Inorganic Chemistry Questions

15 Consider the reaction 10 pts MnO 4HCI MnCl Cl 2H 0 When 74 8 g of MnO reacts with excess HCI 28 05 g of water was actually produced Calculate the percent yield for this reaction MnO2 74 89 86 92 gimd H O 28 059 0 861 E R m n mm m 3 4 36 5 glme 124 1 18 015 gind 0 861 4 3 4 mol of Hel 1 56 L R Percentyrld actual 10010 Theortical yield

options The total energy released or absorbed by a reaction is a sum of the individual step reactions that occurred Chemical reactions are all added up for a AH Chemical reactions are all added up for a AH Not enough information to answer this question Question 7 Select the correct answer below that correctly describes what a Bronsted Lowery Acid Base Reaction is options An acid base reaction where one compound increases the amount of H or OH in solution An acid base reaction where one compound is donating an H and one atom is accepting an H An acid base reaction where one compound is donating an OH and one atom is accepting an OH An acid base reaction where one compound is donating electrons and another compound is accepting electron Question 8 Calculate the pH of a solution with a concentration of 0 02M H O options 1 70 1 70 10 30 10 30 Question 9 What does a pH of 3 00 mean about a solution options The solution is a strong acid The solution is a strong base The solution is mostly acidic The solution is mostly basic

alyze the word pro0 5 00 grams of solid citric acid is dissolved in 500 00 ml of water to make aqueous citric acid options options 500 00 ml of water 5 00 grams of solid citric acid Question 19 aqueous citric acid options 500 00 ml of water Salt water Table salt NaCl Question 18 A chemical reaction can be reversed if visible salt in the mixture that did not dissolve 1 Question 17 Analyze the word problem and match the vocabulary terms to the chemicals in the word problem Table salt NaCl is dissolved in 500 00 ml of water the salt water was mixed but there is still visible salt in the mixture that did not dissolve What does heat do to reaction and dissolution rate 2 3 4 1 2 3 Solute 4 Solvent Solution Saturated Solution Solute word Solvent 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 less than the activation energy threshold Precioate Saturated Solution

5 Experimental Procedure Part A The substances NaCl Na CO MgSO4 and are all soluble ionic compounds For each substance indicate the ions present in its respective test solution NaCI Na C CI amo ojo noll 29 Na co Na Co MgSo NH CH NHy Mg 50 4 M 2 CL 6 Three colorless solutions in test tubes with no labels are in a test tube rack on the laboratory bench Lying beside the test tubes are three labels potassium iodide KI silver nitrate AgNO3 and sodium sulfide Na S You are to place the labels on the test tubes using only the three solutions present Here are your tests A portion of test tube 1 added to a portion of test tube 3 produces a yellow silver iodide precipitate A portion of test tube 1 added to a portion of test tube 2 produces a black silver sulfide precipitate a Your conclusions are Test tube 1 obl Test tube 2 Test tube 3 b Write the balanced equation for the formation of silver iodide Agl from a mix of two selected solutions provided above Write the balanced equation for the formation of silver sulfide Ag S from a mix of two selected solutions provided

What are greenhouse gases List 5 different green house gases and list the percentages in the atmosphere i Compare the amount of greenhouse gases to non greenhouse gases b Explain how greenhouse gases different from non greenhouse gases C i Why is O not considered a greenhouse gas and CO is considered a greenhouse gas Explanation with graphs about what is happening to the amount of greenhouse gases in the atmos 11 Have they been increasing Decreasing

8 Consider the generic equation for the reaction of the halogens X and Y X2 g 2Y aq 2X aq Y2 8 Is X or Y the more reactive halogen Explain in et

Pick the IUPAC name for the following CI OH CI O 1 4 dichlorophenol 2 5 dichlorophenol O2 3 dichlorophenol O 2 4 dichlorophenol

Which of the following has the greatest number of unpaired electrons in its ground electronic state A Ar B Na C S D Mg E P

Margarine is a healthier alternative to butter Whereas butter is made from saturated animal fat margarine is made from polyunsaturated vegetable oils Despite being made from vegetable oil margarine is a solid that looks and tastes like butter Select the answer that best explains how this is possible The vegetable oil is heated in the presence of an iron catalyst which leads to halogenation of the alkene functional groups The vegetable oil is processed using hydrogenation which adds hydrogen atoms to the unsaturated hydrocarbon chain Hydrogen bromide is used to hydrohalogenate the double bonds in the hydrocarbon chain of the vegetable oil An enantiomer is used to change the chemical and physical properties of the vegetable oil

1 Inference Why does Aven feel so close to Spaghetti the llama TYPE HERE 2 Namesake This chapter is the namesake of the novel In this chapter we hear Aven explain why she is an insignificant event in the life of a cactus What do you think Aven means by this TYPE HERE 3 Characterization At the end of this chapter Aven tries to tell herself that it shouldn t matter what people think of her but she realizes it does matter to her What do you think she s feeling inside Why

Which atom would bond with chlorine to create a bond with the greatest ion character Magnesium Mg Lithium Li Calcium Ca Potassium K

HONONOHO SM A 6 O A MC SO 0 balance for basic conditio

Explicit Details What does Aven make a list of on her blog TYPE HERE 2 Characterization Who is Aven writing the blog post for TYPE HERE 3 Chapter Structure Throughout the course of the novel the author brings up tarantulas as a recurring topic Why do you think this is TYPE HERE 4 Inference Do you think the guitar is a clue for the kids Why or why not TYPE HERE

The illustration to the left represents a mixture of nitrogen blue and oxygen red molecules If the molecules in the above illustration react to form NO according to the equation N O 2 NO the limiting reagent is the number of NO molecules formed is the number of and molecules in excess is

An atmospheric scientist decides to study the reaction between NO and O that produces dinitrogen pentoxide N O5 She fills a stainless steel reaction chamber with 3 3 atm of nitrogen dioxide gas and 3 2 atm of oxygen gas and raises the temperature considerably At equilibrium she measures the pressure of dinitrogen pentoxide to be 1 2 atm Calculate the pressure equilibrium constant K for the reaction that produces nitrogen dioxide at the final temperature of the mixture 2 NO2 g 1 2O2 g N2O5 8 Enter your answer to 2 decimal places

Which of the following electron configurations represents the element with the highest electronegativity Choose 1 answer B 1822s22p 1s 2s22p 1822s22p638

Homeostasis is the ability of the body to O ignore external stimuli to remain in a state of rest O prevent the external environment from changing O prevent the internal environment from changing O quickly restore changed conditions to normal O prevent excessive blood loss

Listen A catalyst changes the reaction rate by lowering the equilibrium constant of the reaction activation energy of the reaction entropy of the reaction enthalpy of the reaction

Calculate AE for each of the following a HIS question has multiple parts Work all the parts to get the most po b q 12 kJ w 91 kJ AE 79 kJ q 45 kJ w 22 kJ AE 1 kJ Num LIJ

The aluminum in a package containing 70 ft of kitchen foil weighs approximately 11 ounces Aluminum has a density of 2 70 g cm What is the approximate thickness of the aluminum foil in millimeters 1 ounce 28 4 g 1 ft 12 in 1 in 2 54 cm Thickness mm

Select all statements describing metals forms ionic compounds with nonmetals bad conductor of electricity good conductor of heat found on the left side of the periodic table tends to gain electrons

What is the major product formed from the following reaction CH3CH CH OH CH3CH OH OCH CH COOH OCH3CH OCH CH3 CH3CH COCH CH3

Which reaction below represents the first ionization of O Oo g e 02 g OO g e O g Oo g O g O g e O g O g e OO g e O g

1 Explicit Details What does Aven say she ll do the next time she goes past the kid outside TYPE HERE 2 Explicit Details Why is Zion eating outside TYPE HERE 3 Characterization Aven s mom defends Aven when other kids have treated her poorly How does Aven s mom defend her TYPE HERE 4 Inference Why do you think Aven starts a conversation with Zion TYPE HERE

Explicit Details Why does Connor not eat in front of others TYPE HERE 2 Summary Summarize Aven s adoption story TYPE HERE 3 Chapter Structure Throughout the book so far we ve heard Dad call Aven Sheebs as a nickname Where did this nickname come from TYPE HERE Quoting Explicit Details Using a quote from this chapter explain what Mom told Aven she could do of the same time she was teaching her how to live TV

3 Name the following salts of the transition and post transition elements using the Stock system a Fe OH 3 b FePO4 6H O c FeSO4 7H O d CuCN e CuCO3 f CuSO4 5H O g Sn NO3 2 h Sn SO4 2 i MnSO4 m CrPO4 j Mn CH3CO 2 n CrSO 6H O k Hg NO3 2 0 Co CO3 3 1 Hg NO3 2 H O p CoSO4 7H O

Place the following in order of decreasing metallic character P As K

Plot Why does Aven s father need to move to Arizona TYPE HERE 2 Explicit Details What is Aven s soccer argument for not moving to Arizona TYPE HERE 3 Figurative Language How does the description of Mom s hair help you picture her TYPE HERE 4 Inference Why does Aven give in to her Dad s plea TYPE HERE

1 Sequencing How does the tarantula hawk hatch its eggs TYPE HERE 2 Characterization Does Aven like soccer as much as she used to Why or why not TYPE HERE 3 Explicit Details Why does Aven like to hike up the hill TYPE HERE 4 Inference What do you think the turquoise necklace might have to do with the Cavanaugh mystery TYPE HERE

Which is a buffer zone between the outside world and most of the cells of the body All of the answers are correct cell membrane O extracellular fluid red blood cells intracellular fluid

Relate why composers of oratorios had such a difficult time O Composers had a difficult time Interpreting the text Composers had a difficult time organizing the acting scenery and costumes O Composers had a difficult time performing oratorios in the church Composers had a difficult time because the number of musicians was enormou

Suppose a patient comes to your clinic suffering from severe dehydration Microscopic examination shows that some of their rbc s look a bit odd and shriveled You choose to give them IV fluids to rehydrate them as fast as possible Will you choose an IV solution that is slightly hypertonic slightly hypotonic or isotonic to their red blood cells WHY

The study of body function in a disease state is O microbiology O histology O pathophysiology O necrology O physiology

Which statement below regarding electron affinity is FALSE Zeff has no impact on electron affinity values Electron affinity values are usually negative because the association of an electron w positive nucleus should produce an ion that is more stable Electron affinities become more positive as atomic size increases Electron pairing in orbitals can have an impact on electron affinity

Ethanethiol and dimethyl sulfide share the same chemical formula C H6S but different bonding arrangements Ethanethiol has a central carbon whereas dimethyl sulfide has a central sulfur Draw their Lewis structures

Pick the larger species from each of the following pairs Match the words in the left column to the appropriate blanks in the sentences on the right Lit I Cs Mo Mo Between Li and Li the larger species is Li Between I and Cs the larger species is Between Mo and Mo the larger species is Between O and O the larger species is R

Which of the following statements is FALSE An atoms is usually larger than its corresponding cation Metals tend to form anions Nonmetals tend to gain electrons An cation is usually smaller than its corresponding atom

When 2 34 g of pure iron Fe is allowed to react with an excess of oxygen O 3 68 g of the final compound is produced Determine the formula of the compound A Fe O B FeO C FeO D FeO3 E FeO

How has Madison made it clear in Federalist Paper 10 that abolishing liberty is foolishness O Comparing liberty with fire because abolishing connotes destruction O Comparing liberty with air which is essential to animal life in spite of it being a destructive agency O Comparing liberty with air because liberty means being free Because liberty is essential to political life

How much mercury is in this sample RATIO MOLES MASS Hg2 1 Moles 2K1 2 0 005 g Now that we know the moles of Hgl2 we can use the ratio in the balanced chemical equation to determine the moles of Hg2 the mercury in the hair sample We need to complete this step because after we know the moles of Hg2 we can then convert it to find the grams of mercury in the sample Hglz 1 0 000002568 0 001167 g 2K 2 Based on the ratios in the chemical equation above if there are 0 000002568 moles Hgl2 there will be moles of Host

Predict the bond order in CO Express your answer as an integer or to one decimal place View Available Hint s bond order 5 VAEO t

Ammonium nitrate NH4NO3 can decompose to form gaseous water nitrogen and oxygen What is the sum of the coefficients in the balanced chemical equation 5 6 7 8

A reaction has a theoretical yield of 45 8 g When the reaction is carried out 27 2 g of the product forms What is the percent yield 35 1 168 44 8 81 2 50 1

The analysis of a chemical compound gives the percent composition by mass C 44 4 H 6 21 S 39 5 O 9 86 Calculate its molecular formula given that its molar mass is about 324 56 g mol C C 44 4 12 01 3 697 10 616 6 00 H 6 21 1 008 6 161 0 616 10 00 5 39 5 32 065 1 232 0 616 2 2 9 86 16 00 0 616 10 616 1

Imagine you are in a laboratory You are exploring the following reaction A B C When the product C is created bubbles form When 10mL of A is added to 10mL of B the reaction takes twenty seconds Your teacher gives you three unknown substances X Y and Z one of which is a catalyst for the reaction Design an experiment to test substances X Y and Z to determine which one is a catalyst for the reaction

Indicate the hybridization about each interior atom in CH3NH2 whose skeletal structure is H3 CNH Match the items in the left column to the appropriate blanks in the sentences on the right trigonal planar tetrahedral trigonal bipyramidal sp sp The interior C atom has interior N atom has electron geometry and electron geometry and Reset Help hybridization The hybridization

3 H The Lewis representation above depicts a reaction between hydrogen blue and a main group element from group electron s to complete its octet and gains these electrons by forming In this representation each Y atom needs atoms of H There are unshared electron pair s and The bonds in the product are H Y H jonic bonding electron pair s in the product molecule red bond s w

Draw the Lewis structure for N H2 whose skeletal structure is HNNH Draw the molecule by placing atoms on the grid and connecting them with bonds Include all lone pairs of electrons 8

Draw the Lewis structure for CCl4 Draw the molecule by placing atoms on the grid and connecting them with bonds Include all lone pairs of electrons DOC

NiO 2Cu 4H Ni2 2Cu 2H O the above reaction the oxidation state of nickel changes from w many electrons are transferred in the reaction to