Inorganic Chemistry Questions

Listen Determine the formal charge of the oxygen atom shown in red 0 CH3 S CH3

Draw the Lewis structure for CO2 Draw the molecule by placing atoms on the grid and connecting them with bonds Include all lone pairs of electrons

Throughout the past few chapters Aven keeps bringing up the mystery surrounding the Cavanaugh family Why do you think she s so enamored with this storymystery Why does the author bring this mystery up in multiple chapters TYPE HERE

HgO s FeCl3 aq CH OH Al s CaCl aq NH3 g H PO4 aq Na s Mg3N s C8H18 1 Hg 1 O g NaOH aq O g Cu NO3 2 aq Al NO3 3 aq 25 Fe OH 3 s O g NaCl aq CO g H O g Ca3 ASO4 2 s Cu s K3ASO4 aq N g H g Ba OH aq Ba3 PO4 2 s Cl g NaCl s H O 1 Mg OH aq NH3 g 16 CO g KCl aq H O 1 18 H 0 1 Combination

CH CI CH OH A A A KOHA B C CI OH OH OH B KCI C H O B KCIO3 C H O B KCIO C H O

Which one of the following factors decreases one s risk of developing osteoporosis short stature None of these options is correct lifting weights pumping iron and exercise early menopause drinking coffee old age Question 31 1 point In terms of credit for the discovery of the structure of DNA pick the correct answer Oswald Avery was the third Nobel winner along with Watson and Crick It has been made clear by careful research that Rosalind Franklin was not given the prize because she was a woman Linus Pauling was included with Watson and Crick in the Nobel Prize None of these statements is correct Rosalind Franklin s X ray work was key in the discovery but she did not share in the Nobel Prize

Which one of these dietary supplements has been shown to increase the risk of lung cancer in smokers Resveratrol Beta carotene Niacin Vitamin D Calcium O None of these options is correct Question 23 1 point The unique chemical properties of enzymes allow them to assist with many bodily functions Where does the body get these vital components of life All enzymes are supplied at birth by the mother O Vitamins serve as the building blocks for enzymes in the body Enzymes are produced in the body from amino acids Enzymes comes from meat products in the diet Enzymes are supplied by all foods in the diet

Consider the structure of the amino acid alanine Indicate the hybridization about each interior atom Drag the labels to the appropriate targets View Available Hint s 4 Reset

62 03 g mol O42 03 g mol 60 03 g mol 39 03 g mol

You create a process to be used in conjunction with combustion analysis using chlorine gas to determine the amount of selenium in certain organic compounds If there is selenium in the molecule SeCl 149 87 g mol is produced Analysis of 28 20 g of an unknown compound produces 36 21 g CO2 18 53 g H O and 30 83 g SeCl2 The molar mass of the compound is about 137 g mol What is its molecular formula C4H10Se C8H Se C9H18Se C3H12Se C H8Se

Table 1 Q Zn Cu 0 0001 M 1 0 M 0 0001 0 001 0 01 log Q 4 3 2 Cell Potential V 1 22 1 19 1 17 3 Create a graph with log Q on the x axis and the cell potential E cell on the y axis What type of relationship is this 4 Use your table to help you locate the point on your graph at which the ratio of reactant to product concentration Q is equal to 1 What is the cell potential at this point What is the relevance of this point 5 Where on the graph is Q 1 Where is Q 1 What does this mean in relation to electrolyte concentrations 6 What does the graph tell you about how the cell potential of a galvanic cell changes as the cell operates Hint Remember galvanic cells are spontaneous reactions which indicates the in which the reaction proceeds

Read the following passage Corrosion is a leading cause of the structural degradation of metal bridges Electroplating is a process used to accentuate this problem This process is spontaneous and involves putting a layer of inactive metal over the active metal Which of the following edits need to be made for the passage to be correct i Change Corrosion to Anti corrosion ii Change accentuate to prevent iii Change spontaneous to non spontaneous iv Reverse the terms inactive and active O ii iii iv O i ii O ii iii i iii iv

Which statement is correct with respect to eggs The white of an egg has about equal quantities of fat and protein None of these statements is correct The white of an egg is about 90 water On cooking the yolk and white solidify within a degree celsius of each other The yolk of the egg is about 20 water and mostly protein

The sodium ion is a dietary mineral essential to good nutrition Sodium is necessary for the binding of adenosine triphosphate an organic compound that provides energy to drive many processes in living cells with potassium The main dietary source of sodium is table salt sodium chloride The recommended daily allowance RDA for sodium is 1 50 106 g day How much sodium chloride 39 34 Na should be consumed to meet the RDA Express your answer in micrograms to three significant figures m NaCl VAEO ug

Which of the following is the correct condensed electron configuration for nickel Ni using the Diagonal Rule Ne 4s 3d4p NeJ45 30 4p O Ar 4s 3c 4p6 Ar 4s 3d

What wavelength of light contains enough energy in a single photon to ionize a hydrogen atom Express your answer in nanometers to three significant figures 10 A O A nm

What is the shape of a molecule with a AX2 structural formula Tetrahedral Trigonal planar Linear

Explain the difference in functional groups between an alcohol and a carboxylic acid An alcohol contains one or more hydroxyl groups whereas a carboxylic acid contains a hydroxyl group attached to a carbonyl group a carboxyl group whereas a carboxylic acid contains a hydroxyl group a carbonyl group whereas a carboxylic acid contains a carboxyl group attached to an amino group only a single hydroxyl group whereas a carboxylic acid contains a carbonyl group

Which molecule below contains a central atom with an expanded octet N O AsCl5 BF3 PF3 SeCl

Label all bonds on the sketch of the structure Drag the appropriate labels to their respective targets Labels can be used once more than once or not at all o N sp H s o N p H s N sp N sp o N p N p T N p N p T N sp N sp Lone pair in N sp H 1 H H H Reset

Arrange the elements in order of increasing electronegativity O S

Which has the highest molecular mass OIBr2 O Br 08 OCBr4 O Br 0

What does the following equation represent Ca5 PO4 3OH 5 Ca 3 PO4 OH the production of calcium ions in milk the production of phosphate in soft drinks the formation of base OH in cheese production coral formation the loss of bone material None of these options is correct

following aspects of fructose activity in the body is correct Since fructose is a sugar it is metabolized in the same way as is glucose Fructose is processed by the liver to make carbon monoxide and water None of these options is correct Fructose is processed by the liver to make fat Fructose is not involved with the promotion of Advanced Glycation End products Fructose can not be digested by humans because they lack the enzyme to brea it down Question 37 1 point Meaghan and Sophie are considering eating a diet that is 10 fat by weight What percentage of their total calories would be fat 31 None of these options is correct 75 25

Hydrogen exists as three isotopes These isotopes differ by the number of the atom Ocharges Oneutrons electrons O protons O particles contained in

A compound has the empirical formula CH and a formula mass of 78 1 amu What is the molecular formula of the compound

ret the following problem answer below A 250mL compressed tank is filled with Hydrogen gas and has a pressure of 100kPa If all of the Hydrogen gas is removed from the tank and pumped into a IL tank what happens to the temperature of the gas options The temperature in the 250 mL tank decreases The temperature in the 250 mL tank increases The temperature in the 1 L tank increases All of the above None of the above Question 15 The reaction rate of a reaction can be sped up by which of the following More than one answer is required wrong answers will get a penalty options Increase the pressure inside the container where the reaction is happening Decrease the temperature of the reaction Increase the temperature of the reaction Use a catalyst to reduce the needed activation energy Increase the concentration of reactants Decrease the concentration of reactants Decrease the pressure of the container where the reaction is happening Question 18 A chemical reaction can be reversed if options The energy of the reactants exceeds the activation energy threshold The energy of the products exceeds the activation energy threshold The energy of the reactants is less than the activation energy threshold The energy of the products is loss than the activation onorgy threshold

MISSED THIS Watch IWE 4 12 Read Section 4 10 You can click on the Review link to access the section in your eText Part A Copper II fluoride contains 37 42 F by mass Use this percentage to calculate the mass of fluorine contained in 54 5 g of copper II fluoride Express your answer in grams to three significant figures Mr AEO 2822 g

A substance absorbs 2 96 104 J of heat and raises the temperature of the system by 312 C What is the mass of the substance if the specific heat capacity is 0 262 J g C 32 8 g 58 7 mg 2 85 mg 362 g

Which statement below regarding bonding is FALSE A single type of atom cannot form more than one kind of chemical bond The energy of separated atoms usually decreases when stable chemical compounds form Most compounds are more stable than the free elements that make them up The strength of a bond depends on the identities of the atoms involved Some atoms form different numbers of chemical bonds exhibit more than one valency

How many moles of C6Hg contain 2 25 x 1024 hydrogen atoms O1 52 moles C6Hg 0 487 moles C6Hg 2 43 moles C6H8 3 74 moles C6Hg 0 223 moles C6H8

Let s start by predicting the way that a single drop of water and a single drop of alcohol will look when you put them on a surface like a penny or wax paper Do the following 1 In your notes draw a picture of how you think a single drop of water on a penny will look compared with how a single drop of alcohol will look 2 Below your drawing explain why you think the two will be different 3 Once you ve made your drawing and prediction go ahead and do the experiment if you have materials Then click show the answer 4 If you don t have the materials click on show the answer to see the results and to verify your prediction

Which of the following statements describe why CH4 methane has a slightly larger bond angle than NH3 ammonia The additional bond in methane repels the other bonds more than the lone pair of electrons in ammonia The repulsion between electrons in the C H covalent bond of methane is maximized by the trigonal pyramidal shape The two lone pairs of electrons in ammonia push the N H covalent bonds closer together The presence of a lone pair of electrons in ammonia repels the electrons in the N H covalent bonds more than the C H bonds in methane

Estradiol is a female sexual hormone that causes maturation and maintenance of the female reproductive system Elemental analysis of estradiol gave the following mass percent composition C 79 37 H 8 88 O 11 75 The molar mass of estradiol is 272 37 g mol Part A Find the molecular formula of estradiol Express your answer as a chemical formula 0 A O

Injected with blood from human beriberi patients they develop niacin deficiency they are unaffected they develop rickets none of these responses is correct they develop beriberi they die Question 19 1 point Which of the following statements about minerals is correct It has only recently last 5 years been determined that iron and iodide are essential for good health Zinc as elemental Zn is necessary for growth and is extensively present in bread Selenium as selenite functions as a useful antioxidant component Boron a borate salt is important mainly in having nice hair None of these statements is correct The exact dietary requirements for all minerals are now well worked out

Answer can be in bullet points or complete sentences 2 3 max Based on the information discussed in chapter 4 provide 2 pieces of evidence that support the endosymbiotic theory

Which compound is likely to have an incomplete octet uma BH3 N 0 NF3 CF2C12

According to VSEPR theory what are the bond angles of silicon tetrachloride SiCl4 s O 104 5 109 5 120

Which one of the following is correct concerning flaxseed It contains lignans which have possible anti cancer effects It is low in fiber None of these statements is correct It is not safe for human consumption It contains only omega 6 fats It has a constipating effect Question 39 1 point Saved

Which one of the following statements abou The calcium content of whole milk and skim milk is virtually identical O Calcium is found only in foods of animal origin The only way to meet the body s daily requirement of about 1 gram of calcium to take calcium supplements None of these statements is correct Calcium in the diet is either incorporated into bone or excreted An adequate intake of Vitamin A is required for calcium absorption Question 71 1 point Which one of the following would not be present in an apple Vitamin B12 All of the options are present in an apple Rubbing alcohol Fiber Acetone Formaldehyde

The shape of an atomic orbital is defined by the spin quantum number s principal quantum number n O magnetic quantum number m secondary quantum number 0

Which of the following is an example of sp d hybridizec central atom A BrFs B PF3 C CIO4 D XeF4 E I

The media should only be open when the bunsen burner is on O True O False

Given the two reduction half reactions for the following galvanic cell determine the standard cell potential E cell 2 Br2 1 Zn s Znaq 2 Br aq Reduction half reactions Br2 1 2 e 2 Br aq 2 Zn aq 2 e Zn s 0 33 V O 1 85 V 0 33 V 1 85 V E 1 09 V E 0 76 V 1 4

2 Convert 350 mL to A liter is a unit of volume a L b nL

Assume the diameter of the field of vision in your microscope is 2 mm under low power If one Bacillus cell measures 2 um long how many Bacillus cells could fit end to end across the field How many 10 um yeast cells could fit across the field

SO2 reacts with H S as follows 2H2S SO2 35 2H O When 7 50 g of H S reacts with 12 75 g of SO2 which statement is true A SO2 is the limiting reagent OB S is the limiting reagent OC H S is the limiting reagent D H O is the limiting reagent

At 25 C the equilibrium constant for the reaction 2 A aq B aq C aq is 1 77 If he concentration of B aq is 0 353 M and the concentration of C aq is 0 497 M what vould be the minimal concentration of A aq in mol L required to make the reaction pontaneous

What does MO theory explain that other bonding theories do not bonding patterns of atoms and magnetic molecular shape and polarity bonding capacity of atoms and shape molecular magnetic and spectroscopic properties bond angles and bond distance

MISSED THIS Watch IWE 4 10 Read Section 4 9 You can click on the Review link to access the section in your e Text How many molecules are in each of the following 324 g CBr4 Express your answer in molecules to three significant figures VA O xa Xb x vx f X x IXI X 10n