What volume does 3.01 x 10^21 molecules of N2 occupy at STP?
18,675 results

Chemistry
What volume does 3.01 x 10^21 molecules of N2 occupy at STP? 
Chemistry
what volume does 3.01x 10^21 molecules of N2 occupy at STP 
Chem
What volume do 3.8 x 10^22 molecules of NO2 gas occupy at STP? 
Chemistry
Which of the following gases occupy the smallest volume at STP? a) 1.000 mol carbon dioxide b) 4.032 g H2 c) 35.45 g Cl2 d) 6.022 x 10^23 molecules of O2 
SCIENCE
Which of the following gases occupy the smallest volume at STP? a 4.032 g H2 b 1.000 mol of carbon dioxide c 6.022 × 1023 molecules of O2 d 35.45 g Cl2 
Chemistry
Which of the following is NOT an assumption about an ideal gas? A. There are no intermolecular forces of attraction. B. The molecules do not collide with each other. C. The molecules have no kinetic energy. D. The molecules occupy no volume. 
Chemistry
What volumes will each of the following occupy at STP? a. 1.80 x 10^24 molecules of SO3 b. 7.5 mol C2H6 c. 25.2 grams chlorine 
chemistry
A sample of N2 gas occupies a volume 180 mL at STP. What volume, in L, will it occupy at 640 mm Hg and 295 K? 
Chemistry
A sample of oxygen has a volume of 205cm³ when its temperature is 22.0°C and its pressure is 30.8 kPa. What volume will the gas occupy at STP? 
chemistry
What volume does 16.0g of o2 occupy at stp 
chem
Show work 1. How many moles of oxygen will occupy a volume of 2.50 liters at 121.6 kPa and 331 K? 2. An unknown volume of chlorine gas (Cl2) is resting at 127 °C at a of pressure 152.4 kPa. If the gas weighs 191.4 g, what is the volume? 3. A 2.917 mole sample of an ideal gas ... 
chem homework
a gas occupies a volume of 410mL at 27 degrees Celcius and 740mm Hg pressure. Calculate the volume the has would occupy at STP. 
Chemistry
1. Calculate the number of molecules in a deep breath of air whose volume is 2.15 L at body temperature, 36 degrees Celsius, and a pressure of 740 torr. 2.A fixed quantity of gas at 24 degrees Celsius exhibits a pressure of 740 torr and occupies a volume of 4.42 L. a)Use Boyle... 
Chemistry
What volume would 1.5 x 10^25 molecule CO2 occupy at STP? 
Chemistry
What volume does 0.25 moles of oxygen gas occupy ar STP? 
Chemistry
a gaseous sample occupies 32.4 mL at 23 degrees C and 0.75 atm. What volume will it occupy at STP? 
chemistry
What volume will a mixture of 5.00mol of He and 0.800 mol of CO2 occupy at STP? 
Chemistry
A gas occupies 30 0dm3 at stp what volume would it occupy at 91 and 380mm hg? 
Pre Chem
A gas occupies a volume of exactly 500 mL at STP. What volume would it occupy at exactly 70°C and 400 mm of pressure? 
Chem
a gas has a volume of 410 mL at 27 degrees c and 740 mm Hg. what volume would this gas occupy at STP? 
Chem
a gas has a volume of 410 mL at 27 degrees c and 740 mm Hg. what volume would this gas occupy at STP? 
Chemistry
A sample of H2 gas occupies a volume of 565 mL at STP. What, volume, in mL, will this sample of H2gas occupy at a temperature of 17oC and at a pressure of 0.560 atm 
chemistry
What volume (in liters) does 3 g sample of Argon (Ar) gas occupy at standard conditions (STP)? 
Chemistry
What mass of Helium will occupy 2 times the volume of 10.0 grams of Neon if both gases are measured at STP? 
Chemistry Check?
1. A sample of neon is collected at 1273.51 kPa and 12.0 oC. It has a volume of 2.25 L. What would be the volume of this gas at STP? (2.25 L) x (1273.51 kPa / 101.3 kPa) x (0 + 273.15 K) / (12.0 + 273.15 K) = 27.1 L 2.A sample of argon has a volume of 1205 cm3 when its ... 
chm
calculate the van dar waals coorectionj terms to pressure and volume for Cl2 at STP. The values of the van der waals constant a and b are 6.49L2atm/mol2 and 0.056L/mol, respectively, for Cl2. At STP, which is the major cause of deviation from ideal behavior, the volume of the... 
chemistry
suppose you have two 1L flasks one containing N2 at STP the other containg CH4 at STP how do these systems compare with respect to a)number of molecules B)density c)average kinetic energy of the molecules d)rate of effusion through a pinhole leak? 
chemistry
The volume of 02 collected over water at 25 Celcius and 740 torr was 250 mL. What volume will the dry 0x occupy at STP (Vapor pressure of water at 25 celcuis is 23.8 torr) 
Chemistry
The volume of 02 collected over water at 25 degree C and 740 torr, was 250 mL. What volume will the dry 02 occupy at STP? (Vapor pressure of water at 25 degre C is 23.8 torr). 
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... 
chemistry
A volume of 50.0 ml of gas is collected by displacement of mercury at 17 degrees Celsius and 760 mm pressure. The mercury level inside the eudiometer is 30.0 mm higher than the outside. What volume will the gas occupy at STP? 
Chem
How many molecules are there in an ideal gas with a volume of 1.99 L at STP? 
Chem 22
1. What volume will a mixture of 5.00 mol of H2 and 0.500 mol of CO2 occupy at STP? 
Chemistry
A sample of Chlorine occupies 8.50 L at 80.0 C and 740 mm Hg. What volume will Chlorine occupy at STP? 
Chemistry
Which one of these samples contains the smallest number of molecules? a. 1.0 L of H2 at STP (0°C and 1atm) d. 1.0 L of N2 at 0°C and 800 torr b. 1.0 L of N2 at STP e. 1.0 L of He at STP c. 1.0 L of H2 at 20°C and 760 torr 
Chemistry
What volume will the following quantities of gases occupy at STP? 5.0 g of H(2) subscript=2 228.0 g of N(2) subscript=2 
Chemistry 3A
a sample of gas occupies 500ml at STP. what volume will the gas occupy at 85.0 degrees Celsius 
chemistry
The volume of a mass of gas is 300 ml at 25 Celsius and 685 torr. What will the gas occupy at STP? 
Chem 130
What mass of CO2 could be absorbed by 1.37 g of CaO? What volume would this CO2 occupy at STP? 
chemistry
What is the density of UF6 (subscript) gas? What volume would 2.35 moles of this gas occupy? (Assume STP) 
chem
a gas has a volume of 95 ml at a pressure of 700 torr and temp of 77C what volumn will this gas occupy at stp 
chemistry
The volume of a mass of gas is 300 ml at 25°C and 685 torr. What will the gas occupy at STP? Would the answer be 248 ml? 
Science
Consider a mole of CO2 and a mole of N2O each at STP. Which of the following statements are true? Check all that apply. ~Both gases will have approximately the same density at these conditions. ~When the volume is not held constant, raising the temperature will decrease the ... 
science
how do i ansewr this question? An aerosol spray can with a volume of 400. mL contains 2.25 g of propane gas (C3H8) as a propellant (a) If the can is at 31°C, what is the pressure in the can? (b) What volume would the propane occupy at STP? (c) The can's label says that ... 
Chemistry
A gas occupies a volume of exactly 500mL at STP. What would it occupy at exactly 70 degrees celsius and 400 mm of pressure? 
Chemistry
The volume of a mass of gas is 300 ml at 25°C and 685 torr. What will the gas occupy at STP? Will the temperatures be the same when I do (P1V1/T1) = (P2V2/T2) ? 
Chemistry
What volume in liters would contain 5.30 x 10^24 molecules of hydrogen gas at STP? 
Chemistry
What volume in liters would contain 5.30 x 1024 molecules of hydrogen gas at STP? 
chem
In a laboratory experiment 259 ml of gas was collectedd over water at 24 degree C and 752 torr. Calculate the volume, that the dry gas occupy at STP? 
Kainantu sec..science(chemistry)
A sample of O2 gas occupies 1.93L at a pressure of 10.0atm at 100 degree celsius. What volume will the sample occupy at stp? 
(113) Chemistry  Science
Which of the following effects will make the ratio (PV) / (nRT) less than 1 for a real gas? a) The gas molecules are large enough to occupy a substantial amount of space. b) A large number of molecules have speeds greater than the average speed. c) The gas molecules have a ... 
chemistry
A gas tank holds 15.0 liters of gas at 37C and 342 kPa. What volume would this gas occupy at STP? 
chemistry
A gas tank holds 15.0 liters of gas at 37C and 342 kPa. What volume would this gas occupy at STP? 
Chemistry
If the methane contained in 3.50L of a saturated solution at 25 ∘C was extracted and placed under STP conditions, what volume would it occupy? Solubility of methane is 1.3 millimolar 
Chemistry 3A
in a lab experiment, 133mL of gas was collected over water at 24 degrees Celsius and 742 torr. Calculate the volume that the dry gas would occupy at STP. 
CHEMISTRY
Which of the following gases will occupy the smallest volume at 300 K and 760 torr and why? 80 g diatomic oxygen 80 g methane 80 g hydrogen fluoride All gases will occupy the same volume 
Chemistry
A gas occupies a volume of 140 mL at 35.0 C and 97 kPa. What is the volume of the gas at STP? N = ( P )( V ) / ( R ) ( T ) N = ( 97.00 ) ( 140 /1000 ) / ( 8.314 ) ( 308.15 ) = 0.005300 gmol V sub STP = ( N ) ( R ) ( T sub STP ) / ( P sub STP ) V sub STP = (0.005300 )( 8.314... 
Chem
Calculate the massif 3.76x10^20 molecules of tricarbon disulphide. Determine the volume,at STP, of 10.24mol helium gas. 
volume stoichiometry
Determine the volume of oxygen that is needed at STP to completely react with 5.63 g of potassium. 4K + O2 yields 2H2O I don't buy the equation. If K is reacting with oxygen, then the equation is 4K + O2 ==> 2K2O Actually, I think it forms K2O2. Do you have any information ... 
SCIENCE/CHEM
the volume of a sample of gas is 650.ml at STP. what volumes will the sample occupy at 0.0degrees celsius and 950.torr??? is it 650.ml? 
Chem
I need help I don't get this 1. Since the gas in your graduated cylinder is a mixture of butane and water vapor, you must determine the partial pressure of the butane, Pbutane, alone. To do this, consult a reference and record the partial pressure of the water vapor, Pwater, ... 
Chemistry (Check)
Chlorine gas, Cl2, is widely used to purify municipal water supplies and treat swimming pool waters. If it occupies 23.5 cm^3 at STP, what volume will it occupy at 270. degrees C and a pressure of 1520 Torr? Vf = 1.29 x 10^4 
chemistry
A 200mL sample of Oxygen gas is collected at 26 degrees C and a pressure of 690 torr. What volume will the gas occupy at STP (0 degree C and 760 torr) 
chem
Use the molar volume of a gas at STP to determine the volume (in L) occupied by 10.5g of neon at STP. 
biochemistry
please explain how to get these answers (answers provided): 1. If this cell were a muscle cell (myocyte), how many molecules of actin could it hold? (Assume the cell is spherical and no other cellular components are present; actin molecules are spherical, with a diameter of 3.... 
Chemistry (Check)
Part B TrueFalse Classify each of the statements as always true, sometimes true, or never true. 1.____ST______ one mole of any gas occupies a volume of 22.4 L. 2_____NT______ for a substance of known molar mass, the number of moles of a sample can be calculated from the mass ... 
chemistry
What weight of H2 at STP could be contained in a vessel that holds 4g of oxygen at STP? First, I used the Ideal Gas Law to find the volume of oxygen at STP, but im not sure what to do from there.. 
Chemistry
How many moles of Ne occupy 2.0 L at STP? 
Chemistry
Using molar volume (STP) or the ideal gas law equation, determine the molar mass, g/mole, of each of the following:1.)11.1g of a gas that has a volume of 1.50L at STP. 2.) 0.742g of a gas that has a volume 860mL at 1.28atm and 18∘C. 3.) 2.42g of a gas that has a volume 1... 
College Chemistry
Using the molar volume (STP) or the ideal gas law equation, determine the molar mass,g/mole, of each of the following. A: 11.2g of a gas that has a volume of 1.50Lat STP? B: .0710g of a gas that has a volume 825ml at 1 atm 
Chemistry
It turns out that the Van Dar Waals constant b is equal to four times the total volume actually occupied by the molecules of a mole of gas. Using this figure, calculate the fraction of the volume in a container actually occupied by Ar atoms: a) at STP b) at 100 atm pressure ... 
Chemistry
How do you find the Volume of O2 at STP Volume of 1 mole of O2 at STP 
chemistry
I need help setting up this problem: A 5.0 sample of O2 is in a container at STP. What volume is the container and how many molecules of O2 in the container and how many atoms of oxygen? 
Chemistry
I need help on these last three problems on my Hw. 1. A 10.0 L sample of gas at 3.00 degrees Celsius is cooled at a constant pressure until it reaches 1/2 of its original volume. At what temperature in K will this volume be reached? (Charles law) 2. 994 mLof gas is collected ... 
Chemistry(Please check)
1) Which statement below is incorrect if any? a)when gas is at STP, the pressure of the gas is at 1.00 atm. b)when a gas is at STP, the temperature of the gas is 25 degrees celsius c)at STP the molar volume of a gas is 22.4L d)at STP the molar volume of all gases are the same ... 
chemistry homework help!!
many gases are shipped in high pressure containers. consider a steel tank whose volume is 42.0L and which contains O2 gas at a pressure of 165atm at 23 degrees celsius. 1.) what mass of O2 does the tank contain? 2.) what volume would the gas occupy at STP? 3.) At what ... 
chemistry NEED HELP please
N2(g) + 3H2(g) ==> 2NH3(g) A. If 16.99 g of hydrogen is reacted at STP, volume of ammonia is produced? B. If 35.82 L of nitrogen is reacted at STP, what mass of hydrogen must also be reacted? C. At STP, what volume of hydrogen is needed to produce 70.9 L of ammonia; D. What... 
physics 105
How many cubic feet will 44lb of CO2 occupy at STP 
Chemistry
How many liters would 1.000g of helium gas occupy at STP? 
Chemistry
Olive oil has a higher viscosity than benzene. Which statement best explains the reason for the difference in viscosity between these two liquids? A. Molecules of olive oil take up a smaller volume than molecules of benzene. B. Fewer intermolecular forces exist between ... 
science
Thermal energy is caused by motion of? 1. mixing water molecules contained in a beaker 2. molecules in soild liquid and gas phases 3. mixing molecules together 4. molecules that have reached equilibrium the density of an object with the volume of 60.0 mL and a mass f 400.0 g ... 
Chemistry
Ammonia, at stp, 1.5L of N2 reacts with 4.5L of H2, if N2 and H2 are consumed, what volume of NH3 at stp will be produced? 
Chemistry
Hi there  My labs and lectures aren't in synch at the moment so we are now doing a prelab that is asking for info I haven't been taught yet uggg... The prelab question I'm having trouble with is as follows: What is the volume at STP for 0.415 g of argon gas? Also, what is the... 
#2 chemistry
2CO(g) + O2(g) ==> 2CO2(g) A. If 16.01 L of oxygen is reacted at STP, how many moles of carbon dioxide is produced? B. If 1.722 mol of carbon monoxide is reacted at STP, what volume of carbon dioxide is produced? C. At STP, what volume of oxygen is needed to produce 82.1 g ... 
Physics
At what temperature is the rms speed of helium molecules half its value at STP (0 C, 1.0 atm})?(answer in K) I think i need to use V_rms=sqrt3kT/m k=1.38e^23J/K helium has 4g so i think helium molecule is 4/6.02e23 but i don't know how to proceed further then i have to answer... 
chemistry
Suppose 100 mL of NO at STP is mixed with 400 mL of O2 at STP. 2 NO (g) + O2 (g)> 2 NO2 (g) After the reaction goes to completion, what is the partial pressure of NO2 in the resulting mixture of gases at STP? I know the relation between pressure and volume is P1V1=P2V2, ... 
Chemistry
Tutors: thanks for your help. Is this how this problem is solved ? A sample of Xenon gas at 20degrees celcius and 0.570atm is cooled to a pressure of 0.100atm. If the volume remains constant what is the final temperature in degree celcius? Solution: Using GayLussac's Law to ... 
chemspeed at STP
Hi we were given this question and I have no clue how to figure it out...please help! Which gas molecules have the greatest average speed at STP? [a] SO2( sulfur dioxide) [b] NH3( ammonia) [c] O2( oxygen) [d] N20 (Dinitrogen oxide) Ok, at stp, that means they all have the ... 
chemistry
A gas mixture is composed of 4.3 grams of hydrogen (density at STP = 0.089 g/L) and 2.9 grams of helium (density at STP = 0.179 g/L). What is the percentage (v/v) helium in the mixture? If v/v = Volume of gas/total volume how would we find the volume of both of the gases? 
chemistry 101
calculate the molecules of oxygen required to react with 28.4g of sulfur in the following reaction? a)1.60 * 10 **24 molecules b)3.56 * 10**23 molecules c)2.67 * 10**23 molecules d)5.33 * 10**23 molecules e)8.00 * 10**23 molecules 
chemistry
what happens when solids, liquids, and gases are heated/cooled? Most expand if heated; contract if cooled. Solids, if heated high enough will melt and the liquid may occupy less volume than the solid. Likewise, liquids, if heated high enough, will boil and the volume of the ... 
Chemistry
If the average velocity of O2 molecules at STP is 3.4*10^3 meters/sec, what is the average velocity of H2 molecules at the same temperature and pressure? 
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... 
Chemistry 22
1. What is the Kelvin temperature of a system in which 4.50 mol of a gas occupy 0.250 L at 4.15 atm? 2. In the lab, students generated and collected hydrogen gas according to the following equations: Zn + H2SO4> H2 + ZnSO4 a) How many mL of hydrogen gas at STP were ... 
Chemistry
Given 175 liters of SO3 at 800 torr and 100 degrees C, find the volume at STP, give the mass of the sample and give the number of molecules in the sample. Can somebody please explain how I figure this out? I'm so lost. :{ 
Physical science
I need help on how to set up a formula for 27c and 750 mm hg,a sample of hydrogen occupies 5.00 l how much space will it occupy at stp 
Chemistry
Please let me know how I'm doing with the following chemistry problems. I appreciate your imput. Here's problem 1: A sample of Helium gas occupies a volume of 29.4mL AT 18deg.celcius. (a)Would the volume of this gas sample be doubled at 36deg.celcius? (b)At what temperature(... 
chem
i have several problems i am caught on for my homework. I appreciate any help 1. As milk spoils, rancid components begin to coagulate. This could be interpreted as a: a.a colloid forming a suspension. b.solution forming a colloid. c.solution forming a suspension. d.suspension ... 
chemistry
1 ) A sample of vapor occupies a volume of 125 ml at 100 celcius and 748 torr. What is its volume under STP conditions? 2) A sample of vapor weighing 0.745 g filled a 250 ml flask when placed in a water bath at 98 degree celcius. The barometric presure that day was 753 torr. ... 
chemistry
Calculate the number of grams of reactant left over when 28.35 grams of silver reacts with 50.0 liters of air at STP which is 20.9476 % oxygen by volume. The density of air at STP is 1.292 g/L. attemtp at solution volume of oxygen= .209476*50L=10.5L How do i go from volume of ...