General Questions and Answers

will be applied to the motorcycle during the collision 1 pt 7 Which of Newton s Laws best explains your answer to 6 1 pt 8 Calculate the acceleration of the motorcycle using Newton s 2nd Law a F m 3 pts Givens Answer sycle with the force you calculated in question 1 what force Givens Work 9 Calculate the deceleration of the Self Driving Car Sedan using Newton s 2nd Law 3 pts Work

1 2 O 4 Question 4 1 point 1 Listen Name the following oxides of nitrogen in this sequence NO N O NO2 N2O4 nitrogen monoxide dinitrogen monoxide nitrogen dioxide dinitrogen tetroxide nitrox dinitrox nitridiox dinitritriox mononitrogen monoxide dinitrogen monoxide mononitrogen dioxide dinitrogen tetraoxide O nitrogen oxide nitrogen II oxide nitrogen oxide II nitrogen II oxide IV

For the reaction C s CO g 2CO g Kp 1 35 at some temperature If this reaction at equilibrium has a total pressure of 8 58 atm determine the partial pressures of CO2 and CO in the reaction container Partial pressure of CO2 Partial pressure of CO E atm atm

At a particular temperature Kp 1 40 x 102 for the reaction H g I2 9 2HI g If 3 83 atm of H 9 and 3 83 atm of I2 g are introduced into a 1 00 L container calculate the equilibrium partial pressures of all spec Partial pressure of H atm Partial pressure of 12 Partial pressure of HI atm atm

Problem 1 A runner accelerates to 4 2 m s for 10 seconds before winning the race How far did he she run Problem 2 A plane starts from rest and accelerates uniformly over a time of 20 s for a distance of 300 m Determine the plane s acceleration Problem 3 A ball free falls from the top of the roof for 5 seconds How far did it fall What is its final

It is desired to produce 4 26 grams of iron III chloride by the followin reaction If the percent yield of iron III chloride is 65 9 how many grams of chlorine gas would need to be reacted grams chlorine gas iron s chlorine g iron III chloride s

Which substances cannot be broken down by chemical change C CO2 Cu CuO

Percent composition of all elements in th compound NaNO3

Select the total balanced equation for the reaction of HI aq with Sr OH 2 aq 2 H aq 2 OH aq 2 H O l H aq 1 aq Sr2 aq OH aq H O l Sr aq aq 2 H aq 2 1 aq Sr2 aq 2 OH aq 2 H O l Sr2 aq 2 1 aq H aq OH aq H O l O2 Hl aq Sr OH 2 aq Srl aq 2 H O l

By how much had the concentrations changed when the reaction reached equilibrium The concentration of PCI3 has decreased by 195 M The concentration of Cl has decreased by The concentration of PCIs has increased by X Incorrect What were the equilibrium concentrations The equilibrium concentration of PCI3 The equilibrium concentration of Cl The equilibrium concentration of PCls X Incorrect 195 195 i 197 i 124 i 120 M M M M M

Experimental data for the reaction A2B C have been plotted in the following three different ways with concentration units in mol L JAJ 0 05 0 04 0 03 0 02 0 01 0 0 2 4 Time s In A 5 mol L 10 mol l 3 0 3 5 4 0 4 5 5 0 0 2 4 Time s a What is the order of the reaction with respect to A Order b What is the initial concentration of A 0 001 mol L O 0 05 mol L O 0 1 mol L 1 A 100 80 20 0 0 4 2 Time s

During an experiment 0 288 mol of H and 0 288 mol of 12 were placed into a 1 75 liter vessel where the reaction H g 12 g 2HI g came to equilibrium For this reaction Kc 49 5 at the temperature of the experiment What were the equilibrium concentrations of H I2 and HI X Incorrect H i 0 165 X Incorrect 1 i 0 165 M M

Your answer is partially correct Consider the equilibrium PCI 5 g 4H O g H3PO4 1 5HCI g How will the amount of H3PO4 at equilibrium be affected by decreasing the volume of the container holding the reaction mixture Only the gases N will be affected by the volume of the container 1 But the stoichiometric ratio of the reactants to products is i moles of gas will not 10 so as the volume is changed the number of change and there will be no change in the amount of H3PO4 Que Mul QL Mu Q M

Consider the following equilibrium N O4 g 2NO 8 AG 5 4 kJ Now suppose a reaction vessel is filled with 3 30 atm of dinitrogen tetroxide N 04 at 157 C Answer the following questions about this system Under these conditions will the pressure of N O4 tend to rise or fall Is it possible to reverse this tendency by adding NO In other words if you said the pressure of N O4 will tend to rise can that be changed to a tendency to fall by adding NO Similarly if you said the pressure of N O4 will tend to fall can that be changed to a tendency to rise by adding NO If you said the tendency can be reversed in the second question calculate the minimum pressure of NO2 needed to reverse it rise fall 0 yes Ono atm X k

The reaction N O4 g 2NO g has a Kp 0 140 at 25 C In a reaction vessel containing the gases in equilibrium at that temperature the partial pressure of N O4 was 0 265 atm a What was the partial pressure of NO in the reaction mixture pressure of NO i atm b What was the total pressure of the mixture of gases N C N C 1

At a certain temperature Kc 0 18 for the equilibrium PC13 g Cl g PC15 g If 0 026 mol of PCl5 is placed in a 2 00 L vessel at this temperature what will the concentration of PCI3 be at equilibrium

A solution is made by mixing 30 0 g acetone CH3COCH3 and 39 0 g methanol CH3OH What is the vapor pressure of this solution at 25 C Assume ideal solution and gas behavior At 25 C the vapor pressures of pure ac tone and pure methanol are 271 and 143 torr respectively Vapor pressure torr Mole fraction of acetone What is the composition of the vapor expressed as a mole fraction Mole fraction of methanol

A 348 mL vessel contains NH3 at a pressure of 749 torr and a temperature of 154 C What is the molar concentration of ammonia in the container

Your answer is partially correct Define boiling point and normal boiling point The boiling point is the temperature at which the liquid boils and the vapor pressure of the liquid is atmospheric pressure The normal boiling point is the boiling point of a liquid when the atmospheric pressure is equal to 101 3 mm Hg the prevailing

SUMMER AS t Year 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 Clarity 38 41 35 1998 1999 2000 2001 2002 2003 2004 2005 36 29 28 37 38 19 22 35 14 22 21 23 15 29 36 10 12 11 9 13 2 L A Create a graph for the data set be sure to include all parts of a grad NAME T 5 Expl phosph H MATE T HTT T L TT T TT 10 5 Make a claim that summarizes the data in the graph use evident from the graph to support your rationale

The binding of oxygen by hemoglobin a large complex molecule that is represented with the symbol Hb below in the blood is represented by the equilibrium reaction is below HbH aq O aq HbO aq H aq K 1 8 Alex 22 2 kj mol The maintenance of this equilibrium is incredibly important to the human body 1 3 pts How would this equilibrium be affected if you were running a fever 2 4 pts Given the secondary equilibrium below HbH aq CO aq HbCO aq H aq K 306 calculate the equilibrium constant of the following reaction HbO aq CD aq HbCO aq 0 aq 3 4 pts Given your answer to 2 explain how the introduction of CO into the

A student placed 0 315 mol of PCI3 g and 0 244 mol of Cl g into a 1 00 liter container at 250 C After the reaction PC13 g Cl g PCI g came to equilibrium it was found that the flask contained 0 120 mol of PCI 3 What were the initial concentrations of the reactants and product PC13 M Cl i PCI5 M M By how much had the concentrations changed when the reaction reached equilibrium The concentration of PCI3 has decreased by i M i The concentration of Cl has decreased by The concentration of PCIs has increased by i What were the equilibrium concentrations The equilibrium concentration of PCI3 i The equilibrium concentration of Cl The equilibrium concentration of PCI5 i M What is the uplug of K for this reaction at this temperature M M M M

thesis statement on the topic of global warming A Which energy alternative is best for curtailing global warming B We need to do something about global warming C Using hydrogen as an energy resource could help solve some of the global warming problems D Some people believe that global warming is a hoax

The combustion of ethane C H6 produces carbon dioxide and steam 2 C H6 g 70 g 4 CO g 6H O g How many moles of CO are produced when 5 15 mol of ethane is burned in an excess of oxygen moles of CO

number on your Report Sheet Use the rules that have been described 1 Name the following binary salts of the representative elements a Na P d CaC m NH Br b Na O e Cal n NH4 2S c Na N f CaH i KOH 1 K O o NH4CN r AIN 2 Name the following salts according to the old ic ous system and the Stock system a CrS b Cr O3 c Crl 6H O d CuCl e Cul f CuBr 4H O g Ca3P j K S h KCN k K Te g HgCl h Hg Cl i HgO j Fe O3 k FeS 1 Fel 6H O p AlCl3 q Al2O3 m Coo n CoBr 6H O 0 SnF4 p SnO q Cu 0 r Fe OH 3

The density of sodium chloride is 2 164 g cm 3 What is the molar concentration of NaCl in a 10 8 cm sample of pure NaCl molar concentration i M What is the molar concentration of NaCl in a 25 1 g sample of pure NaCl molar concentration i M

7 Write formulas and name the binary compounds resulting from matching all with all anions in each set Cations K H aq Na Fe Cu Set 1 Name as acids Anions CI S F CN I Cations Co Co Pb Pt4 Ba2 Set 2 Anions p Br 0 F OH Cations Mn Sn NH4 Hg Ce4 Set 3 2 Anions 0 N S Se r

Current Attempt in Pr At 0 00 C hexane C6H14 has a vapor pressure of 45 37 mm Hg Its AHvap is 30 1 kJ mol What is the vapor pressure of hexane at 23 2 C

Glucose C6H 2O6 is used as an energy source by the human body The overall reaction in the body is described by the equatio C6H 2O6 aq 60 g 6CO g 6H O 1 Calculate the number of grams of oxygen required to convert 43 0 g of glucose to CO and H O mass of 0 192 Incorrect Calculate the number of grams of CO produced mass of CO 180 9

6 Write formulas for the following compounds consisting of two nonmetals metalloid and a nonmetal a hydrochloric acid b hydrosulfuric acid c hydroiodic acid d silicon tetrafluoride e arsenic pentafluoride f xenon hexafluoride g iodine pentafluoride h krypton difluoride i tetrasulfur tetranitride j dichlorine heptaoxide k phosphorus trihydride phosphine 1 tetraphosphorus decoxide

Current Attempt in Progress At 20 C the following concentrations were found for the gases in an equilibrium mixture for the reaction 3NO g NO 0 47 M NO 5 0 x 108 M and N O 0 023 M What is the value of Kp for this reaction Enter your answer in scientific notation N O g NO g

Current Attempt in Progress In a particular experiment it was found that when O g and CO g were mixed and allowed to react according to the equation 2CO g O g 2CO g the O concentration had decreased by 0 073 mol L 1 when the reaction reached equilibrium How had the concentrations of CO and CO changed CO decrease ICO increase mol L mol l

3 Name the following binary acids a HF aq b HI aq c H Se aq 4 Name the following binary compounds consisting of two nonmetals or a metalloid and a nonmetal a SO b SO3 c S4N4 d SF6 e SC14 f NO d HBr aq e H Te aq f HCl aq g N O5 j Sic h N S4 k SiO2 i NF3 1 AsCl m AsH3 n AsF5 0 HCI p XeF4 q XeF r XeO3

Benzene has a boiling point of 80 1 C and a specific heat capacity of 1 8 J g C in the liquid phase and 1 92 J g C in the gas phase The AHvaporization of benzene is 30 77 kJ mol How much heat is released when 32 g of benzene in the gas phase is cooled from 101 C to 51 5 C The released heat is i 2417 64 kJ

Select the reactions below that may be elementary processes a 2N O5 2N2O4 O2 b NO O3 NO2 O2 c 2NO H N O H O d C3H8 g 5O2 g 3CO g 4H O g O e C12H22O11 H O C6H12O6 C6H12O6 f 3H N 2NH3 For those not selected explain why they are not elementary processes Equations a b and e are not elementary processes because they have more than two molecules colliding at one time and this is very unlikely O Equations c d and f are not elementary processes because they have more than two molecules colliding at one time and this is very unlikely Equations a b and e are not elementary processes because they have less than two molecules colliding at one time and this is very unlikely Equations c d and f are elementary processes because they have more than two molecules colliding at one time and this is very unlikely

Which of the following orbitals has the lowest energy O 5p 3d 4f 3p 3s Question 34 2 5 points 1 Listen Which figure represents a p orbital Onone of them

Order the steps required to predict the volume in mL of 0 100 M sodium carbonate needed to produce 1 00 g of calcium carbonate There is an excess of calcium chloride Step 1 Convert the volume of sodium carbonate solution required from liters to milliliters Step 2 Compare moles of calcium carbonate to moles of sodium carbonate based on balanced equation to calculate moles of sodium carbonate requ Step 3 Convert mass of calcium carbonate to moles of calcium carbonate Step 4 Compute the volume of sodium carbonate solution required

2 1 01 06 4 Question 12 2 5 points Listen naloge possess Place the following in order of decreasing metallic character P As K

What are the possible values of n and m for an electron in a 4p orbital O n 3 and ml 1 0 1 n 4 and ml 1 On 1 2 3 or 4 and m 1 0 1 On 1 2 3 or 4 and m 1 Question 28 2 5 points 1 Listen Which transition results in emitted light with the shortest wavelength On 5 n 3 On 4 n 3 On 5 On 5 n 2 n 4

equation 5 Fe O3 C Fe CO equation 6 2A1 NO3 3 3H SO4 Al SO4 3 6HNO3

Current Attempt in Progress A 348 mL vessel contains NH3 at a pressure of 749 torr and a temperature of 154 C What is the molar concentration of ammonia in the container

Attempt in Progress How is the half life of a second order reaction affected by the initial reactant concentration It is directly proportional to the initial concentration It is inversely proportional to the initial concentration It has a squared dependence on the initial concentration It is unaffected by the initial concentration

Zinc Copper Magnesium Nickel Magnesium Zinc Cell Potentials of a Zinc Copper Cell at Various Concentrations ZnSO4 aq 1 0 M Cu NO3 2 aq 1 0 M ZnSO4 aq 1 0 M Cu NO3 2 aq 0 10 M ZnSO4 aq 1 0 M Cu NO3 2 aq 0 010 M ZnSO4 aq 1 0 M Cu NO3 2 aq 0 0010 M ZnSO4 aq 1 0 M Cu NO3 2 aq 0 00010 M ZnSO4 aq 0 10 M Cu NO3 2 aq 1 0 M ZnSO4 aq 0 010M Cu NO3 2 aq 1 0 M ZnSO4 aq 0 0010 M Cu NO3 2 aq 1 0 M ZnSO4 aq 0 00010 M Cu NO3 2 aq 1 0 M 09 1 10 V 1 07 V 1 03 V 1 00 V 0 98 V 1 13 V 1 17 V 1 19 V 1 22 V Analyze the data from to your chosen galvanic cell by completing the following questions steps 1 From the data what is the standard cell potential of your galvanic cell How do you know 2 Calculate the ratio of product to reactant electrolyte concentrations for each measurement This product is called the reaction quotient Q Treactant Put these values into a chart similar to Table 1 below ordering your quotient values from least to greatest Note Table 1 shows the start of the table for the Zinc Copper cell If you have chosen a different cell to analyze be sure to adjust your chart accordingly using the appropriate data set In the second column of your chart take the log of each Q value In the final column insert the appropriate cell potential

How many electrons does the 8 12 016 18 10 Question 20 2 5 points Listen Which reaction below represents the electron affinity of Li Li g Lit g e Li g e Li g Li g e Lit g loh possess O Lit g e Li g

greatest energy per photon microwaves ultraviolet O infrared Ovisible light Question 22 2 5 points Listen Which of the following quantum numbers describes the shape of an orbital Oprincipal quantum number angular momentum quantum number magnetic quantum number spin quantum number

The decomposition of ozone O3 is believed to occur by the two step mechanism 03 02 0 slow 0 03 202 fast 203 30 2 net reaction If this is the mechanism what is the reaction s rate law Rate K 0 Rate K 03 O Rate k 0 0 O Rate K 03 O None of these or more informtion is required Rate k 0 03 Rate K 0

How is the half life of a first order reaction affected by the initial reactant concentration It is unaffected by the initial concentration It is directly proportional to the initial concentration It is inversely proportional to the initial concentration It has a squared dependence on the initial concentration

1s 2s 2p63s 3p4 1s 2s 2p63s 3p 1s 2s 2p6 1s 2s 2p63s23p6 Question 14 2 5 points Listen How many valence electrons do the halogens possess 4 02 5

3 4 0 02 1 many Question 38 2 5 points Listen Place the following types of electromagnetic radiation in order of decreasing energy radio waves microwaves infrared light

The reaction of NOBr g to form NO g and Br2 g is second order 2NOBr g 2NO g Br g The rate constant is 0 556 L mol s1 at some temperature If the initial concentration of NOBr in the container is 0 45 M how long will it take for the concentration to decrease to 0 040 M