Inorganic Chemistry Questions

The structure H2 CH2 12CH CHCH3 represents an unsaturated fat an amino acid a saturated fat a fake fat None of these options is correct a carbohydrate Question 6 1 point Consider a new drug for the treatment of osteoporosis Select the most lik mechanism of action for this medication from the list below Causes osteoclast cells to increase Acts to stimulate osteoclast activity above normal levels ONeutralizes factors that normally inhibit osteoblast activity Stimulates the processes of bone resorption None of these options is correct Decreases the absorption of vitamin D from the gut

Identify the true statement s about the molecular orbital theory The molecular orbital theory describes molecules with delocalized bonding The molecular orbital theory describes the bonding in molecules in terms of a single electron configuration The molecular orbital theory requires two or more resonance formulas to describe the bonding in molecules

4 The diameter of a bacterium is 1 um and the diameter of the Herpes Virus is 130 nm Approximately how much smaller is the Herpes Virus than the bacterium in um Show all your work

Determine the polarity of a sulfur hexafluoride SF6 b phosphorus pentachloride PC15 c bromine pentafluoride BrF5

Correctly balance the following redox reaction under acidic conditions 2 Cu s NO3 aq Cu aq NO2 g 2 Cu aq Cu s 2 NO3 aq Cuq 2 NO2 g 2 H O 1 2 Cu s 2 NO3 aq 2 H O 1 Cuq 2 NO2 g 4 H Cu aq aq O Cu s 2 NO3 aq 2 Haq Cu 2 NO2 g 2 H O 1 2 H Cu s 2 NO3 aq 4 H 2 Cuq 2 NO2 g 2 H O 1 aq

Question 78 1 point Resveratrol is the compound touted as the healthy ingredient in pomegranate juice is a B vitamin found in the skin of grapes is a compound found in red wine is a preservative that has been attacked by the Food Babe None of these options is correct is only available in synthetic supplements

Which molecule or ion below has the largest bond angle OF 0 NH3 NF3 NF CF4

Convert 0 750 g to A gram is a unit of mass g g b

Cholesterol in the diet boosts trans fats in the blood Aspirin can be used to treat hemophilia Lignans have anti cancer effects O Grape seed extract increases the number of senescent cells in the body None of these statements is correct Resveratrol in wine is an antioxidant but is also a known carcinogen Question 14 1 point Changes in taste and smell can be caused by a deficiency in iron Tollowing is correct zinc selenium iodine calcium

You are using the specific heat formula Q mcAt to calculate the amount of heat released by an object What are the units of the specific heat constant if you want to communicate your answer in SI units J gK kJ kg C J g C J kg F

Which of the following describes the result for 2 methyl 1 propanol on the 2 4 dinitrophenylhydrazine DNPH test A purple solution with precipitate An orange solution with precipitate A red solution A clear orange solution

Sodium fluoride cannot be used to prevent tooth decay None of these statements is correct Calcium is needed most by elderly men as opposed to elderly women Mineral supplements are usually recommended for most of the population Many calcium pills are made of the same material as limestone O Salt substitutes are usually potassium iodide about salts in the diet is correct Question 4 1 point Which one of the following would be a component of innate immunity None of these options is correct SARS CoV 2 antibodies antigen histamine spike protein

The compound copper II nitrate is a strong electrolyte Write the reaction when solid copper II nitrate is put into water

What is the environmental impact of using radioactive tracers in medicine to help diagnose disease The radioactive isotope must be stored in special containers and allowed to decay before being disposed The value of this tool to society is not high enough to warrant the cost of production storage and disposal The tracer contains harmful radioactive isotopes that must be disposed of safely to prevent soil and water contamination The radioactive isotope poses little threat to wildlife but is harmful if it gets into human drinking water and crop soil

Concerning the names on scientific publications pick the correct statement An asterisk is always associated with the person who wrote the article The senior head of project author is always listed first There can be any number of names on publications and in any order The names vary as per the discipline but are almost always in alphabetical order None of these statements is correct The author who supported the research is usually listed first but there is a limit to the number of authors

Which of the following statements regarding the combustion of propane is false The products contain less energy than the energy stored in the bonds of the reactants The exothermic character of the reaction is explained by the breaking of high energy C C and C H bonds The reaction has a positive change in enthalpy The reaction has a positive change in entropy

Ethanol for Transport Part 2 0 0 5 0 puntos calificado Ethanol has an energy density of 021 GJ L How many liters of ethanol are required to supply US transportation demand Liters

The central atom in a molecule has a bent molecular geometry Determine the hybridization of the orbitals in the atom sp O sp sp3

nate propanoate is used to sweeten soft drinks O is only found in plant foods is the substance in oat bran that reduces cholesterol is a suspected carcinogen None of these options is correct O inhibits the growth of moulds Question 59 1 point B vitamins are termed B for body building are only available as supplements by prescription are fat soluble must be injected to be effective None of these statements is correct are involved in energy production

Match each four electron group designation with the correct molecular shape Instructions AX4 AX3E AX E2 Tetrahedral

aved Ammonia has many applications from fertilizer to a refrigerant The following reaction describes how nitrogen and hydrogen react to make ammonia N2 g 3 H2 g 2 NH3 g The following statement regarding the Haber process which is used by humans to manufacture ammonia contains an error Statement The Haber process changes the state of ammonia from gas to liquid which prevents the forward reaction from occurring Select the option that corrects the error in the statement The Haber process changes the state of hydrogen from gas to liquid which prevents the forward reaction from occurring The Haber process changes the state of ammonia from gas to solid which prevents the forward reaction from occurring The Haber process changes the state of ammonia from gas to liquid which prevents the reverse reaction from occurring The Haber process changes the state of ammonia from gas to liquid which allows the forward reaction to occur

4 Calculate the following A How many moles of HCI are present in 85 5 mL of a 0 160 M HCl solution B Determine the volume of 0 230 M NaOH required to neutralize the HCI solution

When creating gold plating for iron metal calculate the mass of Au s produced when a current of 4 0 A runs through a solution of Aut for 45 minutes aq 1 1 10 1 g Au 2 2 10 g Au 4 4 10 g Au 5 9 g Au

Dolomite is a substance sold in health food stores Select the correct statement Due to the toxic nature of dolomite it has been banned in the U S and Canada Dolomite can contain toxic heavy metals such as mercury Dolomite is a mixture of calcium and magnesium carbonate and is always purified to eliminate other elements This product is mainly magnesium sulfate and is soluble in water This substance is not a good source of calcium as it does not dissolve well in water None of these statements is correct

Write a balanced equation to show the reaction of aqueous aluminum acetate with aqueous ammonium phosphate to form solid aluminum phosphate and aqueous ammonium acetate A Al C H302 3 aq NH4 3PO4 aq B AI CO3 2 aq NH3 2PO4 aq C AI C H30 2 aq NH3 2PO4 aq OD AI C H302 2 aq NH4 2PO4 aq AIPO4 s 2 NH3CO3 aq AIPO4 s 3 NH4C H O aq AIPO4 s 2 NH3C H O aq AIPO4 s 2 NH4C H3O aq

Which of the following classes of organic molecules is broken down during the industrial process of thermal cracking Alkane Amine Aldehyde Alcohol

The rate law equation for a first order reaction is a mathematical expression that states Or r k A Or k r k Or K A Or K A

An atom that has a condensed electron configuration of Ar 4s23d is a n transition metal alkaline earth metal Onon metal alkali metal

Calculate the change in enthalpy for the following equation 2 NH3 g 4H O 1 2 NO2 g 7 H2 g Given W N2 g 3 H2 g 2 NH3 g AH 207 0 kJ N2 g 2 O2 g 2 NO2 g H2 g O2 g H O 1 256 3 kJ 208 4 kJ 40 7 kJ AH 148 5 kJ AH 78 7 kJ

Which of the following pairs are considered to deliver all the required amino acids complete proteins rice and corn rice and beans none on this list potatoes and rice wheat and rice Question 33 1 point Which one of the following concerning meatless burgers is correct The calorie count is always higher than in beef burgers The total fat content is always higher than in beef burgers None of these statements is true The sodium level is higher than in beef burgers The basic component of meatless burgers is always soy There is essentially no nutritional difference between meatless and beef burgers

Which of the following statements best describes Le Ch telier s principle A system will respond to an increase in the concentration of reactants by favouring the formation of the products Systems that are at equilibrium will counteract changes to the conditions to re establish a new equilibrium state A system where the rates of the forward and reverse reaction are identical favouring neither the products nor the reactants Systems at equilibrium respond in a predictable way to changes in temperature pressure volume or concentration

Choose the half reaction that indicates that a reactant has been reduced OFe q 2 Fe 29 e HNO2 aq H O 1 NO3 aq 3 Ha 2 e aq O Ca 2 e Ca s aq O 2 Claq Cl2 g e

Given the molar enthalpy of combustion of ethanol C H5OH is 1368 54 kJ mol how much heat in kilojoules will be released by the combustion of 25 6 g at standard pressure O 1 87 10 2 kJ O 53 45 kJ O 2 46x10 kJ

Which of the following is the correct NET ionic equation when zinc metal is added to aqueous lead II sulfate Pb s Znq Znaq Zn s Pb aq Zn s Pb aq 2 2 SO4 aq Pb s Zn SO4 q aq Zn s Pb Pb s Zn aq Zn s PbSO4 aq Pb s ZnSO4 aq

When iron metal corrodes it O acts as an oxidizing agent undergoes oxidation undergoes reduction O acts as a cathode

Complete the balanced equation for the reaction that occurs when the following strong acids and bases react with each other Use the lowest possible coefficients Be sure to specify states such as aq or s If a boxi not needed leave it blank a b C HNO3 aq H SO4 aq HC1O4 aq NaOH aq NaOH aq CsOH aq

c How many moles of NaOH are required for the titration 203 d Calculate the Molarity of NaOH solution Molarity of NaOH moles NaOH volume of NaOH added in L

A 95 00 mL sample of 0 750 M HNO3 is titrated with 15 00 mL of 0 625 M LIOH What is the concentration of H remaining in the flask following the reaction 0 0619 M 0 07125 M 0 00937 M

Explicit Details Where does this chapter take place TYPE HERE 2 Explicit Details Why does Aven decide to ride the bus home TYPE HERE 3 Inference Why do you think Connor doesn t eat very much Why do think he wants to go home before dinner TYPE HERE 4 Inference Why do you think Aven is so interested in the Cavanaugh mystery TYPE HERE

Given that hydrogen carbonate ion HCO3 aq has a K of 4 8x10 11 which of the D following is the K for the carbonate ion CO3 aq 1 0x10 14 1 0 10 7 4 8x10 11 2 1 10 4

4 the 4 underlined weak words in the space below Unfortunately my school has a few students who are very mean to others My friends and I hate when they bully others so we are planning to report them to the principal s office They are not nice so there should be consequences for their actions WEAK WORD 1 Very Type here WEAK WORD 2 Mean Type here WEAK WORD 3 Hate Type here

Which statement below regarding ionic compounds is FALSE The net charge of an ionic compound is zero Oppositely charged ions collect together in part because isolated ions are not stable The energy associated with an ionic bond is a form of electrostatic potential energy lons are held together by shared pairs of electrons Oppositely charged ions arrange themselves to minimize repulsions and maximize attractions

Explicit Details Where does Aven s mom suggest that Connor go Why does Aven ask him instead TYPE HERE 2 Description What did you learn about Tourette Syndrome during this chapter TYPE HERE 3 Characterization What argument does Connor make about why his condition is worse than Aven s TYPE HERE

A Br nsted Lowry acid is defined as a proton acceptor an electron pair acceptor a hydroxide ion acceptor O a proton donor

Consider the following reaction 2 NOCI g 2 NO g Cl2 g What is the Keq for this reaction under STP if given the following Initial NOCI g 2 5 M Equilibrium Cl2 g 0 40 M 1 8 10 1 1x10 8 8 10 2 1 0 10

Pick the right MO molecular orbital energy diagram of the cyclooctatetraene A O A OB OC B C D

3 Convert 0 750 g to A gram is a unit of mass a ug b mg bacterium is 1 um and the diameter of 4 The diameter of a the Herpes Virus is 130 nm Approximately how much small in the Harnes Virus than the bacterium in um Show

22222 1 Setting The narrator takes us on a tour of Stagecoach Pass in this chapter Why do you think the author did this TYPE HERE 2 Explicit Details What does Aven tell us about Henry the ice cream shop worker TYPE HERE 3 Connotation Does the word senile have a positive or negative connotation How do you know TYPE HERE 4 Inference What do you think is in the shed that Aven finds Defend your answer TYPE HERE

U S plane manufacturer McDonnell Douglas has authorized Mitsubishi 2 Heavy Industries a Japanese company to use its trademarks patents and other proprietary knowledge to manufacture F 15 fighter planes Mitsubishi Heavy Industries pays McDonnell Douglas This is an example of contract manufacturing O importing franchising licensing exporting

What type of bond occurs between an atom of boron and iodine given the electronegativity of B 2 0 and 1 2 5 polar covalent bond nonpolar covalent bond ionic bond metallic bond