Gaseous and liquid states Questions and Answers

Problem C Sulfur trioxide gas decomposes into sulfur dioxide gas and O gas at 25 00 C in a 10 00 L sealed cylinder a Write a balanced chemical equation for this reaction b After sulfur trioxide decomposes completely the pressure inside the cylinder is 0 998 atm Determine the partial pressure of each gas after the reaction is complete if there are twice as many mols of sulfur gas than O gas

A sample of nitrogen gas in a 4 7 L container at a temperature of 35 C exerts a pressure of 5 7 atm Calculate the number of moles of gas in the sample mol

A sample of neon gas has a volume of 5 0 mL at a pressure of 1 50 atm What is the pressure exerted by the gas if the volume is increased to 30 0 mL at constant temperature O 0 25 atm O 9 0 atm O 1 5 atm O 0 21 atm

Which graph represents the relationship between volume and temperature of a gas at constant pressure O graph I O graph II O graph III O graph IV

At a birthday pool party the temperature is 28 50 C and the atmospheric pressure is 759 4 mmHg One of the decoration helium balloons has a volume of 6 25 L What would be the volume of the balloon if it were submerged in a swimming pool to a depth where the pressure is 922 3 mmHg and the temperature is 26 35 C

Question 20 An ideal gas contained in a V liter chamber exerts P pressure at temperature T in Kelvin Which of the following expressions is equal to the number of moles of the gas O PV RT PR VT OVT RP ORT VP 4 pts More than one answer is correct

Question 13 Which molecule shows the highest surface tension O HF O HCI HBr O HI O not enough information

Calculate the volume of a sample of gas at 5 25 atm if it occupies 5 64 L at 2 19 atm Assume constant temperature

Problem F Determine the density in g L of Argon gas at 0 00 C and 760 00 torr

8 A 125 0 mL sample of gas has a pressure of 45 0 kPa at 15 C What is the new temperature if the pressure is raised to 100 0 kPa and the volume decreased to 75 0 mL Equation

5 Calculate the pressure in atm of 0 138moles of Ne in a 5 00 L flask at 10 C Equation Answer

The reaction of 50 mL of Cl gas with 50 mL of CH4 gas via the equation Cl g CHA g HCl g CH Cl g will produce a total of kept constant a 100 mL of products if pressure and temperature are

Directions For problems 2 10 state the equation needed to solve each problem Then apply the equation showing work to solve the problem A 50 0 L tire has a pressure of 75 0 kPa at 45 1 C What is this volume at STP 2 Equation

D A sample of gas has a pressure of 0 75 atm at 0 C What is the new temperature if the pressure is doubled to 1 50 atm quation Answer

A balloon is filled with helium gas For the following question s select the letter of the balloon diagram that corresponds to the given change in conditions Initial Volume B The balloon is put into a chamber where the pressure is less than the atmospheric pressure OA 200000 B C A and B OB and C

What is the pressure in atm of each of the following These are the values of the pressures exerted individually by N2 O2 and CO2 respectively in typical inhaled air a For N 599 torr i b For O2 161 torr atm atm

X How many liters of 0 305 M KPO solution are necessary to completely react with 187 mL of 0 0184 M NICh according to the balanced chemical reaction 3 2 KPO aq 3 NiCl aq Nis PO s 6 KCl aq

When copper metal is added to nitric acid the following reaction takes place Cu s 4 HNO3 aq Calculate the volume of NO2 gas collected over water at 25 0 C Cu NO3 2 aq 2 H O 1 2 NO2 g when 4 95 g of copper is added to excess nitric acid if the total pressure is 726 mm Hg The vapor pressure of water at 25 0 C is 23 8 mm Hg

ndicate the direction of polarity of each of the covalent bonds by placing the appropriate delta notation next to each end ne bond C O O CI 0 F C N CI C S H 8 Answer Bank 8

A sample of argon with a volume of 6 18 L a pressure of 761 torr and a temperature of 20 0 C expanded to a volume of 9 45 L and a pressure of 373 torr What was its final temperature in C C

Why does a sample of water evaporates more slowly than a sample of rubbing alcohol of the same amount The sample of rubbing alcohol has a larger surface area The sample of rubbing alcohol has a higher viscosity O Intermolecular forces are weaker in the rubbing alcohol sample Rubbing alcohol is denser than water

A sample of oxygen gas has a volume of 300 mL at a pressure of 600 torr What volume will the gas occupy at 1800 torr pressure

sample of a gas has a pressure of 854 torr at 281 C To what Celsius temperature must the gas be heated to double its pressure there is no change in the volume of the gas 90

a What can you say about the molar masses of these two compounds Is molar mass a factor in their state of matter at room temperature b Think about the polarity of bonds and molecules Can you determine a reason why ethanol is a liquid while dimethyl ether is a gas under the same conditions c Using the ideal gas law the definition of density and the relationship moles mass molar mass derive an equation by combining and rearranging terms that relates how gas density varies with temperature What are the units of gas density in this equation At 100oC and 1 0 atm ethanol and dimethyl ether are gases Explain how their densities compare under these conditions and why d Thinking about the characteristics of the three states of matter make a general statement about the factors that affect density for solid s and liquids compared to

How many grams of oxygen gas occupy 12 3 L of space at 109 4 kPa and 15 4 C Show all work and include units for each number Use sig fig rounding on your answer

A balloon starts out with a volume of 1 3 L at 115 3 kPa If the temperature is held constant what would the new volume be if the pressure inside the balloon was reduced to 58 kPa Show all work and include units for each number Use sig fig rounding on your answer

Two bulbs are connected by a stopcock The large bulb with a volume of 6 00 L contains nitric oxide at a pressure of 0 750 atm and the small bulb with a volume of 1 50 L contains oxygen at a pressure of 2 50 atm The temperature at the beginning and the end of the experiment is 22 C After the stopcock is opened the gases mix and react 2NO g O g 2 NO g Which gases are present at the end of the experiment NO 0 NO NO What are the partial pressures of the gases If the gas was consumed completely put 0 for the answer PNO 0 at

Container A holds 782 mL of an ideal gas at 2 40 atm Container B holds 124 mL of a different ideal gas at 4 70 atm If the gases are allowed to mix together what is the resulting pressure P atm A

O g effuses at a rate that is rate 0 rate times that of Xe g under the same conditions

The pressure inside a container that holds volume constant is 0 85 atm at 25 C If the pressure is dropped to 0 43 atm what will the new temperature be Celcius Show all work and include units for each number Use sig fig rounding on your answer

An open flask sitting in a lab refrigerator looks empty but it is actually filled with a mixture of gases called air If the flask volume is 1 50 L and the air is at standard temperature and pressure how many gaseous molecules does the flask contain number of gaseous molecules

A flexible container at an initial volume of 5 12 L contains 5 51 mol of gas More gas is then added to the container until it reaches a final volume of 17 1 L Assuming the pressure and temperature of the gas remain constant calculate the number moles of gas added to the container number of moles of gas mol

equation to fill in the blanks of the table A B C D E C3H8 50 3 CO 4H O Tap on a table cell to enter or edit its value moles of moles of moles of moles of C3H8 0 CO H O 1 0 3 0 4 2 10 0 Color Coding Key 2 0 10 0 14 Tap

A sample of an ideal gas at 1 00 atm and a volume of 1 42 L was placed in a weighted balloon and dropped into the ocean As the sample descended the water pressure compressed the balloon and reduced its volume When the pressure had increased to 10 0 atm what was the volume of the sample Assume that the temperature was held constant A V L

If 3 39 mol of an ideal gas has a pressure of 2 71 atm and a volume of 67 31 L what is the temperature of the sample in degrees Celsius T

Dalton s law of partial pressure is P nRT True False

49 8 1 00 P atm 0 00150 54 4 54 8 is a O2 is a On is a 90 2 154 6 T Kelvin At a pressure of 1 atm the temperature 54 8 K is called the The normal boiling point for O2 is at K The triple point pressure for O2 is atm The critical pressure for O is 49 8 atm At temperatures above 154 6 K and pressures above 49 8 atm O is at 25 2 atm and 45 9 K at 1 50x10 3 atm and 98 8 K at 1 00 atm and 80 4 K of 02

If the kelvin temperature of a gas is doubled the volume is doubled provided that the pressure and the number of particles remains constant True False

In the illustration N is color coded as blue 8 What kind of change is represented by this illustration Is energy absorbed or released when this change occurs

1 point number of moles of CO2 is needed to fill an 76 L tank to a pressure of 23 atm at 298 Kelvin

Write a balanced half reaction for the reduction of gaseous oxygen O to aqueous hydrogen peroxide H O in acidic aqueous solution Be sure to add physical state symbols where appropriate M

a STP 1 00 atm and 0 c M V 1 Y b What volume would the propane occupy at STP V 250 ML 0 25 L 1000 P V 21 2 T 7 2 3 20 250 T 57 C 273 1 330 1k P 1320 4 0 25 moles ROST UZ 0 84 2 94101 The can says that exposure to temperatures above 57C may cause the can to burst What is the pressure in the can at this temperature P nRT T MRT P 0 25 330 1 1320 4 0 25 330 1 2 0 a 330 1 330 1 3 1 atm

If I have 22 9 moles of a gas at a pressure of 12 4 atm and a volume of 24 liters what is the temperature Type your answer

Arrange the bonds from the least polar to the most polar bond N O Ca O Si O S 0 0 0 Enter a number from 1 to 5 to order each bond from least to most polar 1 being least polar 5 being most polar N O Ca 0 Si O S O 0 0

Consider these reactions Reaction 1 H g Cl g 2HCl g Reaction 2 20F g O g 2 F g Reaction 3 N g 2O g 2NO 9 Use Reaction 1 AH 184 6 kJ AH 49 4 kJ AH 66 4 kJ Determine the mass in grams of chlorine gas consumed with excess H when 1 861 0 kJ of energy is released from the system Answer g mass must be positive round to nearest whole number

In order for the Ideal Gas Law to be used, which units must be used in calculations? (select all that apply, wrong choices will be penalized) Amount of gas must be expressed in moles Temperature must be expressed in K Volume must be expressed in mL Pressure must be expressed in Pascal Volume must be expressed in L Amount of gas must be expressed in grams Pressure must be expressed in atm Temperature must be expressed in °C

How many liters of pure oxygen gas, measured at STP, are required for the complete reaction with 4.83 L of C4H10. 2 C4H10(g) + 13 O₂(g) → 8 CO₂(g) + 10 H₂O(g) Keep the answer with 2 decimal places. Do not write unit in answer.

Calculate the volume (in L) occupied by 0.766 mol of nitrogen gas at a pressure of 1.06 atm and a temperature of 311.70 K Keep the answer with 2 decimal places. Do not write unit in answer.

A gas has a volume of 3.83 L at 31.96 °C. What will the volume (in L) of the gas be if its temperature is raised to 81.83 °C while its pressure is kept constant? Keep the answer with 2 decimal places. Do not write unit in answer.

A sample of gas has a volume of 840.6 mL and a pressure of 425.7 torr. What volume (in mL) will the gas occupy at 743.8 torr if the temperature of the gas doesn't change? Keep the answer with 1 decimal place. Do not write unit in answer.