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0.65 of argon gas is admitted to an evacuated 60 container at 60 . The gas then undergoes an isochoric heating to a temperature of 500 .

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chemistry
A gas bubble with a volume of 1.0 mL originates at the bottom of a lake where the pressure is 3.00 atm. Calculate its volume when the bubble reaches the surface of the lake where the pressure is 695 torr , assuming that the temp doesn't change. I got 0.003 L, is that correct

chemisrty
Consider the reaction between sodium metal and chlorine gas to form sodium chloride (table salt). 2Na(s) + Cl2(g) 2NaCl(s) If 3.6 moles of chlorine react with sufficient sodium, how many grams of sodium chloride will be formed?

Science
a) How much lime and what volume of CO2 at NTP will be obtained from 10 kg of limestone? b) How much ferrous sulphide will be required to obtain 1.12 g of gas at NTP by chemical reaction between ferrous sulphide and very dil.Sulphuric acid?

Science
The warmest temperature occurs at _______ and why does the warmest daily temperature occur in mid-to-late afternoon rather than at the time if the highest sun angle? The coolest temperature of the day occurs at sunrise. Why?

chemistry
A sheet of gold weighing 11.4 g and at a temperature of 15.6°C is placed flat on a sheet of iron weighing 24.2 g and at a temperature of 54.9°C. What is the final temperature of the combined metals? Assume that no heat is lost to the surroundings. - (11.4)(0.129)(Tf – 15.6...

Chem
A 4.44 kg piece of granite with a specific heat of 0.803 J g-1 °C-1 and a temperature of 98.8°C is placed into 2.00 L of water at 24.8°C. When the granite and water come to the same temperature, what will the temperature be?

Chem 3
A 2.00 kg piece of granite with a specific heat of 0.803 J/g·°C and a temperature of 95.0°C is placed into 2.00 L of water at 22.0°C. When the granite and water come to the same temperature, what will that temperature be?

math
A roasted turkey is taken from an oven when its temperature has reached 185°F and is placed on a table in a room where the temperature is 76°F. (a) If the temperature of the turkey is 155°F after half an hour, what is its temperature after 45 min? (Round your answer to the ...

Chemistry
A gaseous oxide contains 30.4% of nitrogen, one molecule of which contains one nitrogen atom. The density of the oxide relative to oxygen gas is.........

chemistry-URGENT!!
A sample of ammonina gas at 65.5 degrees celsius and 524 torr has avolume of 15.31 L. What is it's volume at -15.8 degrees celsius and its pressure is 524 torr?

Chem...
1) what is the density of methane (CH4) at a temp. of 20C and a pressure of 684mm. 2) a gas has a density of 2.5g/L at a temp. of 20C and a pressure of 1.1 atm. what is its molar mass.

chemistry
write and balance Solid aluminum carbonate decomposes to form solid aluminum oxide and carbon dioxide and carbon dioxide gas

Chemistry
A gas has a volume of 2.5 L at 25 degrees Celsius and 742 mmHg. Calculate the volume at 55 degrees celsius and 825 mmHg. I got 2.5 L again. Is that possible?

Science :(
Which of the following describes the correct sequence of events during the water cycle? precipitation → condensation → evaporation → runoff condensation → precipitation → runoff → evaporation runoff → condensation → evaporation...

chemistry
When zinc metal is reacted with hydrochloric acid, zinc chloride and hydrogen gas are produced. If 16.4 ml of 2.14 M HCl are used: a) how many grams of zinc metal are needed to completely use up the acid? b) What will be the molarity of the aqueous product? Please show all ...

Chemistry 15
a vessel connected to an open-end mercury manometer is filled with gas to a pressure of .835 atm.the atmospheric pressure is 755 torr.In which arm of the manometer will the level of mercury be higher?What is the height difference between the two arms of manometer?

math
A cone-shaped glass and a tin can are filled with water. The height of the cone is 12" (12 inches) and it has a radius of 1.5" (1½ inches). The can is 2 inches high and has a diameter of 4 inches. Which container holds more water? How much more water does the larger container...

Pre-Calculus
A corpse was discovered in a motel room at midnight and uts temperature was 82°F. The temperature dropped to 80.5°F two hours later. Given k is a constant for the object in question, S is the surrounding temperature, t represents the time and theta(of time) is the ...

Physics
A 500 g sample of gold heated to 971.0 deg. C is placed in a calorimeter containing 220 g of water initially at 20.0 deg. C. If no heat is lost to the surrounding environment what will the final temperature of the water be? [HINT: At the end, the sample will be in thermal ...

math
The farmer wants to use the 500 m to an enclosure divided into two equal areas, What is the total maximum area that can is achieved with the 500 m fence. using differential calculus to the solution.

Chemistry
Stelco has been recently legislated to reduce total SO2 emissions from iron smelting operations. Select the most effective chemical reagent to desulfurize Stelco’s gas emissions a. CaCO3 b. CO2 c. HClO4 d. HI e. H2SO4 I believe the answer is A but I'm unsure with H2SO4.

chemistry
An electrical heater delivers 4.070 kJ of energy (as heat) to a system consisting of the gas inside a cylinder having a movable piston. As a result, the piston moves against a constant external pressure such that P ∆V = 2.442 kJ. What is the change in internal energy for...

Algebra
a car driver accelerates to a speed of 35 miles per hour and then takes her foot off the gas pedal even though she does not press the brake pedal at any time she eventually rolls to a stop which of the following most likely causes the car to come to a stop

physics
An airtight box has a removable lid of area 2.87 × 10-2 m2 and negligible weight. The box is taken up a mountain where the air pressure outside the box is 7.20 × 104 Pa. The inside of the box is completely evacuated. What is the magnitude of the force required to pull the ...

maths
When 6 boys were admitted and 6 girls left the %of boys increased from 60% to 75% . Find the original no. Of boys and girls in the clasa

chemistry
If I have CH3-CH3 and it undergoes a combustion reaction, what will be the products?

physics
The density of helium is 0.179kgm3.A Baloon hs a capacity of 27m3 and a mas of 12.5kg whn empty.a)fnd the total mas of baloon n gas.b)if dnsity of air is 1.29 kgm3 wht mas of air is displacd by the baloon

chemistry
Shown below is a rough sketch of the unary phase diagram (pressure vs. temperature) for carbon dioxide (CO2), dry ice. Note the diagram is not drawn to scale and contains breaks in the axes to signify this. Using the diagram, answer the following questions: (a) Give the ...

physics
An unknown mass of a certain solid, initially at 60⁰C, is heated at a uniform at a uniform rate. After 4.0 min the solid reaches its melting point of 80⁰C, and it remains at that temperature for 3.0 min until completely melted. After a further 6.0 min of heating, ...

chemistry
Data collected from the calorimetry of a metal mass of the metal = 110.62g initial temperature of the water in the cup = 23.0 C initial temperature of the metal in the boiling water = 99.02 C final temperature of the metal AND water in the cup=25.54C volume of the water =100....

Chemistry
Carbon tetracholoride is made according to the following reaction: carbon disulfide + chlorine gas yields carbon tetrachloride and disulfur dichloride. Write the correct balanced equation and then determine how many grams of CS2 are needed to make 16 kilograms of CCl4. (PLEASE...

physics
If a force of 60 N is exerted on a 15 kg object, calculate the acceleration that the object undergoes. ________m/s(squared)

Physics
An electron has an initial speed of 2.24 × 10^5 m/s. If it undergoes an acceleration of 2.2 × 10^14 m/s^2, how long will it take to reach a speed of 5.37 × 10^5 m/s

chemistry
A radionuclide undergoes alpha emission, and thorium-234 is produced. What was the original radionuclide?

Chemistry
A radionuclide undergoes alpha emission, and thorium-234 is produced. What was the original radionuclide?

Physical science
Determine the number of moles of sodium hydroxide produced when 2 moles of sodium and 3 moles of water react to form sodium hydroxide and hydrogen gas.

Math help please
1. At midnight, the temperature, t, is 13 degrees below zero. If the temperature is expected to rise 5 degrees for the next several hours, what equation could you use to determine what temperature it will be after h hours? T = -13h + 5 H = 5t + 13 T = 5h -13 T = 5h + 13 My ...

math
For this problem my equation is Y=70+110e^kt but i keep getting it wrong any suggestions? A roasted turkey is taken from an oven when its temperature has reached 185 Fahrenheit and is placed on a table in a room where the temperature is 75 Fahrenheit. (a) If the temperature of...

Math
For this problem my equation is Y=70+110e^kt but i keep getting it wrong any suggestions? A roasted turkey is taken from an oven when its temperature has reached 185 Fahrenheit and is placed on a table in a room where the temperature is 75 Fahrenheit. (a) If the temperature of...

chemistry
Classify the following properties of ozones as physical or chemical: 1.bluish color 2.pungent odor 3.reactive towards oxygen 4.decomposes to oxygen on exposure to ultraviolet light 5.it is a gas Is this correct? 1.chemical 2.physical 3.chemical 4.chemical 5.phsical

Algebra.
Terry and Ed start a lawn mowing business and purchase mowers and equipment for $800. They charge $20 for each lawn and $4 worth of gas for each job. How many laws must Terry and Ed mow before breaking even? a .34 lawns b. 40 lawns c. 50 lawns d. 20 lawns IS IT A ????

chemistry12_2016-4
Phosphorus(III) chloride, PCl3 is used in the manufacture of pesticides. It is made by the direct combination of phosphorus & chloride. Calculate the mass of PCl3 produced when 125 grams of P4 was allowed to react with 323 grams of chlorine gas?

physical science
If the absolute pressure of a gas is 550.280 kPa, its gage pressure is A. 101.325 KPa B. 277.280 KPa C. 448.955 KPa D. 651.605 Kpa

Chemistry
Given that many laboratory gases are sold in steel cylinders with a volume of 43.8 L, What mass (in grams) of argon is inside a cylinder whose pressure is 17810kPa at 24∘C? I've attempted this problem but I'm not getting the correct answer. Please explain if you can!

organic chemistry lab
A student wished to prepare ethylene gas by dehydration of ethanol at 140°C using sulfuric acid as the dehydrating agent. A low-boiling liquid was obtained instead of ethylene. What was the liquid, and how might the reaction conditions be changed to give ethylene? Please explain

organic chemistry lab
A student wished to prepare ethylene gas by dehydration of ethanol at 140°C using sulfuric acid as the dehydrating agent. A low-boiling liquid was obtained instead of ethylene. What was the liquid, and how might the reaction conditions be changed to give ethylene? Please explain

physics
A 1000m3 rocket weighing 2.0x10^3 kg is going to be launched into space. On ignition, gas is expelled from the bottom of the rocket at a speed of 2.4x10^3 m/s relative to the rocket. The rate at which the fuel is consumed is 8.02kg/s. Is there a time delay between ignition and...

Chemistry 1201
Butane, C4H10, is a component of natural gas that is used as fuel for cigarette lighters. The balanced equation of the complete combustion of butane is 2C4H10(g)+13O(g)-> 8CO2(g)+10H2O(l) At 1.00 atm and 23C , what is the volume of carbon dioxide formed by the combustion of...

Chemistry 1201
Butane, C4H10, is a component of natural gas that is used as fuel for cigarette lighters. The balanced equation of the complete combustion of butane is 2C4H10(g)+13O(g)-> 8CO2(g)+10H2O(l) At 1.00 atm and 23C , what is the volume of carbon dioxide formed by the combustion of...

Science
What factors might cause my contribution of carbon dioxide emissions to deviate substantially from the US national average of approximately 20 tons? I used CO2 emissions from electricity, natural gas, my car, waste (& reducing by recycling), and taking a short airplane trip ...

Chemistry
Which of these is more efficient on a large/small scale (power generation) and why? burning hydrogen to generate heat to drive turbines to produce electricity or directly producing electricity in a fuel cell reaction Can hydrogen be piped into homes, offices the way natural ...

chem
Alka-Seltzer contains the base sodium hydrogen carbonate, NaHCO3, which reacts with hydrochloric acid in the stomach to yield sodium chloride, carbon dioxide, and water. What volume of CO2 gas at 104.5 kPa and 311 K would be formed when 10.0 mL of 1.0 M HCl is mixed ...

Chemistry
When heated to 350. ∘C at 0.950 atm, ammonium nitrate decomposes to produce nitrogen, water, and oxygen gases: 2NH4NO3(s)→Δ2N2(g)+4H2O(g)+O2(g) Using the ideal gas law equation, calculate the volume, in liters, of water vapor produced when 21.8 g of NH4NO3 ...

chemistry
how many grams of solid calcium oxide must react with excess water to liberate the same quantity of heat as does the combustion of 24.4 l of methane gas (CH4), measures ar 24.7 c and 753 torr? CaO +H2O --> Ca(OH)2 Delta H = -65.2 KJ CH4 + 2O2 --> CO2 +2H20 Delta H=-890.3...

Chemistry 2
The equilibrium constant, Kc, for the following reaction is 1.54E-2 at 643 K. 2HI(g) H2(g) + I2(g) When a sufficiently large sample of HI(g) is introduced into an evacuated vessel at 643 K, the equilibrium concentration of I2(g) is found to be 0.351 M. Calculate the ...

physics
A 37.0 g ice cube at -15.0 degreesC is placed in 224 g of water at 48.0 degreesC. Find the final temperature of the system when equilibrium is reached. Ignore the heat capacity of the container and assume this is in a calorimeter, i.e. the system is thermally insulated from ...

physics
A 37.0 g ice cube at -15.0 degreesC is placed in 224 g of water at 48.0 degreesC. Find the final temperature of the system when equilibrium is reached. Ignore the heat capacity of the container and assume this is in a calorimeter, i.e. the system is thermally insulated from ...

physics
A 37.0 g ice cube at -15.0 degreesC is placed in 224 g of water at 48.0 degreesC. Find the final temperature of the system when equilibrium is reached. Ignore the heat capacity of the container and assume this is in a calorimeter, i.e. the system is thermally insulated from ...

chemisty
What volume of HCl gas at 25â—¦ C and 1 atm should be bubbled into 375 mL of a 0.680 M aqueous solution of HClO4 so that the pH of the resulting solution is 0? Assume that all the HCl dissolves and that the volume of the solution does not change with the addition of HCl.

Chemistry
A rubber balloon was filled with helium at 25˚C and placed in a beaker of liquid nitrogen at -196˚C. The volume of the cold helium was 15 cm3 Assuming ideal gas behavior and isobaric conditions, what was the volume of the helium at 25˚C?

physics
The density of liquid carbon dioxide is about 0.8 g/cm^3. What volume fraction inside the fire extinguisher (when full) is occupied by CO2? The density of CO2 gas is negligible compared to the density of liquid CO2. My answer was 75%. Please verify. Thanks.

Chemistry
Name and give the symbol for each of the following: a)the element in period 3 group 2 = Magnesium = Mg b)the halogen in period 4 = Bromine = Br c)the element in period 6 and group 11 = Gold = Au d)the akali metal in period 2 = Lithium = Li e)the noble gas in period 1 =Hydrogen?

physics
You press down on the gas on your car and accelerate through the mob of zombies in front of you. As you move 65 m through the swarm to get out of the place you've been hiding in, you estimate that the force of your car increases from 200 N to 780 N. Determine how much work ...

Chem
I just need to know if I did the problem correctly. The decomposition of phosphine, a very toxic gas, forms phosphorus and hydrogen in the following reaction: 4PH3(g) → P4(g) + 6H2(g) If the instantaneous rate of the reaction with respect to PH3 is -0.41 M s-1, what is ...

Calculas HS
A glass of cold milk from the refrigerator is left on the counter on a warm summer day. its temperature y (in degrees Fahrenheit) after sittin gon the counter t minutes is y= 72-30(0.98)^t Answer the question by interpreting y and dy/dt. 1. what is the temperature of the ...

Calculas HS
A glass of cold milk from the refrigerator is left on the counter on a warm summer day. its temperature y (in degrees Fahrenheit) after sittin gon the counter t minutes is y= 72-30(0.98)^t Answer the question by interpreting y and dy/dt. 1. what is the temperature of the ...

Chemistry
A mixture contains 5.0 g of He, 1.0 g of Ar, and 3.5 g of Ne. Calculate the volume of this mixture at STP. Calculate the partial pressure of each gas in the mixture at STP.

Physics
An aluminum baseball bat has a length of 0.87 m at a temperature of 20°C. When the temperature of the bat is raised, the bat lengthens by 0.00016 m. Determine the final temperature of the bat. °C

Physics
An aluminum baseball bat has a length of 0.87 m at a temperature of 20°C. When the temperature of the bat is raised, the bat lengthens by 0.00016 m. Determine the final temperature of the bat.

algebra
The formula F=9/5C+32 changes a temperature reading from the Celcius scale C to the Fahrenheit scale F. What is the temperature measured in degrees Fahrenheit when the Celsius temperature is -5°?

MATH AGAIN~Ms. Sue
from 4:00 P.M. to 3:00 A.M., the temperature dropped 6 degrees Fahrenheit. At 3:00 A.M.,the temperature was -4 degrees F. What was the temperature at 4:00 P.M.??? Ms. Sue i trust u more plz answer this thank u

Math
A 48-fluid-ounce container of orange juice costs $2.40.A 60-fluid-ounce container of orange juice costs $3.60. Which is a better buy????

math
Robert recently was hired as a technician in a firm. He is being paid $1250 every two weeks. His monthly bills are Rent $900 Electricity $110 Car $350 Car insurance$60 Gas $90 Groceries$180 Credit Cards$250 How much will he have for leisure spending in a given year?

chem thermo
consider a system consisting of 2.0mol co2(g) initially at 25c and 10atm and confined to a cylinder of cross section 10.0cm2. it is allowed to expand adiabatically against an external pressure of 1.0atm until the piston has moved outwards through a 20cm. assume that co2 is a ...

Chemistry
If a gas has a pressure of 3.0 atm at 12.8°C, what is its pressure (atm) at 25.9°C?

Chemistry
An experiment being conducted, the pressure is 0.9 atm and the temperature is 18 ° C. One of the steps of experience requires the combustion of 500 ml of ethanol (d = 0.78 g / ml). Whereas the burning this amount of ethanol does not significantly alter the enviroments ...

Chemistry
An experiment being conducted, the pressure is 0.9 atm and the temperature is 18 ° C. One of the steps of experience requires the combustion of 500 ml of ethanol (d = 0.78 g / ml). Whereas the burning this amount of ethanol does not significantly alter the enviroments ...

Calculus
A sphere with radius 1m has temperature 15 degrees C. It lies inside a con- centric sphere with radius 2m and temperature 25 degrees C: The temperature T(r) at a distance r from the common centre of the spheres satisfi es the di fferential equation: d^(2)T/dr^2 + 2/r(dT/dr) = ...

Math
A company pays commissions of 6% on the first $500 in sales and 8%on sales over $500.What is the commission on an $800 sale?

Math 6 proportion
21% reptiles, 11% are birds. There are a total of 1,500 animals in the zoo. Is this the correct proportion that I wrote to solve? 11/21 = r/1,500

science help
A scientist plans to find out the percent of teenagers who like science. She interviews 500 teenagers leaving a science museum and finds that 450 of them like science. The scientist concludes that 90 percent of teenagers like science. Why is the scientist's conclusion most ...

Math
Rosa poured 1 3/4 of orange juice into a container. She added 3 1/3 quarts of apple juice. She then poured 2 2/3 quarts of the mixed juice into a pitcher. How many quarts of mixed juice were left in the container?

science
I did this experiment below with 6% molasses, 12%, and 25% molasses solution and I don't know If I should do a bar or line graph. Yeast Populations Student Materials Yeast is a single-cell fungus that produces carbon dioxide as a byproduct of cellular respiration. The release ...

physics
A particle that undergoes simple harmonic motion has a period of 0.4 s and an amplitude of 12 mm. The maximam velocity of the particle is?

science
please help me with the following: The methanol production process is operated at 250 - 300 ºC & @ pressures of 50 - 100 atmospheres in the presence of a copperbased catalyst. Comment on whether these operating conditions, 250 - 300 ºC & 50 - 100 atmospheres, are consistent ...

Science
If a substance undergoes a chemical change, could its volume change?

Chemistry
I have to match the items to the statements below, and I'm stuck! A Dilute B Unsaturated C Saturated D Supersaturated 1. Sodium acetate solution after the excess solute fell out of solution. 2. There is visible solute on the bottom of the container. 3. The solution will ...

math-help
how could the reading goal be reached in ten weeks if only 500 students participated? 500*100=50,000/10=5,000

chemistry
a mixture of 0.500 mol H2 and 0.500 mol I2 was placed in a 2.00-L stainless-steel flask at 430C. Calculate the concentrations of H2, I2, and HI at equilibrium

Math
A car dealer pays commissions of 6% on the first $500 in sales and 8% on sales over $500. What is the commission on an $800 sale?

Math
If it costs $500 per ton to ship a vehicle, how much will it cost to ship a minivan that weighs 4,500 pounds?

Biochem
The Na –glucose symport system of intestinal epithelial cells couples the \"downhill\" transport of two Na ions into the cell to the \"uphill\" transport of glucose, pumping glucose into the cell against its concentration gradient. If the Na concentration outside the cell ([...

intro chem HELp please
1. Zinc is often used to calibrate calorimeters because it undergoes a very sharp phase transition from the solid to the liquid at 419.5oC. Calculate the enthalpy change when 5 g of zinc metal is heated from 100oC to the point where the entire sample is melted. (The heat of ...

Chemistry
How many grams of HCl are needed in order to make 0.500 liters of a 0.100 M HCl solution? 1.82 g 18.2 g 0.500 g

math
a petri dish starts out with 500 bacteria. The amount of bacteria increases 25% each minute. Y=500(25)????

Physics
An airtight box has a removable lid of area 1.19E-2 m2 and negligible weight. The box is taken up a mountain where the air pressure outside the box is 8.67E+4 Pa. The inside of the box is completely evacuated. What is the magnitude of the force required to pull the lid off the...

Chemistry
A tubular fluorescent lamp in a fully evacuated supply compartment on the international space station was originally filled with a small amount of mercury vapour. When the lamp began to flicker the astronauts complained there was a tiny hole in the tube. They measured that the...

accounting
Question 5: (50 points) E 5-11 Income (loss) recognition; percentage-of-completion and completed contract methods compared LO4 Brady Construction Company contracted to build an apartment complex for a price of $5,000,000. Construction began in 2006 and was completed in 2008. ...

chemistry
A sample of ammonina gas at 65.5 degrees celsius and 524 torr has avolume of 15.31 L. What is it's volume at -15.8 degrees celsius and its pressure is 524 torr?

English
Where is the gas station? 1. It's opposite to the flower shop. 2. It's opposite the flower shop. (Which answer is right? Are both OK? Then, which answer is commonly used?)

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