# 3. A gas is confined in a 0.47-m-diameter cylinder by a piston, on which rests a weight. The mass of the piston and weight together is 150 kg. The atmospheric pressure is 101 kPa. (a)What is the pressure of the

61,023 results, page 87-
## physics

A chair of weight 150 lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of = 38.0 directed at an angle of 41.0 below the horizontal and the chair slides along the floor.Using Newton's laws, calculate , the -
## physics

A chair of weight 150 lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of = 38.0 directed at an angle of 41.0 below the horizontal and the chair slides along the floor.Using Newton's laws, calculate , the -
## physics

A chair of weight 150 lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of = 38.0 directed at an angle of 41.0 below the horizontal and the chair slides along the floor.Using Newton's laws, calculate , the -
## physics

A chair of weight 150 lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of = 38.0 directed at an angle of 41.0 below the horizontal and the chair slides along the floor.Using Newton's laws, calculate , the -
## Math, statistics

A trucking firm delivers appliances for a large retail operation. The packages (or crates) have a mean weight of 306 lb. and a variance of 2209. (Give your answers correct to four decimal places.) (a) If a truck can carry 4070 lb. and 25 appliances need to -
## math

The average air pressure at sea-level will support the column of mercury in a mercury barometer to a height of 760 mm (29.92 in.). If water were used in place of mercury in the barometer, what would be the height of the water column at average sea-level -
## chemistry

Calculate the density of M&M’s given the following data: Mass of 250.0 mL beaker = 197.816 g Mass of beaker and 20 M&M’s = 342.816 g Volume of water in graduated cylinder = 8.0 mL Volume of water in graduated cylinder and 10 M&M’s = 18.5 mL (Points : -
## Chemistry

1. How much heat is absorbed when 63.7g H(small 2)O [water](l) at 100 degrees C and 101.3 kPa is converted to steam at 100 degrees C? Express your answer in kJ. Is there an equation? 2.How much heat (in kJ) is released when 0.677 mol NaOH(s) is dissolved -
## chem

(5) In this experiment MnO4-is reduced to Mn 2+ by the unknown. What is the equivalent weight of MnO4- for this experiment? 52.68 (6) How many equivalents of electrons were transferred from the unknown solution? (7) What is the Normality of the 1.00 mL of -
## CHEMISTRY

the osmotic pressure of blood at 37 degrees is 7.56atm. what mass of glucose should be dissolved per litre of solution for an intravenous injection to be isotonic with blood? -
## CHEMISTRY

the osmotic pressure of blood at 37 degrees is 7.56atm. what mass of glucose should be dissolved per litre of solution for an intravenous injection to be isotonic with blood? -
## Physics

A man of mass 75 kg lies on a bed of 10,000 nails. The tip of each nail has an area of 1.0 square millimeter. What pressure does the man experience? [g=10 N/kg] -
## CHEMISTRY

the osmotic pressure of blood at 37 degrees is 7.56atm. what mass of glucose should be dissolved per litre of solution for an intravenous injection to be isotonic with blood? -
## science

an elephant of mass 500kg stands with all four feet on the ground. each foot has an area of 0.08m^2.calculate the pressure exerted on the ground.[g=10m/s^2] -
## Physics

A cyclist and his bicycle have a combined mass of 55kg. Total area of the tyres in contact with the road is 2.2 in contact with pressure exerted by the two on the ground. -
## Chemistry

Calculate the volume of amonia gas is produced at STP when 140g of nitrogen gas reacts with 30g of hydrogen gas (Atomic mass N=14u,H=1u) -
## Pensacola State

The solubility of NH3 in H20 is 518 g/L at a partial pressure of 760.0 torr. 1. Calculate the value of the Henry's Law constant for NH3. 2. calculate the solubility of NH3 in H2O at a partial pressure of 225.0 torr. -
## physics- help me please

The pressure at the bottom of a glass filled with water (ρ = 1000 kg/m3) is P. The water is poured out and the glass is filled with mercury (ρ = 13.6 ✕ 103 kg/m3). The pressure at the bottom of the glass is now which of the following? -
## Geo

What is the altitude of this cylinder: B ==> C? A. line BC B. segment BC C. ray BC D. Point BC MY ANSWER: A. Line BC What is the total surface area of this cylinder? Radius = 8 cm Height = 16 cm A. 128 pi cm^2 B. 256 pi cm^2 C. 384 pi cm^2 D. 1024 pi -
## Chemistry

Fill a balloon with helium gas to a volume of 2.68 L at 23 celsius and 789mmHg. What would the volume of helium if the pressure changes to 632 mmHg but the temperature is unchanged. This is how I solved it V2 = V1 X P1/P2 2.68L X 789/632 = ANSWER V2 =.3.35 -
## Chemistry

Ten kilograms of hydrogen gas are mixed with 355 kg of chlorine in a 0.50 mm^3 drum. The two gases react to produce hydrogen chloride. What is the final pressure in the drum if the final temperature is 60 degrees celcius? -
## statistics

The owner of a bottling company is considering buying a new bottling machine. He has been testing two different machines that are being considered. After collecting 300 samples from each machine over several weeks, he was able to conduct a two sample z -
## Density of Gas at STP

Hi Can anyone explain how to calculate the density in g l -1 of a gaseous oxide at STP. I don't understand the term g l -1 !! Thank You "g l-1" should have the -1 as a superscript, meaning g l^-1, or g/l. It means they want the density in grams per liter. -
## AP Chem

For the following equilibrium system, which of the following changes will form more CaCO3? CO2(g) + Ca(OH)2(s) <--> CaCO3(s) + H2O(l) deltaH(rxn) = -113 kJ My choices are: a) Decrease temperature at a constant pressure (no phase change) B) Increase -
## chemistry

What effect does raising the temperature of the reaction chamber at a constant pressure have on the following reaction at equilibrium? 2NO2(g) N2O4(g) + heat A. The equilibrium shifts toward the reactants because the reverse reaction is endothermic. B. The -
## chemistry

a sample of gas has a volume of 6.00L at 20.0 degrees celcius . what will be its volume at 40.0 degrees celcius pressure remaining constant -
## Physics

A block of mass m1= 3.70kg rests on a 30degree incline and is held stationary by a mass of 1.3kg hanging vertically over a frictionaless pulley at the top. Calculate the value of u (coefficent of friction) -
## chemistry

A sample of argon initially has a volume of 5.0 L and the pressure is 2 atm. If the final temperature is 30° C, the final volume is 6 L, and the final pressure is 8atm, what was the initial temperature of the argon? -
## physics

A fishtank with inside dimensions of 30.5 cm X 61 cm X 30.5 cm is filled with water. What is the volume in cm3 of water required? What is the mass in grams of the water required? What is the mass in kilograms? The fishtank above measures 1 ft X 2 ft X 1 ft -
## College Algebra

find the average weight in pounds of a type of bird of your choice. Use the rational exponent equation L = 2.43 * W^0.3326 to estimate the wingspan L in feet of the bird that weighs W pounds (Rockswold, 2006). Include in your post the type of bird and the -
## PHYSICS HELP 3RD REQUEST

A box rests on a plank that is inclined to the horizontal. As the angle between the plank and the horizontal increases, does the component of the weight of the box parallel to the plank increase, decrease, or remain the same? Please just answer Suzanne, -
## physics

Superman must stop a 120km/h train in 150m to keep it from hitting a stalled car on the tracks.If the train's mass is 3.6x10^5kg,how much force must he exert?Compare to the weight of the train (give as%). -
## physics

In,a,homecomming,competition,16,students,lift,a,sports,car.While,holding,the,car,off,the,ground,each,student,exerts,an,upward,force,of,400N.,(a)What,is,the,mass,of,the,car,in,kilograms?,(b)What,is,the,weight,in,pounds -
## Physics

A rocket with a mass of 345 kg is launched vertically. the engine produces a thrust of 17000 N. Neglect air resistance. a. How would I determine the weight of the rocket? b. What is the net force being applied to the rocket? -
## chemistry

A sample of NH4HS (s) is placed into a 2.65 L flask, containing 0.140 mols of NH3 (g). NH4++++>>nh3 (g) + h2s (g) KP = 0.108 wHAT will be the total gas pressure at 25 degrees in atm. I got about 1.361...i don't kno what im doing wrong. im multiplying -
## chemistry

A sample of NH4HS (s) is placed into a 2.65 L flask, containing 0.140 mols of NH3 (g). NH4++++>>nh3 (g) + h2s (g) KP = 0.108 wHAT will be the total gas pressure at 25 degrees in atm. I got about 1.361...i don't kno what im doing wrong. im multiplying -
## physics

a boy of mass 40kg and a girl of 30kg play on a see saw of negligible weight.if the boy sits 270cm from the pivot of the see-saw where must the girl sit to make it balance -
## physics

a metal bar 70cm long and 4.00 kg in mass supported on two knief -edge placed 10 cm from each end. a 6.00 kg weight is suspended at 30 cm from one end . find the reaction at the knife-edge ? -
## Chemistry

A protein found in some types of wood-rotting fungi is 0.40% copper by mass. Each protein molecule is known to contain 4 copper atoms. What is the approximate molecular weight of this compound? -
## physics

Calculate the mass of Jupiter knowing that a person who weighs 490 N on the earth's surface would weight 1293 N on the surface of that planet. Jupiter has a radius of 7.15 × 107 m. -
## chemistry

Ca(ClO3)2 + KCl --> CaCl2 + 3O2 + KCl Mass of test tube = 7.918g Mass of KCl/Ca(ClO3)2 mixture + tube = 19.164g Mass of KCl/CaCl2 residue + tube = 18.635g What is the weight % of Ca from the Ca(ClO3)2 impurity in the original mixture? -
## Physics

Safety engineers estimate that an elevator can hold 20 persons of 65 kg average mass. The elevator itself has amass of 450 kg. Tensile strength tests show that the cable supporting the elevator can tolerate a maximum force of 2.94e4 N. What is the greatest -
## Physics

Does a 2-kilogram rock have twice the mass of a 1-kilogram rock? twice the inertia? twice the weight (when weighed in the same location?) -
## science-chemistry

please anwser soon, a rigid 4.10L flask contains a mixture of 1.25 moles of H2, 0.250 mole of O2, and sufficient Ar so that the partial pressure of Ar in the flask is 1.00 atm. The temperature is 63.5 degrees C A) Calculate the total pressure in the flask -
## chem

The reaction AB(aq)->A(g)+ B(g)is second order in AB and has a rate constant of 0.0282 M^{-1} s^{-1} at 25 Celsius. A reaction vessel initially contains 250 mL of 0.105 M AB which is allowed to react to form the gaseous product. The product is collected -
## chemistry

For 2SO2(g)+O2(g)⇌2SO3(g), Kp=3.0×104 at 700 K. In a 2.00-L vessel the equilibrium mixture contains 1.15 g of SO3 and 0.107 g of O2. 1) How many grams of SO2 are in the vessel? ---------------------------- A flask is charged with 1.500 atm of N2O4(g) -
## Science

A stone with a mass of 225.0g is placed into a graduated cylinder with a starting volume of 200.0ml. If the water in the cylinder is displaced to 225.0 ml, calculate the volume of the rock and its density. -
## (1-16)Chemistry - Science

Consider the reaction: SO2 (g) + NO2 (g) ==> SO3 (g) + NO (g) At T = 1000 K, where the reaction is exothermic with an equilibrium constant K = 9.00 The reaction vessel is charged initially with all four gases, each at a pressure of 0.5 atm. After -
## chemistry

I was having trouble with this problem. initial pressure for the compounds involved in the reaction displayed were determined to be P(CO(g)) = 0.5794 atm, P(H2O(g)) = 0.5662 atm, P(CO2(g)) = 0.7950 atm, P(H2(g)) = 0.2754 atm. Calculate the value of the -
## maths

two pulley rotate at 150 rpm and 300 rpm. the diameter of the larger pulley 15cm if the pulley are connected by belt . what is the diameter of the smaller pulley. -
## earth

#16 the inner core of the earth is solid because of increased__________ a> density and composition b> density and temperature c> temperature and pressure d> pressure and density -
## Chemistry

What volume of gas can be produced in a lab where pressure is 16.0 psi and temperature is 25 C if you collect it over water from the reaction of 50g of ammonium sulfate with 50g of aluminum hydroxide. The equation for the reaction is: 3(NH4)2SO4 + 2Al(OH)3 -
## Chem

What is the change in entropy when 6.03 mL of liquid benzene (C6H6, d = 0.879 g/mL) is combusted in the presence of 26.8 L of oxygen gas, measured at 298 K and 1 atm pressure? (R = 0.0821 L · atm/(K · mol)) 2C6H6(l) + 15O2(g) → 12CO2(g) + 6H2O(l); -
## English

1. Wrie down your woriries and work in pairs to comfort/console each other by using the model dialogue in Part A. -------------- Can we use both verbs, comfort and console in this sentence? 2.I am worried about my brother who is into computer games. Why -
## Chemistry

Butene H2C=CH-CH2-CH3 can be reacted to form isotactic polybutene (PB). (a) Would you expect isotactic polybutene to melt at a higher or lower temperature than atactic polybutene of the same molecular weight? I)Higher T II)Lower T (b) Is isotatic -
## Mat 116/algebra

A cylinder has a radius of 5 in. If the volume of the cylinder is 250 ¦Ðr¡¼in¡½^3, what is the height of the cylinder? Volume cylinder is AreaBase*height where area of the base is PI*r^2 Volume=PI*r^2 * h solve for h. -
## chemistry

Butene H2C=CH-CH2-CH3 can be reacted to form isotactic polybutene (PB). (a) Would you expect isotactic polybutene to melt at a higher or lower temperature than atactic polybutene of the same molecular weight? Higher T Lower T (b) Is isotatic polybutene a -
## statistics

Jesse took two data points from the weight and feed cost data set and calculated a slope, or average rate of change. A rat weighs 3.5 pounds and costs $4.50 per week to feed, while a Beagle weighs 30 pounds and costs $9.20 per week to feed. Using weight as -
## statistics

Jesse took two data points from the weight and feed cost data set and calculated a slope, or average rate of change. A rat weighs 3.5 pounds and costs $4.50 per week to feed, while a Beagle weighs 30 pounds and costs $9.20 per week to feed. Using weight as -
## pre algebra

A cylinder has a circumference of 16pi inches and its height is half the radius of the cylinder? What is the total surface area of the cylinder? Give answer in terms of pi. do not know how to do this....please help -
## chemistry

I need to find the radius of a cylinder with only the following info: Cylinder height=125um There is 1 C atom/0.01848 nm^2 There are 5.75x10^10 C atoms on the surface of cylinder Use quadratic formula to solve -
## Math

You have 200 feet of fencing to enclose a rectangular plot that borders on a river. If you do not fence the side along the river, find the length and width of the plot that will maximize the area _____________________________________ Among all pairs of -
## Math

The circular base of a cylinder has a diameter of its height is 5cm. Taking PI to be 22/7 find its volume -
## math

How tall would a glass (in the shape of a right circular cylinder)with a diameter of 3 inches need to be to hold 12 ounces. -
## Math

The surface area of a cylinder is 200cm. The diameter is equal to the height. Find the radius. -
## Mathematics

Find the volume of a closed cylinder with thickness 1.2cm and diameter 17.1cm take pie=3.14 -
## math

How tall would a glass (in the shape of a right circular cylinder)with a diameter of 3 inches need to be to hold 12 ounces. -
## Math

How tall would a glass (in the shape of a right circular cylinder)with a diameter of 3 inches need to be to hold 12 ounces. -
## Geometry

How tall would a glass (in the shape of a right circular cylinder)with a diameter of 3 inches need to be to hold 12 ounces. -
## Math

The surface area of a cylinder is 200cm. The diameter is equal to the height. Find the radius. -
## Geometry

How tall would a glass (in the shape of a right circular cylinder)with a diameter of 3 inches need to be to hold 12 ounces. -
## math

A cylinder tank has a capacity of 3080cm cube. If its depth is 20cm, find its diameter. -
## geometry

a cylinder that has a diameter of 2.5in. and length of 5.5ft, determine the volume of a) inches; b)feet -
## nait

what is the surface area of a cylinder with a diameter of 4cm and height of 6 cm? include the areas of the ends -
## math

what is the total surface area in meters of a cylinder that is 12m in diameter and 14m in height -
## Chem

At room temperature and pressure RbI crystallizes with the NaCl-type structure. (a) Use ionic radii to predict the length of the cubic unit cell edge. (b) Use this value to estimate the density. (c) At high pressure the structure transforms to one with a -
## Physics

Early skeptics of the idea of a rotating Earth said that the fast spin of Earth would throw people at the equator into space. The radius of Earth is about 6400 km. Show why this objection is wrong by determining the following information. (a) Calculate the -
## physics

Early skeptics of the idea of a rotating Earth said that the fast spin of Earth would throw people at the equator into space. The radius of Earth is about 6400 km. Show why this objection is wrong by determining the following information. (a) Calculate the -
## Pre-Calc

Gold weighs 19.3 grams per cubic centimeter (cc), and silver weighs 10.5 grams per cc. A. Write a formula for the weight of one cc of a mizture of silver and gold in terms of the volume of gold in the cc. B. If one cc of mizture weighs 12.7 grams, what is -
## Quantum Physics

A particle of mass 2.00×10^−10 kg is conﬁned in a hollow cubical three-dimensional box, each edge of which has a length, 2.00×10^−10 m, and for which the potential energy function is zero inside, and inﬁnite outside, the box. The total energy of -
## AP CHEM-URGENT PLEASE

at 25 degrees C liquid A has a vapor pressure of 100.0 torr, while liquid B has a vapor pressure of 200.0 torr. The heat of vaporization of liquid A is 32.0 kJ/mol and that of liquid b is 18.0 kJ/mol. At what celsius temperature will A and B have the same -
## chemistry

What volume of oxygen gas can be collected at 1.26 atm pressure and 2.00◦C when 39.7 g of KClO3 decompose by heating, according to the following equation? 2 KClO3(s) ∆/MnO2 −−−−→ 2 KCl(s) + 3 O2(g) Answer in units -
## Chemistry

A person accidentally swallows a drop of liquid oxygen, O2 (l), which has a density of 1.149 g/mL. Assuming the drop has a volume of 0.050 mL, what volume (mL) of gas will be produced in the person’s stomach at body temperature (37 °C) and a pressure of -
## chemistry

The organic compound di-n-butyl phthalate, C16H22O4(l), is sometimes used as a low-density (1.046 g·mL–1) manometer fluid. Compute the pressure (in torr) of a gas that supports a 585-mm column of di-n-butyl phthalate. The density of mercury is 13.53 -
## chemistry

What volume of oxygen gas can be collected at 0.565 atm pressure and 48.0◦C when 42.9 g of KClO3 decompose by heating, according to the following equation? 2 KClO3(s) ∆−−−−→2KCl(s) + 3O2(g) MnO2 -
## Chemistry

A mixture containing 0.5 mol of H2 (g) and 0.5 mol of I2 (g) was introduced into a 10L container at a temperature of 448 C. At this temperature the equilibrium constant Kp is 50. i. What is the total pressure in the container before the reaction starts and -
## 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 -
## Chemistry

A mixture containing 0.5 mol of H2 (g) and 0.5 mol of I2 (g) was introduced into a 10L container at a temperature of 448 C. At this temperature the equilibrium constant Kp is 50. i. What is the total pressure in the container before the reaction starts and -
## dynamics

Find the mass center of a cylinder with height L and a hemisphere glued to the top with radius R. L=2R. The cylinder is standing up on its bottom end with hemisphere on top. Im so lost on this and cant use the formula to work. -
## chemistry

an aluminum cylinder is 10.0 cm in length and has a radius of .25 cm. if the mass of a single atom of aluminum is 4.48X10^-23 calculate the number of aluminum atoms present in the cylinder. the density of aluminum is 2.70 g/cm^3 Please answer quickly. -
## pre calc, also forget my previous question

so at sea lvl pressure is 14.7. EVERY 30 FT DESCENT ITS INCREASES BY 14.7 PSI MORE. what is the pressure at 1000ft. my question is what would be the first term 14.7 or 29.4. AS 14.7 would be the 0 term. term 1 would be 29.4 as its 30 ft below. sea lvl -
## Chemistry

A solution is made by mixing 42.0 mL of ethanol, C2H6O, and 58.0 mL of water. Assuming ideal behavior, what is the vapor pressure of the solution at 20 C in torr? Values at 20C ethanol density: 0.789 g/mL & vapor pressure (torr): 43.9 torr water: denisty: -
## chemistry

An experiment was conducted in which many pieces of data were collected. Considering all of the data, the limiting number of significant figures in the experiment was 3 significant figures. One of the values needed in these calculations was the barometric -
## Physics

A roller in a sheet-metal processing plant has a diameter of 1.77 m and a mass of 5871 kg. Assume the roller is a solid cylinder. a) What is the moment of inertia of the roller? b) What is the kinetic energy of the roller when it spins at 4.28 rad/s? -
## chemistry

A sample of natural gas is 85.2% methane, CH4, and 14.8% ethane, C2H6, by mass. What is the density of this gas mixture at 18.0°C and 771 mmHg? Assume ideal gas behavior. -
## chemistry

during an effusion experiment, oxygen gas passed through a tiny hole 2.5 times faster than the same number of moles in another gas under the same conditions. What is the molar mass of the unknown gas? -
## chemistry

What is the volume of dry O2 gas at STP, if it had a volume of 5.00 L at 103 kPa and 300 K? -
## Physics

A grain bucket conveyor (grain leg) raises soybeans from the ground level up to the peak of its height, h= 150 ft. A bushel of soybean weight, W=60 lb/bu. The bucket elevator can deliver, Q= 120 bu/min, to the top spout. The motor shaft power to drive the -
## algebra1

A rule of thumb states that the ideal weight (in ounces) of a baseball bat for a high school player is 5 ounces more than one third of the player's height (in inches). Write an expression that describes the ideal weight in ounces of a bat for a high school -
## Chemistry

A protein found in some types of wood-rotting fungi is 0.40% copper by mass. Each protein molecule is known to contain 4 copper atoms. What is the approximate molecular weight of thos compound?