Inorganic Chemistry Questions

48 2 points What is the conjugate base in the following equation HCI NH3 NH4 Cl CI NH4 HCI

7 10 Given the following CV diagram of an organometallic compound what are the two one electron reductions potentials SHE assuming a Ag AgCl reference electrode was used 2 A 1 5 2 0 2 5

50 2 points What is the base in the following equation 3 PO4 HNO3 NO3 HPO4 PO 3 HNO3 HPO4 NO3

What is the conjugate acid in the following equation CH3NH2 HSO4 CH3NH3 SO4 CH3NH2 CH3NH3 SO4 2

What is the conjugate acid in the following equation CH3COOH NH3 NH4 CH3COO NH3 0 CH3COO NH4

01 Select one 1 Dimensional Analysis 2 Molar Concepts Question 6 Aluminum oxide has the following chemical formula Al2O3 A chemical reaction uses 31 4 grams of aluminum oxide as a reactant Only some of the aluminum oxide is used in the reaction leaving 17 8 grams unused How many moles of aluminum oxide were used in the reaction O 0 133 moles 0 482 moles 0 175 moles 0 308 moles n M 5 Periodic Table of the Elements Te the veli with biedrie S 121 ab Dea ulta ali HIST DIES C Mler 2018 CC BY

Write the chemical formula for the compound barit b Calculate the molar mass of barium sulfate trihydrate show your work c Calculate the percentage by mass of barium in the compound barium sulfate trihydrate show your work

What is the pH of H of 6 59 x 10 10 M 1 09 18 1 23 8 19

How many atoms are in 7 2 moles of Potassium 720 atoms O 39 1 atoms O 4 3 x 1024 atoms 1 2 x 1023 atoms X

Exercise L Identifying acidic and basic solutions from pH values Indicate whether the following pH values are acidic basic or neutral at 25 C ABN tomatoes pH 4 20 ABN lemon juice pH 2 20 ABN saliva pH 7 00 ABN eggs pH 7 80 ABN lime CaO not citrus pH 12 40 A B N strawberries pH 3 00 ABN plasma pH 7 40 ABN soft drink pH 2 80 ABN maple syrup pH 6 80 beans pH 5 00 ABN

Exercise H Using the ion product of water for calculations Calculate H3O when the OH has the following values 1 0 x 10 9 M OH 1 0 x 10 2 M OH 1 0 x 107 M OH 1 2 x 10 6 M OH 3 5 x 10 8 M OH ba

Mg s Pb aq Mg aq Pb s Note Reference the Standard reduction potentials at 25 C and Fundamental constants tables for additional informa Part 1 of 2 Round your answer to 3 significant digits K Part 2 of 2 Round your answer to 4 significant digits 0 0 kJ

Complete the following table for solutions at 25 C H3O OH pH 8 32 1 2 3 4 5 5 0 10 8 Na3PO4 and H3PO4 H CO3 and NaHCO3 M 2 3 1 0 x 10 12 BA 2 40 es Hiq Laimax acidic basic neutral Exercise N Identifying buffer solutions Ha State whether each of the following solutions represents a buffer system and explain why or why not M r 1010 H SO4 and K SO4 neutral Hall et at 9 0 M 0 x 0 HO Motx0X1HC M or x80 1H0

Find the hydrogen ion H concentration for a solutions with the pH of 5 59 1 62 x 10 11 M 2 57 x 10 6 M 3 73 x 10 6 M 1 14 x 10 7 M

27 QUESTION 1 Choose the best instrumental configuration s if you wish to determine each metal on in a mixture of Cu Fe Fe and Ni2 solution without chemical separation ra Fluorescence spectrometer equipped with PMT detector b FTIR c UV visible absorption spectrometer equipped with PMT detector rd UV visible absorption spectrometer equipped with PDA e ICP atomic emission spectrometer rf Flame atomic absorption spectrometer 9 Graphite furnace atomic absorption spectrometer h A voltammetric measurement setup ri GC equipped with various columns packed and capillary and detectors TCD FTR NPR ECR and MS

How many grams of NaCl are required to make 0 500L of 0 25M NaCI

5 63 From the enthalpies of reaction H g F g 2 HF g C s 2 F g CF4 g 2 C s 2 H g C H g calculate AH for the reaction of ethylene with F C H g 6 F g 2 CF g 4 HF g 5 64 Given the data AH 537 kJ AH 680 kJ AH 52 3 kJ N g O g 2 NO g 2 NO g O g 2 NO g 2 N O g 2 N g O g AH 180 7 kJ AH 113 1 kJ AH 163 2 kJ use Hess s law to calculate AH for the reaction 2486 3 k N O g NO g 3 NO g 155 65 kJ

olutions 7 Rubbing alcohol sold in stores is aqueous 2 propanol CH CHOHCH aq Rubbing alcohol is available in concentrations of 70 and 91 2 propanol by volume To make 100 mL of 70 aqueous 2 propanol 70 mL of 2 propanol is diluted with enough water to produce a total volume of 100 mL In a laboratory Investigation a student is given a 132 mL sample of 91 aqueous 2 propanol to separate using the process of distillation Determine the maximum volume of 2 propanol in the 132 mL sample

2 When he opened his shop on March 9 Edwin Torinos put 75 in change in his cash register drawer At the end of the day the cash register readings showed that 3 812 34 had been taken in that 213 88 had been paid out in cash refunds and that Edwin had taken out 50 for his personal use The cash on hand in the drawer at the end of the day was 3 624 75 Was the cash short or over How much

Exercise M Relationship between concentrations pH and acidity Complete the following table for solutions at 25 C enllulos Fanidi H3O OH pH acidic basic neutral 8 32 1 2 3 4 5 5 0 10 8 1 0 x 10 12 2 40 neutral

Exercise A 5 pts Dissociation of salts in water Write an equation for the dissolving of the following salts in water Since they are made up of the conjugate acids and bases of strong acids and bases they do not interact with water when they dissolve to bl NaCl Ca NO3 2 Li SO4 NaOH prk

Exercise D Naming acids and bases Fill in the blank spaces with the formula or name of an acid or base 1 2 3 4 5 6 7 Formula HCN H SO4 H3PO4 KOH Name sodium hydroxide carbonic acid hydrochloric acid encialuolsa 10 aluminum hydroxide H

iive a two word name substrate reaction type for an en yme that catalyzes each of the following reactions Reduction of oxalate Decarboxylation of citrate Removes an amine group from adenosine Forms an ether linkage between two alcohol molecules

D what will be the new volume of the balloon in mL 55 7 Question 7 1 pts 01 501 container holds gas at 3 19 atm What would the pressure be in kPa if the container expanded to

11 Name the process that enables us to break down glucose to get energy 12 Name the organelle where most of our ATP is generated

When a substance reaches its vapor pressure the evaporation of liquid molecules to the gas phase stops O True O False

What is the correct Lewis structure for hydrocyanic acid HCN including the formal charges if any CH 1 H C N A O A B OC D H C N B H C N C H C N H C N D E

to access important valu How many grams of K are there in a sample of K that contains 1 21x1024 atoms

a b a b Use the table to answer the following three questions Mass g Solution 1 2 3 4 NaCi 3 0 3 0 3 0 3 0 H O 100 0 200 0 300 0 400 0 Which of the following solutions is the most dilute Solution 1 Solution 4 Solution 5 6 7 8 Volume mL C H OH 2 0 5 0 9 0 15 0 Which of the following solutions is the most concentrated Solution 5 Solution 6 C Solution 3 d Solution 2 Solution 7 C d Solution 8 What is the percent concentration of C H5OH in Solution 5 Don t guess Do work on your scratch paper 0 2 1 9 C 2 0 d 22 H O 100 0 100 0 100 0 100 0 Which of the follwing is NOT a true colligative property freezing point lowering boiling point lowering hich of the following compounds provides the most solute particles when completely dissociated C vapor pressure lowering

What is a good mnemonic device that will help you remember the nutrients that all needs carbon hydrogen oxygen nitrogen phosphorus and sulfur

3 A 73 8 gram piece of metal at 171 5 C is dropped into 325 grams of water C 4 184 J g C at 20 4 C a If the two exchange heat until the final temperature is 27 2 C find the heat capacity of the metal Then use the chart at the beginning to determine the identity of the metal

Given that Urms 3RT molarmass and R 8 314 J mol K find the root m square velocity of nitrogen gas at 905 K

The specific heat capacity of liquid water is 4 18 J g K How many joules of heat are needed raise the temperature of 7 25 g of water from 20 0 C to 44 1 C A 41 8 J B 730 J C 1 94 x 103 J D 2 39 x 10 2 J E 66 8 J

h Describe one possible grand prize turn What can you say about the values of the two spins 6 5 7 4 8 3 9 2 1

At extremely high pressures the volume taken up by the actual gas particles becomes relevant and cause gases to behave less like ideal gases True O False

Essay 4 topic Explain in your own words what are London forces Why are London forces important How do we know that London forces exist Essay 5 topic Explain in your own words why the presently increasing phenomenon of Global Warming is or is not important to you personally CIENCE IS NOT IMPORTANT and that

Which of the following is NOT true O The Bronsted Lowry Model applies to a wider range of acid base phenomena than does the Arrhenius Moc O The Arrhenius Model of acids and bases was developed before the Bronsted Lowry Model The Bronsted Lowry Model can apply to bases that do not contain hydroxide ions D O The Arrhenius Model of acids and bases applies toward substances that are nonaqueous

Which of these gases will effuse most quickly Br O Xe O 02 O H O

Reactants Cu 0 Pb s Products Mass of solids SCH4U Unit 4 Electrochemistry Cu 24 Pb s 0 892012 g Mass of solids 0 892012 g Molarity of metal ag 0 1 M Molarity of metal aq 3 92983e 7 M Observations Blue liquid Date Observations Clear

2 How did life in big cities differ from life in small towns a City dwellers were more tolerant to drinking and gambling b City dwellers were open to new ideas in art science and politics c Cities were densely populated and people with different backgrounds came into contact with e another d All of the above

The vapor pressure of a substance increases as temperature increases O True False

is the process of gas particles spreading out to evenly distribute across all available space

At low temperature the interactions between molecules become more relevant and cause gases to behave less like ideal gases O True O False

To establish a standard curve for a BSA standard curve using Bluret the spectrophotometer wavelength is set on which value O the wavelength at which Biuret s absorption value is the highest O the wavelength at which the BSA s absorption value is the lowest OBSA standard curve should not be drawn up using Biuret the wavelength at which the copper it complex s absorption value is the highest O the wavelength at which Biuret s absorption value is the lowest O the wavelength at which the BSA s absorption value is the highest the wavelength at which the copper i complex s absorption value is the lowest

Helium gas at standard atmospheric pressure fills a balloon up to 1 19 L If the pressure increases to 314 psi what will be the new volume of the balloon in mL

Which of these gases will effuse most quickly O Br2 O Xe O 0 O H O

The name of the molecule shown is 3 methyl 4 ethyl 1 heptene 4 ethyl 3 methyl 1 heptene 3 methyl 4 propyl 1 hexene 4 ethyl 5 methyl 6 heptene I DON T KNOW YET submit

We can draw three inequivalent Lewis structures for carbon dioxide CO concepts of formal charge and electronegativity can help us choose the structure that is the most significant representation 1 Assign formal charges to the elements in each of the structures below Formal Charge 01 C 02 0 C 0 A 0 C 0 B 0 C 0 C 2 The structure that contributes most significantly to the overall electronic of CO2 is

A 1 50 L container holds gas at 3 19 atm What would the pressure be in kPa if the container expanded to four times the volume

4 98 moles of gas occupy 51 7 L in a flexible container If another 3 01 moles are added to the container what will the total volume in L be