a sample of 8 persons was found to be +0.8, the average age is 50 years and average blood pressure is 60. Their standard deviations were 5 and 10 respectively. a) Obtain the two regression equations b) find ...

AP Chemistry

The equilibrium constant for the reaction PCl3(g) + Cl2(g)<-> PCl5(g) is 35000 at 760◦C. At equilibrium, the partial pressure of PCl5 was 110 bar and that of PCl3 was 9.98 bar. Calculate the equilibrium partial pressure of Cl2. Answer in units of bar

Chemistry (Check)

A 30.0 L sample of nitrogen inside a rigid, metal container at 20.0 degrees C is placed inside an oven whose temperature is 50.0 degrees D. The pressure inside the container at 20.0 degrees C was at 3.00 atm. What is the pressure of the nitrogen after its temperature is ...

Chemistry URGENT/DR BOB

Dalton's Law of Partial Pressure consider the following container of helium at 45C. intially the valve is closed. After the valve is opened what is the pressure of the helium gas. your start points are 2.00 atm and 9.00L. after opening the valve you have 3.00 atm and 3.00L. ...

chemistry

Which of the following is NOT true of colligative properties? Colligative properties are... A. dependent on the mass of solute present. B. responsible for lowering the vapor pressure of a solution versus the vapor pressure of the pure solvent. C. independent of the chemical ...

Chemistry

Predict the effect of each of the following on the indicated equilibrium system in terms of which reaction will be favored (forward, reverse, or neither) H2(g)+Cl2(g)<=>2HCl(g) +184 kJ A)addition of Cl2 B)removal of HCl C)increased pressure D)decreased temperature E)...

Chemistry

A solution contains naphthalene (C10H8) dissolved in hexane (C6H14) at a concentration of 15.00% naphthalene by mass. Calculate the vapor pressure at 25 ∘C of hexane above the solution. The vapor pressure of pure hexane at 25 ∘C is 151 torr. I keep getting 168 torr...

chemisrty

Q6) A 10 L container contains a mixture of 0.8 g of He and 8 g of Ar at 0 oC. a) (1 pt) Calculate the total pressure of the gas mixture. b) (1 pt) Calculate the partial pressure of each gas in the gas mixture. c) (1 pt) If the initial total pressure of the container was 1.5 ...

Chemistry.

Ca(HCO3)2(s) decomposes at elevated temperatures according to the stoichiometric equation Ca(HCO3)2(s)-> CaCO3(s) + H2O(g) + CO2(g) a.) If pure Ca(HCO3)2(s) is put into a sealed vessel, the air is pumped out, and the vessel and its contents are heated, the total pressure is...

chem

The atmospheric pressure at the summit of Mt. McKinley is 554 mm Hg on a certain day. What is the pressure in atmospheres and in kilopascals? What are the conversions or formulas for this problem??

chemical equilibrium

if the pressure of n2/h2 in aclosed apparatus is 100 atm and 20 percent of the mixture then react ,the pressure at the same temperature would be

Physics

A cook puts 7.20 g of water in a 2.00-L pressure cooker that is then warmed to 530°C. What is the pressure inside the container? (Assume room temperature is 20°C.)

Physics.. Force and pressure

A tank 4m long, 3m wide and 2m is filled to the brim with paraffin. (density 800kg /m3) calculate the pressure on the base.

Physics II

find the velocity of escape of water through a small opening in a broiler where the pressure is 10^6 Pa above atmospheric pressure, assumed h1=h2 and v1=0

math

Find the pressure exerted by the atmosphere on a car window which is 30 cm tall and 40 cm wide if atmospheric pressure is 101,000 Pa. (Remember that a Pa = N/m2)

chemistry

Consider a liquid at 90 bar and 40 °C. What is the change in entropy of the substance as you change the conditions to 1 bar and 150 °C by expanding the liquid while heating? Vapor pressure = 59.2 bar heat of vaporization = 1.82 kJ/mol , both at 150 degree C Heat capacity = ...

Chemistry

A scuba diver 60 ft below the ocean surface inhales 55.0 mL of compressed air from a scuba tank at an initial pressure of 2.60 atm and temperature of 8 ∘C. What is the final pressure of air, in atmo-spheres, in the lungs when the gas expands to 155.0 mL at a body ...

Thermodynamics

Heyy, Okay so I have a question that I'm trying to figure out how to do and I'm really lost, I was hoping somebody might be able to give me a hand. Thanks in advance. The question in general is, I know that the vapour pressure of CCl4 is 98mmHg at 25 degrees C. This also means...

physics

When you suddenly stand up after lying down for a while, your body may not compensate quickly enough for the pressure changes and you might feel dizzy for a moment. (a) If the gauge pressure of the blood at your heart is 15.61 kPa and your body doesn't compensate, what would ...

chemistry

A benzene solution of a nonvolatile solute exhibits a vapor pressure of 90.5 torr at 25 degree C. The vapor pressure of benzene at 25 degree C is 93.9 torr.. what is the mole fraction of the solute in this solution?

Chemistry - Science (Dr. Bob222)

Liquid chloroform (CHCl3) is placed in a closed container and allowed to equilibrate with chloroform vapor. With the temperature held constant, additional chloroform is introduced into the system, and the vapor-liquid equilibrium is reestablished. Following this, the ...

physics

You inflate your car tires to a gauge pressure of 2.43 atmospheres at a temperature of 24 degrees C. After driving a couple of miles the temperature of the tire increases by 46 degrees C. What is the new gauge pressure to the nearest hundredth of an atmosphere? What fraction ...

Chemistry

A sample of chlorine gas at a pressure of 420 mm Hg and in a volume of 3.50L was heated from 18.0 degrees celsius to 45 degrees celsius after being transferred to a container of volume 2.35L. The pressure in this new container should be about? The original T is 18 degrees ...

Chemistry

Predict the order of increasing vapor pressure (at a given temperature) for the following compounds: FCH2CH2F and FCH2CH2OH and HOCH2CH2OH. Explain your decision briefly. ANSWER: I suppose the order is FCH2CH2F and FCH2CH2OH and HOCH2CH2OH (increasing from left to right)...

Science

The air pressure on Pikes Peak in Colorado is approximately 600 millibars. What is the relationship between air pressure at the top of Pikes Peak and at sea level, where air pressure is 1013 millibars?

Physics

The air pressure on Pikes Peak in Colorado is approximately 600 millibars. What is the relationship between air pressure at the top of Pikes Peak and at sea level, where air pressure is 1013 millibars?

Algebra II

The volume of a gas in cubic centimeters, V, varies inversely with the pressure of the gas in liters per square centimeter, p. When the volume of the gas is 16 cm3, its pressure is 20 L/cm2. Find the volume of the gas when the pressure is 2.2 L/cm2.

chemistry

An equilibrium mixture contains N2O4, (P= 0.30 ) and NO2 (P= 1.1 ) at 350 K. The volume of the container is doubled at constant temperature. Calculate the equilibrium pressure of when the system reaches a new equilibrium. Calculate the equilibrium pressure of NO2 when the ...

URGENT chemistry

What pressure is exerted by 0.625 mol of a gas in a 45.4 L container at -24.0ºC

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