General Questions and Answers

185 49g of water with 183 79g of carbon dioxide according to the reaction below What volume in liters of oxygen gas would form if the pressure in the reaction vessel at 2atm and the temperature is 100 C Reaction 6CO2 g 6H2O g

Ah atom that has the electron configuration of 1s 2s 2p 3s 3p 4s 3d is classified as A transition element an alkali metal an alkaline earth metal a noble gas

Determine the activation energy from the following data Temperature C 288 318 O 20 4 kJ mole O 2 46 kJ mole O 170 kJ mole 0 512 kJ mole O 47 0 kJ mole k S 1 0 0521 0 332 4

Directions Fill in the blank with the correct word A list of possible answers is provided at the bottom of the page 11 Fire is an example of light that is Visble 12 X rays have a high frequency which allow them to pass through the skin and create images of bones 13 The medium of a transverse wave is at a direction of that wave 14 16 17 18 15 An electron gives off light energy when its position changes to a level same point on the next wave second 20 A is the distance between a point on one wave and the light is located toward the center of the electromagnetic spectru and is the light we see 19 A wave with a long wavelength usually has a large distances in lower created light year low to the are the principle cause of sunburns is the number of wavelengths that pass a point each frequency wavelength is the unit of measurement used when discussing space frequency radio waves right angles visible high transparent ultraviolet rays

18 Name 3 bases that can be found in your house

Circle the stronger acid on each line pH 3 OR pH 5 pH 1 OR pH 1 1 pH 4 OR pH 6 Circle the stronger base on each line pH 12 OR pH 14 pH 10 OR pH 13 pH 8 5 OR pH 9 5

17 Name 3 acids that can be found in your house

12 For the following choose acid or base a Tomato juice pH 5 b pH 7 Las Turns blue litmus paper red c d Lemon juice e Corrodes a nail f Releases hydronium ions in solution g pH of 8 6

26 You are half way through the finall Here is a brain break What the number 1 movie the year Mr Brown was born ans 27 Which of the following Jurassic Park choose this answer b This is not the correct answer d Go back select c intermolecular forces is the strongest alon dipole e London Dispersion 28 Which of the following is a property of water a 7587J c 434 2J a 25 C b Hydrogen Bonding d All of these are equal in strength a High specific heat b Hydrogen Bonding e Amphoteric c 1 4 C Chapter 3 Energy 29 How much energy in is absorbed if a 165g sample of water is heated from 8 degrees C to 19 degrees C Specific heat of water is 4 18 J g C d These are all properties of water b 6207 3J d 1815J bobb 30 What is the final temperature T if 1500J of energy are added to 250g of water initially at 10 degrees C Specific heat of water is 4 18 J g C b 11 4 C d 12 5 C 31 What is the energy value kcal g of a 0 92g food item if it is able to heat 200g of water fo 10 degrees C to 19 degrees C Specific heat of water is 1 00 cal g C b 4 14 kcal g a 3 72 kcal g c 1 96 kcal g d 0 51 kcal g 32 Which of the following is true for an exothermic reaction a Decrease temperature absorb energy b Decrease temperature release energy c Increase temperature absorb energy d Increase temperature release energy 00101 10H enon s

14 Which has the higher concentration of H O pH 4 OR pH 6 pH 3 OR pH 5 pH 1 OR pH 1 1 most to loost acidic Which has the higher concentration of OH pH 12 OR pH 14 pH 8 5 OR pH 9 5 pH 10 OR pH 13

pH Conducts Electricity What color does it turn litmus paper How does it feel How does it taste What ions does it produce in solution Acids Bases

c 2 98g KBr 7 What is the concentration in ppm of a 350g sample of water that contains 0 041 g of D a 117 1 ppm c 1435 ppm b 85 36 ppm d 14 4 ppm

CI 1 F C a C1 6 42 a Bent c Trigonal Planar d 058 CH deriw MB S b Trigonal Pyramidal d Tetrahedral 25 What is the polarity of the molecule pictured in question 24 a Polar c lonic b Nonpolar d None of these b Mere 6 selb

98 9L of carbon dioxide gas at latm and 200 C is reacted with excess water What mass of glucose C6H12O6 would be formed Reaction 6CO2 g 6H O g C6H12O6 1 902 g

7 What two products will H CO3 always decompose to a H C 03 c H CO3 b H O CO fles d H O CO mor bee mal liw

NH4C102 5 A chalice contains 36 45 grams ammonium chlorite in 2 36 liters of solution Calculate molarity

6 Of the listed products which two would indicate that there was no reaction Hint look at the abbreviation in the a H O l Na SO4 aq c KNO3 aq Ba OH s b HCl aq O g d NaOH aq CaCO3 aq 10 Tom 16 8 HO Tom TB S gnifimil s asob

14 In an experiment 2 76g of NaCl were obtained The theoretical value for this reaction had determined that 4 12g of NaCl should have been obtained What is the percent yield of the experimental value a 51 C 33 10 b 154 d 67 alvoelennetal le latot vrie ter blom

22 How many total electrons are present in a triple bond a 2 C 4 b 3 d 6

3 What does a limiting reactant or reagent determine a Amount of product that will form of saoqmasabay b Rate of a reaction c Maximum temperature a reaction can reach d How quickly the products will form e HO s8 ps OW OH lliw aloubong ow 100 8 08 d 00 0H b 08 DH 00 1

03 F3 3 A beaker contains 214 2 grams osmium III fluoride in 0 0673 liters of solution What is t molarity

Chapter 9 Stoichi Use the following balanced equation for questions 8 12 CO 4H CH4 2H O 8 What is the lowest whole number ratio between H and H O a 2 1 C 1 1 b 4 2 d 2 2 a 0 34 mol H O c 0 17 mol H O nya 10 noi 9 How many moles of H O will form if 15g of CO is reacted with Hydrogen gas a 15 75g CH4 c 14 0g CH b 0 68 mol H O d 1 47 mol H O a 0 33g H O c 426 6g H O reaction O HO 10 How many grams of CH will form if 3 5 moles of H react with carbon dioxide 2 b 18 3g CH4 d 0 88g CH4 11 If 23 7g of H are reacted how many grams of H O will form alduob s b 213 3g H O d 106 7g H O 6ES5 norbeen priwollol art yllees 00 10200 enerli ferli b 1 34 mol CH d 067 mol CH ons aboubong owl JerW osen Ispitertioqyri pniwallot erti to bi 08 0A 00 8A 8 A 8A5 DA 08 A b 12 How many moles of CH4 will be produced if 2 67 moles of CO are reacted a 5 34 mol CH4 arti baiell ort ndds orth to lool 3

2 Classify the following reaction Zn CUSO Cu ZnSO4 a Combination or Synthesis c Double Replacement b Decomposition d Single Replacement

4 Which of the following is NOT one of the 7 diatomic molecules HD 688 0 b a Br c Cl b 02 d C d liw Ochi to ameno ynom wor beboe OH

OQ 05 16 A group of students starts with 25 60 grams of Cu OH and adds enough water to make 100 mL of solution a What is the solute b What is the solvent c How many moles of the solute are there d How many liters of the solution are there e What is the molarity of the solution MENTAL RAPS

Choose the statement that is TRUE Valence electrons are most difficult of all electrons to remove Outer electrons efficiently shield one another from nuclear charge Core electrons effectively shield outer electrons from nuclear charge Core electrons are the easiest of all electrons to remove O All of the above are true

in a simple Why is there a difference in the calculated and observed transmission simple photometer that uses a photomultiplier

3 What two products are always produced in a combustion reaction OH TAF B a O CO c H O O b CO H O d CH4 O iw tes autom 6 ti mot kwH3 to

Closing with a statement that shows some things will never be resolved is applied when the writer wants to leave happy feeling in the minds of the readers the writer wants to leave a mysterious feeling in the minds of the readers the writer wants to leave a feeling of satisfaction in the minds of the readers

2 What is the molarity of a solution that contains 4 53 moles of lithium nitrate in 2 85 liter solution M 4 53mo 0 0015 3950

How many moles of O react with 0 75 moles of C10H22

Which of the following is a transition element OU OK O Pr O Sn O Pd

Choose the reaction that illustrates AH f for NaHCO 3 O Na aq HCO3 1 aq NaHCO3 s O Na s 1 2 H g C s 3 2 O2 g NaHCO3 s O Na s 2 H g C s 3 O g NaHCO3 s O Na aq H2O 1 CO2 g NaHCO3 s O Na s H g C s O2 g NaHCO3 s

A balloon is inflated to a volume of 10 0 liters at a pressure of 0 90 atm It is sealed and released in the air It floats up to an altitude where its volume becomes 50 0 liters I 1 What happened to the pressure outside the balloon

NO 8 Br 1 NOBr g Write the expression for the reaction quotient N 1 0 1x2 2 Br 2 N 03 l If the NO 4 0M and the NOBr 8 0M and Keq 22 which way must the reac shift in order to reach equilibrium

QUESTION 14 A sample of Be SO4 weighing 0 23 g was dissolved in water and treated with Ca NO3 2 resulting in the precipitation of 0 50 g CaSO4 What is the Be by mass in Be SO4 is a fill in the blank question after calculation put the answer in the blank CaSO4 s Be NO3 2 aq Be SO4 aq Ca NO3 2 aq

c Reading the buret determine the volume of KMnO that was added during titration Het Amm Pneuma 1 point for stating the correct volume of KMnO d The concentration of KMnO was 0 0235 M calculate the number of moles of MnO ions that completely reacted with the H C O

QUESTION 10 Which of these metals will be oxidized by the ions of cobalt A nickel B tin C iron D copper E silver

QUESTION 20 Given the following reactions AH 66 4 kJ N2 g 202 g 2NO2 g 2NO g O2 g 2NO2 g AH 114 2 kJ the enthalpy of the reaction of the nitrogen to produce nitric oxide 2NO g N2 g O2 g kJ L is A 180 6 B 47 8 C 47 8 D 90 3 F 180 6

What is the new mass volume percent m v of a KOH solution that is prepared by diluting 110 mL of a 3 0 m v KOH solution to 330 mL 02 0 m v 01 0 m v 12 m v 6 0 m v 18 m v

QUESTION 17 The value of AH for the reaction below is 72 kJ 80 9 grams of HBr is formed in this reaction H2 g Br2 g 2HBr g A 144 B 72 C 0 44 D 36 F 72 kJ of heat are released when

QUESTION 7 In which species does sulfur have the highest oxidation number A S8 elemental form of sulfur B H2S C SO2 D CS2 SO4 E H2SO3

solution into a flask with KMnO solution The balanced equation for this titration reaction is below use it to answer the following questions 6 H aq 2 MnO4 aq 5 H C O4 aq 10 CO g 8 H 0 1 2 Mn aq a Identify what has been reduced in the titration reaction b Justify your answer with oxidation numbers

Phosphorus and bromine react violently to form PBr3 a If 5 g of phosphorus and 35 g of Br2 react what is the limiting reactant 2P 3Br 2PBr3 Sapimol p 2 mol PBr3 270 695 9 Pers Imal PBT3 30 973 P 2 mol P 43 69 44g PBT3 9 Br 36g Br 1 mol Br 2 mol PBr3 59 270 1159 808 3 mol mol b How many grams of PBr3 will be produced Stoi 2P 3Br 2 PBrz c If the actual yield of Pbr3 is 30 0 g what is the percent yield

In which species does sulfur have the highest oxidation number A S8 elemental form of sulfur B H2S C SO2 D CS2 SO4 E H2SO3

Graph the following Data for the Group 1 elements This will help us understand how atomic radius ionization energy and electronegativity change down a group and see what the trends are You will need to make three separate graphs One for atomic radius one for lonization Energy and one for Electronegativity Make the x axis the atomic numbers of the elements and the y axis the data from the chart Make sure you give each chart a title and label the axis Symbol H Li Na K Rb Cs Atomic Radius Picometers 31 128 166 203 220 244 First lonization kilojoules mole 1312 520 496 410 403 376 Electronegativity 4 point scale 2 1 1 0 0 9 0 8 0 8 07

Find the mass of glucose Stoi required to produce 24 8 g of carbon dioxide C6H1206 0 CO H O 602

1 point How many mL of water is added to dilute a 10 mL of 0 4 M solution to a new concentration of 0 1 M O 40 O 30 20 10

1 point Which of the following elements is the least reactive O Li atomic number 3 O Cl atomic number 17 O Kr atomic number 36 Au atomic number 79

Be sure to answer all parts How many milliliters of a 4 3 M glucose solution contains each of the following number of mol a 0 39 mol mL b 0 0041 mol mL