Chemistry in Daily Life Questions and Answers

maroon jordan 1 Google Search Jordan 1 Retro High Light Smok Blackboard Texas Tech Unive References Use the References to access important values if needed for this question Experiment 8 Sp A 0 698 mol sample of Xe gas is confined in a 17 4 liter container at 30 6 C If the temperature of the gas sample is decreased to 11 3 C holding the volume constant the pressure will decrease because Choose all that apply With lower average speeds on average the molecules hit the walls of the container with less force At lower temperatures molecules have lower average speeds As the number of molecule wall collisions increases the force per collision decreases With higher average speeds the molecules hit the walls of the container more often

Ammonium perchlorate NH4CIO4 is the solid rocket fuel used by the U S Space Shuttle It reacts with itself to produce nitrogen gas N chlorine gas C1 oxygen gas O water H O and a great deal of energy What mass of oxygen gas is produced by the reaction of 2 37 g of ammonium perchlorate Round your answer to 3 significant digits

A 0 20 mol L solution of Ca PO4 2 completely dissociates in water What is the resulting concentration of anions in solution O 0 20 mol L 0 40 mol L O 0 60 mol L O 0 80 mol L 1 0 mol L

Which temperature range is the danger zone for food storage OA 0 F to 32 F OB 32 F to 145 F

CH3 H C CH CH CH CH3 OH H3C CH CH CH CH3 CH3 H3C

For each chemical reaction in the table below decide whether the highlighted reactant is a Br nsted Lowry acid a Br nsted Lowry base or neither reaction NH3 aq H O 1 NH aq OH aq NH aq H O NH aq H O aq HI aq H O I aq H O aq I aq H O 1 HI aq OH aq highlighted reactant Bronsted Lowry Bronsted Lowry acid base O O O neither O O

If a base represented as B reacts with the most acidic proton on the given compound where is the proper location for the end of the curved arrow shown Select the correct circled position for the terminus of the arrow Ho d a Br b a CH3 H B

Pick the IUPAC name for the following compound HO X O 3 methyl 3 4 epoxypentan 1 ol O 5 hydroxy 3 methyl 2 3 epoxypentane O 1 2 hydroxyethyl 1 2 dimethyloxirane O 3 4 epoxy 3 methylpentan 1 ol

When hydrogen gas is passed over solid stannous oxide the following reaction occurs SnO2 s H g 2 H O g Sn s If the system is stressed by adding additional Sn the system will respond by Select If the system is stressed by adding additional H the system will respond by Select

15 Trina is a sales agent comparing properties for a client who wants to sell his property Where would Trina look for comparable properties a a home in another county b a home 20 miles away c a home in close proximity d a home in another city

8 C H4 3 0 2 CO2 2H O 9 2 KClO3 2 KCl 3 02 10 Pb NO3 2 2 NaCl 2 NaNO3 PbCl2 Type of Reaction Type of Reaction Type of Reaction Oxygen 11 What type of reaction is shown to the left Carbon 8 8 80 12 Using the key provided write the complete chemical formula shown in the box above 13 Now balance the equation above so that both sides of the reaction are equal 27 W 28 29

7 38 Balance each of the following chemical equations a Ca s Br2 1 CaBr2 s b P4 s O g P4O10 s c Sb S3 s HCl aq SbCl3 aq H S 9 d Fe O3 s C s Fe s CO g

If Kc for the reaction 4HCI g O2 2Cl2 g 2H2O g is 135 calculate Kc for the reaction Cl2 g H O g 2HCl g 1 2O2 g There are four decimals in th answer

How do the CONCENTRATIONS of reactant and product compare in an equilibrium reaction equal concentrations of reactant and product are present in all equilibrium reactions only reactant is present in all equilibrium reactions only product is present in all equilibrium reactions some product and some reactant is present in all equilibrium reactions

HO HO Reactants H 2 Opia 2 H O g Products HO 00

If a scientist has 15 72mol of aluminum oxide Al2O3 What mass of aluminum oxide in grams do they have

2 3 The fossils of swamp plants and animals have been found in desert rocks What is the best explanation for this A B C D Which term is used to describe all disease causing microorganisms bacteria A The climate in the area was once very different The animals migrated from a swamp into the desert The desert changed into a swamp due to continental drift The plants and animals died out after a drought B pathogens C parasites viruses UD spreads widley Measles is a disease caused by a virus Which is the most effective way to keep measles from spreading A B C D giving antiviral medicines to people who have measles having healthy people wash their hands often giving antibiotics to people who have measles vaccinating healthy people against measles

Select one Dg 81 Nuclear Change 1 Question 7 Huge amount of energy is being produced in the core of a hot star due to 81 O O O O Gravitational pressure Radioactive decay Fusion reactions Fission reactions

3 What is percentage concentration of solution if in 600 ml of the water are dissolved 32 5 g of solid Fe NO2 3

What can be done to reduce your carbon footprint and why is reducing it important

hy are solids and liquids not included i e equilibrium expression

d 14 28 4 What is the ratio of a Potassium K atoms to oxygen O atoms in the ionic compound K 0 5 In a Chemistry lab the directions might say pipette 1 10 of the 250 ml solution into another beaker Show the expression needed to calculate how much solution to transfer to the second beaker 6 Use cross multiplication to determine if the two fractions are equal 15 34 72 170 7 Solve for x in the following proportion 3 x 19 38

b c d 1 3 marks Provide Names for the following alkanes Y 4 t Date

fil Perte Clobod Home lepert Draw Fort Design Layout Calibri Body 11 A A A A EN BIU X A A Ingen d txonet Wad Owenty Type here to search O covalent compound O ionic compound O References Malings Review View Help O P Paracy of 15 P 16 N a compound between two metals ABCD Ascene AaBbCc Asbbcct No 1 No Spa Howling Heading 2 Stylos Electron Proton SUN Pried place Salact A iers Stor Dietate d Share Da Serstely Editor Voke Serately G 34417 2011 06

C H 50 20 0g C H 1 mole C H 0 455 moles C H 8 8 44 0g C H 3CO 4H O 0 455 moles C H Copy link How many water molecules are formed every time 1 molecule of propane reacts 2 MULTIPLE CHOICE QUESTION 3

Use a drawing to show how nuclear fission nuclear fusion and radioactive decay are different from each other Include an explanation with words with your drawing

When a large unstable nuclei split apart what happens Larger Nuclei are formed O Different Elements are Formd A chemical reaction occurs Nuclear Fusion Occurs None of these

Use the reaction below to answer the question PC15 9 PC13 g Cl g AH 67kJ mol If the reaction is at equilibrium and a scientist adds more Cl to the reaction what will happen O More PCI5 will be produced O The reaction will shift left O There will be less PC 3 O All of these answers are correct The amount of reactants will increase and the amount of products will decrease

Dimensional Analysis 1 Unit Conversions Question 2 Complete the conversion indicated in the image 1 meter 3 28 feet and 60 seconds 1 minute Round up to two decimal places when necessary 5 05 7 meters second to feet minute

Four function calculator allowed David Perez Dimensional Analysis 1 Unit Conversions Question 9 An average heart rate is 60 beats per minute How many beats is this per hour A student solves this problem with the work shown in the image Which choice below shows all the corrections needed Select one O heat 3600 seconds 3600 beats 60 beats minute 10 hr 60 minutes 3600 beats hr

1 List the metals from strongest to weakest reducing agent Mg Cu Pb Zn

QUESTION 9 Of the following elements potassium cobalt nitrogen aluminum gold A nitrogen B fluorine C potassium D aluminum is the most easily oxidized Use the Activity Series

The red colored blocks indicate the IA NA Mo 8 VB VB VB VIB VIB 18 118 Sc Ti V Ro Ac Ba Ls Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po A alkali metals A IVA VA VIA VIA VILA B alkaline metals C noble gases Mn Fe Co Ni Cu Zn Ga Ge As Se Dy Ho Er Tm Yb Lu Ce Pr Nd Pm Sm Eu Gd Tb Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr

Question 10 Sodium atoms potassium atoms and cesium atoms all have the same atomic radius first ionization energy total number of protons oxidation state

f the volume in a container at 2 5 atm is 4 0 L what is the volume if the pressure is ncreased to 3 5 atm 2 9 L 4 0 L 2 2 L 561

Which of the following instruments directly measures the pressure of a gas polarimeter spectrometer manometer gas chromatograph None of these measures pressure

The normal boiling point occurs when the O temperature of the pure liquid equals the external temperature O vapor pressure of the liquid equals an external pressure of 10 atmospheres intermolecular forces within the liquid phase are broken O vapor pressure of a pure liquid equals an external pressure of one atmosphere

Which statement about real gases is true The mass of the gas particles is zero The behavior of real gases can be exactly predicted using the ideal gas law The volume of the gas particles is zero None of these Forces of attraction and repulsion exist between gas particles at close range

Find AH for CaCO3 s CaO s CO2 g given 2 Ca s 02 g 2 CaO s 1269 8 kJ AH Ca s CO2 g 1 2 02 g CaCO3 s AH 826 5 kJ

Solutions of Cu Mg2 Zn2 and Pb2 ions and the corresponding metal solids Cu Mg Zn and Pb Your goal is to order Cu Mg Zn and Pb from strongest to weakest reducing agent

11 12 13 14 15 One two tree All de same Black white brown All de same All de same 16 17 18 Read the passage from Sugar Changed the World Vith their victory the people of Saint Domingue announced that the conflict between freedom and roperty was over All men are equal meant that no men are property This idea terrified the English and not merely because their sugar island of Jamaica was just over a hundred miles across the water from Saint Domingue Indeed slaves in Jamaica were beginning to sing a new song while they worked 19 One two tree All de same That chant did more than threaten a slave revolt it was TIME REMAINING 01 16 49 How do the authors use historical evidence to support their claim Select two options They use a secondary source to show that the British secretary of war opposed involuntary servitude They use a primary source to show that a song was spreading the idea of equality across the Caribbean They use a secondary source to show that the idea of an enslaved people s revolt was groundbreaking They use a statistic to show that England had enough voters to end slavery and establish equality They use a primary source to show that some white people opposed the idea of freeing enslaved people

A person has 4 46L of a 7 45M NaCl solution If they would like to dilute it to 1 31M how much water would they need to add Round to 2 decimal places

Question 2 Which portions of the gram represent times when heat is absorbed and potential energy increases while the temperature and kinetic energy remains constant Temperature C B CD and DE AB and BC AB and CD BC and DE C D Time minutes 2 pts E

UMB CELLULAR RESPIRATION Date Per Directions Read each question and circle the correct answer After answering all questions color the picture using the colors that correspond to each correct answer You may color unnumbered sections of the picture any color you like Question Choice A Choice B 1 Which of the following is the process of breaking down glucose sugar and converting it into energy in the form of adenosine triphosphate ATP 2 Most steps of cellular respiration take place in which part of the cell 3 What are the products of cellular respiration 4 What are the reactants of cellular respiration 5 In which stage of cellular respiration is glucose sugar broken down 6 In which stage of cellular respiration is energy used to produce ATP 7 In which stage is carbon dioxide released and you get rid of it by exhaling 8 What is the main product of cellular respiration 9 Respiration is respiration is and cellular 10 Which statement is false 11 Which statement is false 12 Which statement is true cellular respiration red chloroplast green glucose water and oxygen blue oxygen and glucose black stage 1 glycolysis red stage 1 glycolysis blue stage 1 glycolysis green glucose black gas exchange energy production green Plants and animals carry out cellular respiration red Name Carbon dioxide is a waste product of cellular respiration black All living things need energy yellow photosynthesis orange mitochondria black carbon dioxide water and ATP green carbon dioxide and glucose green stage 2 Krebs cycle yellow stage 2 Krebs cycle yellow stage 2 Krebs cycle red ATP orange energy production gas exchange black Plants do not carry out cellular respiration black Choice C active transport yellow nucleus blue oxygen carbon dioxide and ATP yellow carbon dioxide and water orange stage 3 electron transport chain black stage 3 electron transport chain green stage 3 electron transport chain yellow Cellular respiration releases energy for cells to use orange Producers make their own food and do not carry out cellular respiration green carbon dioxide green glucose production breathing yellow Energy is stored in glucose and is released as ATP orange Only animals perform cellular respiration green Cellular respiration and breathing are the same thing orange

Why do we add sodium chloride to the organic layer in extraction Why do we add magnesium sulfate in extraction

Question 7 Which electron dot symbol represents an atom of chlorine in the ground state 01 3 2 4 CI 1 2 CI 3 2 pts ci 4

pes of Bonds Valence eview arted May 11 at 2 09pm Quiz Instructions his assignment has 22 multiple choice questions and will automatically submit at the end of today s class period Question 1 In the ground state all atoms of Group 13 of the Periodic Table have the same number of nuclear particles electrons occupied principal energy levels valence electrons 2 F

Review tarted May 11 at 2 09pm Quiz Instructions This assignment has 22 multiple choice questions and will automatically submit at the end of today s c Question 3 What is the atomic number of an atom with six valence electrons 8 12 6

Nitrogen molecules have a unique bond their electrons pair up and create a triple bond The top picture represents the molecule showing six valence electrons shared between the two nitrogen atoms the bottom picture pairs those electrons up and shows them making a triple bond Which type of bonding is represented by the following Lewis Dot Diagrams NN N N polar covalent metallic nonpolar covalent

In the previous question which is the limiting reactant Iron Metal Aluminum Metal O Iron III Oxide Oxygen Gas O Aluminum Oxide