Gaseous and liquid states Questions and Answers

A sample of 31 6 mL of krypton gas Kr is at 756 mm Hg and 25 0 C What is the new volume if the pressure is decreased to 206 mm Hg and the temperature is decreased to 12 5 C Volume References mL

A sample of 0 255 mole of gas has a volume of 748 mL at 28 C Calculate the pressure of this gas R 0 0821 L atm mol K 8 42 atm none of the above 0 00842 atm 7 84 x 10 4 atm

A sample of a gas mixture contains the following quantities of three gases compound CO CO SF6 CO CO2 mass The sample has volume 2 50 L temperature 16 6 C SF6 3 13 g What is the partial pressure for each gas in mmHg What is the total pressure in the flask total 1 39 g 2 58 g mmHg mmHg mmHg mmHg

Gas Law A balloon holds 27 4 kg of helium What is the volume of the balloon if the pressure is 1 12 atm and the temperature is 22 C L

Current Attempt in Progress A 8 52 L sample of nitrogen at 25 0 C and a pressure of 0 955 atm is compressed to a volume of 4 36 L and a pressure of 4 53 atm What must its final temperature in C be

Current Attempt in Progress What will the temperature of a2700 mL sample ofnitrogenat 1020 mm Hg and 44 8 C be in C after it changes to 1200 mm Hg and 5500 mL Put your answer with 3 significant digits i

Using the heating curve of water below what state s of matter can be found at Step 4 2 eurgeedway 100 50 Heating Curve of Water Solid and liquid Solid liquid and gas Liquid and gas Liquid Time

the same temperature and pressure The reaction is 2C4H10 g 1302 g 8CO2 g 10H O g Part 1 Great job Move on to the next part What is the correct conversion for mL of C4H10 to mL of O 13 mL 0 2 mL C4H10 1 mL 0 1 mL C4H10 2 mL C4H10 13 mL 0 eTextbook and Media Attempts 1 of 15 use

References A sample of 21 4 L of SO gas at 10 0 C is heated at constant pressure until it fills a volume of 79 5 L What is the new temperature in C C

14 Assume that the following reaction has already attained equilibrium 2SO2 g O2 g 2S03 g Which way will the reaction shift if the pressure is decreased b Which way will the reaction shift if the pressure is increased

If A S is calculated to be positive there is greater disorder in the would drive the reaction in the direction Products Forward Reactants Reverse Reactants Forward whi

The heat of vaporization of bromine at its boiling point 59 6 C at 1 00 atm is 29 54 kJ mol Calculate the vapor pressure of bromine at 25 6 C O 46 2 torr O 225 torr O 760 torr O 326 torr

Suppose a mixture containing 2 52 g H and 31 2 g NO has a total pressure of 2 40 atm What are the partial pressures of both gases in the mixture PH i PNO i atm atm

8 A 700 mL gas sample at STP is compressed to a volume of 200 L and the temperature is increased to 30 0 C What is the new pressure of the gas in Pa 9 At STP what is the volume of 7 08 mol of nitrogen gas

3 Determine the Universal Gas Constant R in units of psi qt mol K given that 1 mole of ideal gas has pressure of 14 7 psi and occupies a volume of 23 7 quarts at a temperature of 0 C

The molecular view of a gaseous mixture is shown Arrange the three components of the gaseous mixture in order of increasing partial pressure Lowest partial pressure O

Use bond energy values to estimate AH for the following AH CEN 891 kJ mol 305 kJ mol 432 kJ mol 413 kJ mol N H 391 kJ mol C N H H C H HTC H I N I H H CN g 2 H g H C N g H

A weather balloon typically has a volume of 500 0 L What will the volume be if the temperature drops from 25 0 C to 40 0 C tion

Use the information and graphs to answer the following question The student is asked to graph the relationship between pressure and volume based on experimental data Graph A Graph B Which graph BEST represents the relationship Graph A because there is an inverse indirect relationship between pressure and volume Graph A because there is a direct relationship between pressure and volume Graph B because there is an inverse indirect relationship between pressure and volume Graph B because there is a direct relationship between pressure and volume

Methane CH4 effuses at a rate of 2 45 mol s What will be the effusion rate of argon Ar under the same conditions

What kind of intermolecular forces act between a tetrachloroethylene C C14 molecule and a neon atom Note If there is more than one type of intermolecular force that acts be sure to list them all with a comma between the name of each force

What is the volume of 42 6 g nitrogen dioxide NO2 at STP Give your answer in 1 decimal

1 point A helium balloon in a closed car occupies a volume of 2 32 L at 40 0 C If the car is parked on a hot day and the temperature inside rises to 75 0 C what is the new volume of the balloon assuming the pressure remains constant

Charles s Law A sample of gas has a volume of 2 33 L at a temperature of 55 70 C The gas sample is cooled to a temperature of 5 99 C assume pressure and amount of gas are held constant Predict whether the new volume is greater or less than the original volume and calculate the new volume New volume larger or smaller New volume larger smaller

INTERACTIVE EXAMPLE The Combined Gas Law A gas in a flexible container has a volume of 0 43 L and a pressure of 1 1 atm at 388 K When the gas is heated to 491 K its volume expands to 2 5 L The new pressure of the gas in the flexible container can be determined using the gas laws QUESTION What is the new pressure of the gas References atm

A sample of gas has a volume of 449 mL at a pressure of 4 23 atm The gas is compressed and now has a pressure of 8 21 atm Predict whether the new volume is greater or less than the initial volume and calculate the new volume Assume temperature is constant and no gas escaped from the container New volume larger or smaller New volume Submit larger smaller Show Approach Show Tutor Steps

5 A gaseous mixture of O and N contains 22 8 nitrogen by mass What is the partial pressure of oxygen n the mixture if the total pressure is 785 0mmHg co

Write balanced equations for each of the following chemical reactions Garbs 6 Mg 02 MgO 7 8 Fe O2 Fe2O3 H O N2O3 HNO2 Na O H O NaOH

Use the picture to answer the following question Balloon before expansion Balloon after expansion What would be TRUE about the pressure if the volume of a balloon expands decreases increases O remains constant croa then decreases

12 A gas at 65 C occupies 4 22 L At what Celsius temperature will the volume be 3 87 L assuming the same pressure 42751 13 The volume of a gas is 275mL at 22 0 C and 0 974 atm What will the volume be at 15 0 C and 993 atm

6 A balloon is filled to a volume of 650 mL at a temperature of 25 degrees celsius The balloon is then cooled at constant pressure to a temperature of 150 K What is the final volume of the balloon 5points

What is the bonding structure of a molecule a A picture of the atoms and bonds b The specific connectivity between atoms c The three dimensional structure d The two dimensional structure

What are the conditions of STP for gas laws O 0K 1 atm O 2723 15 K 76 mmHg O 0 C 1 atm O 273 15 C 760 torr 298 15 K 1 atm

A gas collected when pressure is 800 0 mmHg has a volume of 380 0 mL What volume in mL will the gas occupy at standard pressure Assume temperature and number of moles are held constant Which gas law should you use use A Avogadro s B Boyle s C Charles s

The following is the word and chemical equation for this reaction With 8 grams of CuSO4 reacting with 3 grams of Fe what is the theoretical yeild of copper e s powder CuSO4 aq copper II sulfate FeSO4 aq iron II sulfate Cu s copper

Joseph Priestley was the first to prepare pure oxygen by heating mercury oxide HgO 2HgO s 2Hg 1 O g What volume of O2 gas is prepared at 25 C and 1 atm pressure by the decomposition of 17 2 g HgO Give your answer in 3 decimal places

15 Nitrogen and oxygen combine to form nitrogen dioxide according to the balanced equation below How many grams of nitrogen dioxide can be produced when 34 5 g of nitrogen reacts with 52 6 g of oxygen N 2 0 2 NO moles N moles O limiting reactant nitrogen or oxygen moles NO produced grams NO produced

Gas Laws A 6 2 L sample of gas is heated from 18 1 C to 91 2 C at constant pressure What is the final volume Give your answer in 1 decimal Upload your calculations in the Exam 3 Submission assignment

a How many moles of ammonium ions are in 0 612 g of ammonium carbonate mol

Which of the lines on the figure is the best representation of the relationship between the volume and pressure of a gas other factors remaining constant Volume L 0 0 O Line a Line b Line c O Line d O Line e a Pressure atm d

A mixture of gases contains 313 torr N 274 torr O2 and 283 torr Ar What is the total pressure of the mixture P i What is the mole fraction of O2 in this mixture The mole fraction of O torr P

Answer Calculate the new volume of a 200 0 L balloon when the pressure is suddenly tripled from latm quation

QUESTION 4 A 50 00 mL sample of Ca OH 2 aq required 46 78 mL of 0 04498 M HCI aq for complete neutralization Find the molarity of the original Ca OH 2 aq solution O a 0 001052 M O b 0 02104 M c 0 02104 M Od 0 04208 M Oe 0 08416 M

2 Convert the pressure of 15 9 cm of water column to mm Hg using the given equation hH 0 13 6 AP

Some commercial drain cleaners contain a mixture of sodium hydroxide and aluminum powder When the mixture is poured down a clogged drain the following reaction occurs 2NaOH aq 2Al s 6H O 1 2NaAl OH 4 aq 3H g The heat generated in this reaction helps melt away obstructions such as grease and the hydrogen gas released stirs up the solids clogging the drain Calculate the volume of H formed at 24 5 C and 1 00 atm if 3 03 g of Al is treated with an excess of NaOH

Consider the reaction N g 3H g 2NH g AG s NH 16 66 kJ mol Determine the equilibdlum constant for this on at 298 151

a Give the expected hybridization of the central atom of POCl3 b Give the expected hybridization of the central atom of C1O2 Drag and drop your selection from the following list to complete the answer

A gaseous compound has a density of 1 65 g L at 47 1 C and 1 05 bar Assuming ideal behavior calculate the molar mass of the gas molar mass g mol

11 Some students react 18 mol AlBr3 with 24 mol K SO 2 AlBr3 3 K SO4 6 KBr Al2 SO4 3 a What is the limiting reactant b What is the excess reactant How many moles of KBr will form

The gas in a sealed can is at a pressure of 3 00 atm at 250C A warning on the can tells the user not to store the can in a place where the temperature will exceed 520C What would the gas pressure in the can be at 520C What law did you use to solve Make sure to show all work for partial credit if your answer happens to be incorrect Equations P V P V P P2 V V P V T T T T T P2V2 T