Classification of Elements and Periodicity Questions and Answers
Inorganic Chemistry
Classification of Elements and PeriodicityThe following set of data was obtained by the method of initial rates for the reaction H3C 3CBr OH H3C 3COH Br What is the value of the rate constant k H3C 3CBr M OH M Initial Rate M s 0 25 0 25 1 1 10 4 0 50 0 25 0 50 0 50 1 8 10 4 5 1 none of these 4 4 x 10 4 S 1 8 8 x 10 4 5 1 2 2 10 4 2 2 x 10 4
Inorganic Chemistry
Classification of Elements and PeriodicityIn which of the following series are the diatomic molecules arranged in the order of increasing bond length OF2 Cl ICI BrCl 12 OF2 Cl BrCl ICI 12 OF2 BrCl Cl I2 ICI OF2 Cl2 BrCl 12 ICI Fo IC BrCL Cla la
Inorganic Chemistry
Classification of Elements and PeriodicityEach of the following pairs contains one strong acid and one weak acid except O HNO3 and H CO3 O HF and HOCI O H SO4 and H S O CH3COOH and HCI H PO and HRr
Inorganic Chemistry
Classification of Elements and Periodicity2 How is activation energy similar to an uphill climb in a ski slope 3 What type of biological molecules are enzymes
Inorganic Chemistry
Classification of Elements and PeriodicityWhen lipid bilayers are disrupted they are able to spontaneously reseal Why
Inorganic Chemistry
Classification of Elements and Periodicity2 What effect does changing temperature and pH have on enzyme activity
Inorganic Chemistry
Classification of Elements and PeriodicityWhat happens to the shape of an enzyme when it is exposed to unfavorable temperature and pH
Inorganic Chemistry
Classification of Elements and PeriodicityA 2 5 L sample of unknown gas has a mass of 12 0 g and a pressure of 1 5 atm at 35 0 C What is the identity of the unknown gas Ohydrogen gas O hydrogen bromide O carbon monoxide Ochlorine gas
Inorganic Chemistry
Classification of Elements and PeriodicityExplain how lipids make a cell membrane impenetrable to ionic and polar substances
Inorganic Chemistry
Classification of Elements and Periodicity10 Name the enzyme that catalyzes the following reaction LACTOSE 89 WATER 1 name of enzyme G G
Inorganic Chemistry
Classification of Elements and Periodicity8 Which gland secretes enzymes into small intestine 9 Give one example of commercial use of enzyme
Inorganic Chemistry
Classification of Elements and PeriodicityFill in the blank Ethanol can readily be prepared from a reaction between water and in the presence of a small amount of sulfuric acid Oglucose O sucrose O ethanal O ethane
Inorganic Chemistry
Classification of Elements and PeriodicityWhat is the function of proteins in the cell membrane
Inorganic Chemistry
Classification of Elements and Periodicity160 5 mol of an ideal gas is at 1 47 atm at 47 70 C what is the volume of the ga
Inorganic Chemistry
Classification of Elements and Periodicity3 What would you expect to see if catalase that has been exposed to suboptimal conditions is placed with hydrogen peroxide
Inorganic Chemistry
Classification of Elements and PeriodicityFor each of the following statements determine if it describes nuclear fission nuclear fusion or both 15 takes place in stars 16 used for energy via nuclear power plants 17 unstable atomic nuclei become more stable via this reaction 18 involves a larger nuclei breaking into smaller particles A Fission O O O O B Fusion O O O C Both Fission Fusion O O O O
Inorganic Chemistry
Classification of Elements and Periodicity1 When you place catalase with hydrogen peroxide what do you expect to see
Inorganic Chemistry
Classification of Elements and Periodicity4 What is an enzyme substrate complex 5 In which system of our body do enzymes work outside cells
Inorganic Chemistry
Classification of Elements and Periodicity6 Two compounds of nitrogen nitrogen tetroxide N O and hydrazine N H4 are used as rocket fuels When the two compounds are mixed they ignite spontaneously and produce nitrogen gas and water Balance the following equation for the reaction III a N O4 1 N g H O g b If 8 00 g nitrogen tetroxide and 4 00 g hydrazine are mixed determine the following quantities 1 limiting reactant N H 1 2 mass of product N 3 mass of excess reactant
Inorganic Chemistry
Classification of Elements and Periodicity32 Identify the missing particle X in the following nuclear reaction 23994Pu 4 He X OA 235 6Cm B 24392 Cm C 24392U OD 23592U OE None of the above
Inorganic Chemistry
Classification of Elements and PeriodicityHow does increasing surface area of the reactants affect the rate of a reaction increases reaction rate O does not affect reaction rate decreases reaction rate not enough information provided to answer
Inorganic Chemistry
Classification of Elements and PeriodicityUse the standard enthalpies of formation to calculate the AH in kJ mol of isopropanol combustion 2 C3H8O 1 9 O g 6 CO g 8 H O g AH kJ mol 318 1 Formula Bromine Br g Br HBr g Calcium Ca s CaO s CaCO3 s Carbon C s graphite C s diamond CO g CO g CH g CH OH C H g C H4 g C H6 g C H5OH C3H g C3H6O I acetone AH kJ mol 111 9 0 36 3 0 634 9 1207 6 0 1 88 110 5 393 5 74 6 238 6 227 4 52 4 84 68 277 6 103 85 248 4 Formula C3H8O I isopropanol C6H6 C6H12O6 s glucose C12H22011 s sucrose Chlorine Cl g Cl g HCI g Fluorine F g F g HF g Hydrogen H g H g Nitrogen N g NH3 g NH4NO3 s NO g N O g 49 1 1273 3 2226 1 121 3 0 92 3 79 38 0 273 3 218 0 0 0 45 9 365 6 91 3 81 6 Formula Oxygen O g 03 g H O g H O Silver Ag s AgCl s Sodium Na s Na g NaCl s Na CO3 s NaHCO3 s Sulfur Sg s rhombic Sg s monoclinic SO g SO g H SO4 1 AH kJ mol 0 142 7 241 8 285 8 127 0 0 107 5 411 2 1130 7 950 8 0 0 3 296 8 395 7 814 0
Inorganic Chemistry
Classification of Elements and Periodicity35 In what way is 14C nucleus changed to 14N nucleus by this decay 14Cle 14N A In the above reaction a proton is converted to a neutron B In the above reaction a neutron is converted to a proton O C In the above reaction a positron is converted to an alpha particle D There is no change in the nucleus because the mass remains 14 E None of the above is true
Inorganic Chemistry
Classification of Elements and PeriodicityWater Which would be best for thermally insulating not transferring heat Glass Substance Elements Lead Gold Silver Copper Iron Aluminum Compounds Ethanol Water Materials Glass Pyrex Granite Sand At 298 K Specific Heat Capacity Cs J g C 0 128 0 128 0 235 0 385 0 449 0 903 2 42 4 18 0 75 0 79 0 84
Inorganic Chemistry
Classification of Elements and PeriodicityGive the expression for the Ksp for the following Ksp O A Ca 2 CO32 CaCO3 B CaCO3 Ca CO3 O C CaCO3 OD Ca CO3 CaCO3 s Ca 2 CC
Inorganic Chemistry
Classification of Elements and Periodicity135 kJ of energy is applied to a 20 0 kg iron bar at 19 8 C What temperature in C will it heat to
Inorganic Chemistry
Classification of Elements and Periodicityle The density of aluminum 15 3 2 70 g cm what is mass of a piece of aluminum w volume of 1 50 cm 4 20 4 05 0 556 an
Inorganic Chemistry
Classification of Elements and Periodicityto acc ess important values if How many protons neutrons and electrons are there in a neutral atom of the isotope of gallium named gallium 65 protons neutrons electrons
Inorganic Chemistry
Classification of Elements and PeriodicityFor each bond show the direction of polarity by selecting the correct partial ch 8 Si s CI S Cl Si 8 O O The most polar bond is blome Varian ante remaining
Inorganic Chemistry
Classification of Elements and PeriodicityHow many moles of Mn are there in 107 grams of Mn moles
Inorganic Chemistry
Classification of Elements and PeriodicityAnswer the following questions Show your calculations clearly where applicable 1 Arrange the following substances in order of increasing boiling point bp 4 pts a CH3CH OH b SO2 c CH OH highest bp Lowest bp
Inorganic Chemistry
Classification of Elements and PeriodicityGenerally the higher degree of unsaturation of a fatty acid the lower the melting point Explain why this is the case
Inorganic Chemistry
Classification of Elements and PeriodicityA gas occupies 25 7 L at 2 00 atm pressure and 27 C How many moles of gas are present in the sample O 23 2 mol O 1 04 mol O 2 09 mol O 3 59 mol O 4 49 mol
Inorganic Chemistry
Classification of Elements and PeriodicityIs the change represented by the following illustration best categorized as a chemical change or a physical chang In the illustration H is color coded as white and O is color coded as red C 8 8
Inorganic Chemistry
Classification of Elements and Periodicitywill take more energy to melt a gram of ice than to melt a gram of solid iodine O True O False Question 17 Which of the following has the lowest vapor pressure O H O NaCl O NH3 respectively It 1 pts
Inorganic Chemistry
Classification of Elements and PeriodicityThe total mass of a solution is 178 7 g The solvent mass is 125 2 g What is the mass percent of the solute O 70 1 O 40 9 O 29 9 O 20 1 O Not enough information is given
Inorganic Chemistry
Classification of Elements and Periodicity4 Both of the following reactions are saponifications Does that mean that the product in each case is soap Explain CH CH C OCH3 NaOH OCH O CH CH 16 C OCH NaOH CH CH C ONa CH OH ONa C ONa CH CH 6C ONa CH OH
Inorganic Chemistry
Classification of Elements and Periodicity7 Discuss the fluid mosaic model of membranes Explain why the percentages of protein lipid and carbohydrate vary depending upon the type of membrane
Inorganic Chemistry
Classification of Elements and PeriodicityWhat does the term amphipathic mean Design some molecules that would act like soap but will not form insoluble salts in hard water
Inorganic Chemistry
Classification of Elements and Periodicitya catalyst support in acidi 22 which one of the following can not used as a medium Calcium carbonate Al2O3 Zedite Silica
Inorganic Chemistry
Classification of Elements and PeriodicityWrite an appropriate discussion for this experiment Include a discussion about the similari ties and differences between the reactions when early representative metals Group 1 Group 2 or zinc react with water and HCl How does the activity series for metals related to your results in this experiment Why is it possible to use the acid base titration to determine the chemical formula of the product formed when calcium reacts with water
Inorganic Chemistry
Classification of Elements and Periodicityfor what value of 2 the Magnese Ion have value of magnetic moment UB is zero mot
Inorganic Chemistry
Classification of Elements and PeriodicityIce bag therapy is used by sports trainers to treat muscle injuries If 118 grams of ice are placed in an ice bag how much heat in kilojoules will be absorbed to melt all the ice at 0 Celsius Hint the answer choice is either positive or negative depending on if the energy is absorbed or released The heat of fusion for ice is 334 joules per gram O a 39 4 kJ O b 30 5 kJ O c 31 9 kJ O d 33 7 kJ O e 32 4 kJ
Inorganic Chemistry
Classification of Elements and PeriodicityExplain why primary standard sodium carbonate should be weighed by difference from the weighing bottle
Inorganic Chemistry
Classification of Elements and PeriodicityTwo beakers are filled with different liquids A steel ball is dropped simultaneously into each beaker 1 1 I 1 I 1 C Drag the slider to see what happens The stopwatch shows the time since the balls were dropped Liquid A Liquid B Note the liquids have the same density What s different about liquids A and B Your answer should be the one or two word name of a physical property S
Inorganic Chemistry
Classification of Elements and PeriodicityThe end product of the humoral immune response is O Increased pathogen numbers Activated cytotoxic T cells O Antibody production
Inorganic Chemistry
Classification of Elements and PeriodicitySodium Hydroxide Solution NaOH www Metal Cation Ca Zn Pb Cu Cr3 Fe Fo3 Observation must include ionic equation that represents the observed reaction
Inorganic Chemistry
Classification of Elements and PeriodicityOn hot days you may have noticed that potato chip bags seem to inflate even though they have not been opened If I have a 450 mL bag at a temperature of 20 0 C and I leave it in my car which has a temperature of 50 0 C what will the new volume of the bag be
Inorganic Chemistry
Classification of Elements and Periodicityof the following describes the element He se all that apply reacts vigorously with alkali metals to form salts is one of the group of the least reactive elements consists of diatomic molecules in elemental form is very reactive as a metal forms a basic solution in water belongs to a group consisting entirely of gases mit Answer Retry Entire Group 6 more group attempts r
Inorganic Chemistry
Classification of Elements and PeriodicityErwin Schr dinger Orbitals which result from solving the Schr dinger wave equation can be represented by electro pictures Match the orbitals below with their kind and identify their shapes Put letters in alphabetical order If none are correct leave the box blank A 1 s orbital 2 p orbital 3 d orbital B s orbitals have a p orbitals have a d orbitals have a C shape shape shape D