osmotic pressure chemistry
64,382 results, page 29

chemistry
1.9 moles of Ar and 2.5 moles of Ne are added to a 10.0 L container at 20.0oC. What will the internal pressure (atm) be? 
Chemistry
A gaseous mixture consists of 6.95 g of N2, 4.75 g of O2, and 2.75 g of He. What volume does this mixture occupy at 23°C and 1.35 atm pressure? 
Chemistry
How many liters of ammonia gas can be formed from 11.3 L of hydrogen gas at 93.0 C and a pressure of 42.4 kPa? 
Chemistry
10.7 L of a gas at 1.75 atm are expanded to 20.0 L at a constant temperature. What is the new gas pressure? * 
Chemistry
The volume of a gas is 76cm3 at 27c and 800mm mercury pressure.what is the volume at s.t.p 
Chemistry
What is the molar mass of a gas (96.0 g) in a 25.0 L container at 27.0 °C? The pressure inside the container is 3.04E5 Pa. 
Chemistry
What is the molar mass of a gas (96.0 g) in a 25.0 L container at 27.0 °C? The pressure inside the container is 3.04E5 Pa. 
Chemistry
A balloon holds 27.8 kg of helium. What is the volume of the balloon if the pressure is 0.97 atm and the temperature is 24 °C 
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? 
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 = _________% 
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 
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 
physics
fluid of constant density = 960 kg/m3 is flowing steadily through the above tube. The radius at the sections are r1 = 0.05 m, r2 = 0.04 m. The gauge pressure at 1 is P1 = 200 000 Pa and the velocity here is v1 = 5 m/s. We want to know the gauge pressure at section 2. 
Chemistry
A pressure of 25.7inHg would be how many kilopascals? Can you do it step by step please. Thank you 
chemistry
A vapor pressure of toluene of 21 mm Hg, at 760 mm Hg, what is the equilibrium concentration for toluene? 
chemistry
11. Calculate the total pressure of a mixture of 0.02 mol He and 0.01 mol H2 in a 5.0 L flask at 10 ºC. 
Chemistry
Calculate the vapor pressure of Hg at 14 oC (in atm). Hg(l) ↔ Hg(g) . . . ΔHo = 61.32 kJ and ΔSo = 98.83 J/K 
Chemistry
Is it true that the higher the boing point, the higher the vapor pressure? 
chemistry
A 6.0L flask contains 0.60 g at a temperature of 25°C. What is the pressure (in atm) inside the flask? 
Chemistry
A gas initially at 20 degrees C it must be changed to (blank) degrees C to triple the pressure. 
chemistry: Gas Laws
how do i setup this problem: What is the pressure of 0.5 mol of a gas with a volume of 6L at 27degreesC? 
chemistry
a 5.0L flask contains 0.60 g 02 at a temperature off 22degrees C.what is the pressure (in atm) inside the flask? 
Chemistry
what is the water vapor pressure of water at 29 degrees celsius? i can't find the information anywhere. 
chemistry
If 4.05 g of methane gas (CH4) is introduced into an evacuated 1.40 L container at 53°C, what is the pressure in the container? 
chemistry
If 4.05 g of methane gas (CH4) is introduced into an evacuated 1.40 L container at 53°C, what is the pressure in the container? 
chemistry
a sample of air has a volume of 140.0 mL at 67 degrees C. At what temperature will its volume be 50.0 mL at constant pressure? 
Chemistry
If the pressure on a 1.04 L sample of gas is doubled at the constant temperature, what will be the new volume of the gas? 
chemistry
a 15gram sample of a gas has a volume of 30 liters at standard pressure. what is the densty of the gas 
chemistry
A 6.58g sample of compound was placed in a 12.6 L container. At 25.0*C, the pressure was found to be 0.75 atm. what is this compound? 
Chem
Chemistry please help. A 20.0L gas cylinder contains 4.80 g H2 at 25 degree celcius. what is the pressure of this gas? 
chemistry
20 g of CO2 is placed in 0.75l Bottle and sealed. what is the pressure in the bottle if the temp is 25C? 
Basic Chemistry
What is the pressure of 64.0 g of oxygen gas in a 1.50L container at 37°C a. 4.12atm b. 51.6atm c. 19.6atm d. 8.2atm 
CHEMISTRY HELP ASAP
A 1.26 g sample of He gas has a pressure of 0.123 atm and a volume of 32.6 L. What is the temperature of the sample, in °C? 
Chemistry
A 3.0 L volume of methane gas is cooled from 59.4°C to 30.0°C. If the pressure remains constant, what is the final volume (L)? 
Chemistry
At what temperature does 150 mL of n2 at 300 K and 1.13 atm occupy a volume of 550 mL at a pressure of 1.89 atm? 
Chemistry
10.7L of a gas at 1.75 atm are expanded to 20.0L at a mass constant temperature.what the new gas pressure? 
Chemistry
10.7L of a gas at 1.75 atm are expanded to 20.0L at a mass constant temperature.what the new gas pressure? 
Chemistry
10.7L of a gas at 1.75 atm are expanded to 20.0L at a mass constant temperature.what the new gas pressure? 
Chemistry
A sample of gas has a volume of 6.20 L at 23 degrees celsius at a pressure of 1.90 atm. What is its volume at STP? 
Chemistry
At a pressure of 103kPa and a temperature of 22 degrees C, 52.9 g of a certain gas has a volume of 31.5 L. what is the identity of this gas? 
chemistry
The concentration of CO2 in an unopened soda can is 0.0506 m at 25 C. What is the partial pressure of CO2 gas in the can? 
chemistry
what is the partial pressure of hydrogen in a flask containing 2g hydrogen and 32g sulphur dioxide 
chemistry
Calculate the pressure exerted by 1.2 mol\rm mol of gas in a volume of 28.2 L\rm L and at a temperature of 334 K\rm K. 
Chemistry
A sample of 20.0 g of chlorine gas at 15 degrees Celsius occupies a volume of 5.0 L. What is the pressure of the gas? 
Chemistry
At normal temperature and pressure, air has a density of 0.001184 g/mL. What is the mass of air in a room that is 3.93 m by 2.28 m by 2.25 m? 
Chemistry (mol)
How many mol of nitrogen monoxide gas (N2) are in a 1.49 L container at standard temperature and pressure? 
Chemistry
Heyy, okay I have this question about chemistry and its driving me nuts. It feels like I am so close but am just missing something. The question is: A vessel of 6.84 L in volume contains 3.61 L of pure water at 25°C. A partial pressure of 3.67 atm of CO2 is quickly injected ... 
AP Physics B (chemistry bit)
I think I'm doing this wrong In an internal combustion engine, air at atmospheric pressure and a temperature of about 20 degrees celcius is compressed in the cylinder by a piston to 1/9 of its original volume (compression ratio = 9.0). Estimate the temperature of the ... 
Chemistry
I'm having trouble understanding rate laws and manipulating them. So, for example, the rate law is rate= k[CO2][O3]. I was taught, maybe if I am just forgetting some pieces(been awhile), if I were to triple/double the partial pressure of CO2/O3, the rate of that element would ... 
Physics
If the pressure outside a window drops by 9.1%, while the pressure inside does not change, what is the force on the window? Assume that the area of the window is 2.3 m2. 
physics
What is the pressure at the bottom of a river (12 m deep) if the air pressure over the river is 98.23 kPa? The density of the river water is 988 kg/m3. 
physics
What is the pressure at the bottom of a river (12 m deep) if the air pressure over the river is 98.23 kPa? The density of the river water is 988 kg/m3. 
Chemistry
Explain what happens when you add sodium chloride to boiling water. I know that when sodium chloride is added to water, the boiling point of water increases. What happens when it is added to already boiling water? I know it increases the temperature, I just don't know why... I... 
Chemistry
How will the volume of a fixed sample of gas change if its pressure is doubled and the Kelvin temperature is doubled? a)the change cannot be determined without more specific information b)it will decrease by a factor of 2 c)it will increase by a factor of 4 d)no change e)it ... 
Chemistry
If a solution is made by adding 0.100 mole of ethyl ether to 0.841 mole of ethyl alcohol. If the vapor pressure of ethyl ether and ethyl alcohol at 20oC are 375 torr and 20.0 torr, respectively, the vapor pressure of the solution at 20oC ..is how many torr? 
AP Chem
The following reaction has Kp = 109 at 25°C. 2 NO(g) + Br2(g) 2 NOBr(g) If the equilibrium partial pressure of Br2 is 0.0159 atm and the equilibrium partial pressure of NOBr is 0.0768 atm, calculate the partial pressure of NO at equilibrium. 
chemistry
i reallly need help with combining the gas laws. here are a few questions i am struggling with if anyone could please help! 1. A steel container holds 750.L of O2 gas at STP. a) how many moles of O2 does the container hold? b)how many grams of O2 does the container hold? c) if... 
Stastics
A researcher wanted to test the effect of a new drug on reducing blood pressure. In the study, there were 35 participants. The researcher measured the participants’ blood pressure before and after the drug was administered. If we want to compare the mean blood pressure from ... 
Physics
A tropical cyclone with wind speed of 170km/h. "Estimate the air pressure at the eye of the cyclone." Assuming that: *it is a laminar flow of air *wind speed outside the cyclone is zero. * the pressure is at normal atm pressure outside the cyclone. *measurement taken at the ... 
Chemistry
A balloon filled with 0.01 mol of hydrogen gas is kept constant at 25 degrees Celsius. If the pressure is increased from 1atm to 1.5atm, what is the resulting volume? _______________________________________ C3H8(g) + 5 O2(g)>3 CO2(g) + 4 H2O(g) A 0.03 mol sample of C3H8 ... 
math
Aerosol cans carry clear warnings against incineration because of the high pressures that can develop upon heating. Suppose a can contains a residual amount of gas at a pressure of 755 mm Hg and a temperature of 25 °C. What would the pressure be if the can were heated to 1155... 
chemistry
a sample of air has a volume of 140.0 mL a 67 degrees C. at what temperature would its volume be 50.0 mL at constant pressure/ 
Chemistry
If the column of water in the water bormeter rose to a height of 35 feet, what would the atmospheric pressure be in mm Hg? 
Chemistry
At a pressure of 103 kPa and a temperature of 22oC, 52.9 g of a certain gas has a volume of 31.5 L. What is the identity of this gas? 
chemistry
CH3OH(g) CO(g) + 2 H2(g) H = +90.7 kJ . Calculate the amount of heat transferred when 35.0 g of CH3OH(g) are decomposed by this reaction at constant pressure 
Chemistry
If oxygen is removed from a sample of air as iron rusts, what happens to the total pressure of the air? 
chemistry
what pressure (in atm) is exerted by a column of mercury 1.4O high? The density of mercury is 13.5951 g/cm3. 
chemistry
1.44 liters of gas at 0.935 atm are compressed to 0.275 l. Find the new pressure in atm. 
chemistry
a 2 l gas bulb contains 4.07*10^23 N2 molecules. If the pressure is 3.05bar, what is the rms speed of the N2 molecules? What is the temperature? 
chemistry
Density of mixture of oxygen and nitrogen is 1.28 gm/lit at stp. Calculate partial pressure of oxygen. 
Chemistry
in a closed system at 40 C, a liquid has a vapor pressure of 50 KPa. the liquid's normal boiling point could be (1)10 C (2)30 C (3)40 C (4)60 C 
chemistry
An unopened soda can has an aqueous CO2 concentration of 0.0506 m (molality) at 25 C. What is the pressure of CO2 gas in the can? 
Chemistry 105
A sample of N20 gas has a density of 2.65 g/L at 298 K. What must be the pressure of the gas (in mmHg )? 
Chemistry
Determine the volume of nitrogen gas at a pressure of 3.00 atm if it had a volume of 400.0 mL at STP. 
CHEMISTRY
Determine the pressure in atm for a 10 g of CO2 sample contained in a sealed 10 L tank at 50degrees C? Did anyone get 26.5 atm? 
chemistry
calculate the volume occupied by 10^22 molecules of a gas 300 k and 760 mm pressure. please help me please................... 
Chemistry
An elemental gas has a mass of 10.3 g. If the volume is 58.4 L and the pressure is 758 torre at a temperature of 2.5 degrees C, what is the gas? 
Chemistry H
If the pressure on the surface of water in the liquid state is 30 kpa, the water will boil at... 0, 30, 70, or 100 degrees c? 
Chemistry
Calculate the pressure of 0.800 moles of helium gas, when the gas is in a balloon with a volume of 2.30 L at a temperature of 32°C. 
chemistry
a gas occupies 37.6 L at 2.00 atm pressure and 27C degrees. how many moles of gas are present in this sample 
Chemistry
If 3.50 mol of A is mixed with 0.750 mol of B and the final pressure of the mixture is 3.25 atm, what are the partial pressures of A and B 
chemistry
A balloon filled with 85 g of nitrogen gas that produced a pressure of 3.25 atm at 58C. What is the volume of the balloon/ 
Chemistry
At a given temperature and pressure how does the magnitude of the heat of vaporization of a substance compare with that of its heat of condensation? 
chemistry
what happens to water at 100 degrees celsius as pressure is increased fro 0.8 atm to 1.2 atm? 
Chemistry
At constant pressure , a certain gas occupies 80cm3 at 0 degrees, what wil be its volumd at 10 degrees 
Chemistry
In a reversible reaction PCl5 ↔ PCl3 + Cl2, the value of K is 2.5. What will the partial pressure of Cl2 be? 
Chemistry
If a 30.pL tank of laughing gas contains 2.74 moles of N2O at 25 degrees C, what is the pressure (atm) in the tank? 
Chemistry
A gas diffuses 3.98 times slower than H2 at the same temperature and pressure. What is the molar mass of the gas? 
chem
A liquid that has an equilibrium vapor pressure of 129 torr at 25°C is placed into a 1L vessel like that shown below. A few mL of the liquid is introduced into the vessel at 25°C while it has a pressure of 1.00 atm of air in it, without allowing any of the air to escape. ... 
chemistry
A sample of N2 with a pressure of 790mmHg at 80∘C is heated to 35∘C. 
Chemistry
Why is the pressure of a gas does not depend on the molar mass of the gas? 
Physics
Some hydrogen gas is enclosed within a chamber being held at 200C with a volume of 0.025m^3. The chamber is fitted with a movable piston. Initially, the pressure in the gas is 1.50*10^6 Pa (14.8 atm). The piston is slowly extracted until the pressure in the gas falls to 0.95... 
Science
PRessure is measured in Pascals (Pa). What combination of units is the same as a Pascal? and When you exert a force on a fluid in a closed container, does the pressure increase, decrease or remain constant? I think it will increase, but I'm not totally sure. 
Physics
Pressure = weight density × depth Calculate the water pressure at the bottom of the 50mhigh water tower shown in the photo. Express your answer to two significant figures and include the appropriate units 
chem
A 5.2 litre baloon at 900 torr of pressure. If the temp is kept constant and the pressure is reduced to 200 torr what is the voume in the balloon? Is this a trick question? My instinct is to say the volume is the same, 5.2 litres. 
Fluid
A research submarine is designed to operate 3 km below the ocean surface. If then interior pressure is 1 atm, what is the total pressure on a 15cm diameter window and force on window. The average density of seawater is 1028 kg/m3 
air pressure
two diffrent unitsused to measure air pressure 
Chemistry
The vapor pressure of chloroform is 173.11 mm Hg at 25 degrees celsius. A nonvolatile, nonelectrolyte that dissolves in chloroform is aspirin. Calculate the vapor pressure of the solution at 25 degrees celsius when 6.243g of aspirin (180.1g/mol) are dissolved in 244.5g of ... 
Chemistry
What is the molecular weight of a gas if a 15.0g sample has a pressure of 836 mm Hg at 25.0 degrees C in a 2.00 L flask? a)167 b)1.35 c)176 d)11.1 e)none of the above Please explain... I need to understand how to do this. Thanks. 
Chemistry
What is the percent aluminum in a sample weighing 1.85 grams. If 35 mL of wet hydrogen gas was produced @ 24 degrees Celsius under a total pressure of 752 torr?