General Questions and Answers

Given the following equations and quantities determine the amount of products that form 11 2H2 g O2 g 2H2OHow many moles of water form when 2 5 moles of O2 react 12 Mg s ZnCl2 aq Zn s MgCl2 s a If 5 00 moles of Mg were added to sufficient zinc II chloride how many moles of Zn is formed b What mass of MgCl2 13 4Fe s 302 g 2Fe203 s If 1 03 moles of Fe rust what of moles of Iron III oxide is produced Solve as indicated Given the following reactions determine the amount of reactant used 14 2 Na s 2 H200 2 NaOH aq H2 g If 1 03 mol of NaOH are formed how many moles of Na are required

55 2 points Would CL O acid be more soluble in a polar or nonpolar solvent Nonpolar Polar Previous

replacement reaction Predict the formulae of the two products of the reaction Tap to select or deselect answer Cu PO4 and NaOH Cu Na and PO4OH CuNa2 and PO4 OH 3 Cu3 PO4 2 and NaOH Cu3PO4 and Na OH 2

4 25 moles of Copper Sulfate CuSO4 5 18 moles of Aluminum Sulfate Al2 SO4 3 6 3 8 x 1025 molecules of Carbon dioxide CO 63 12 mols ung 2777 41g Imoles 7 4 2 x 1024 molecules of water 8 1 48 x 1025 molecules of Sugar C12H22O11 Impls 6 02 1023 1 63

Change the following word equa a copper metal oxygen copper II oxide b mercury 1 nitrate potassium bromide mercury 1 bromide potassium nitrate c aluminum metal sulfuric acid aluminum sulfate hydrogen d acetic acid barium hydroxide barium acetate water e iron III carbonate iron III oxide carbon dioxide f sodium metal water sodium hydroxide hydrogen g calcium chloride dihydrate calcium chloride water h bismuth sulfate potassium chromate bismuth chromate potassium sulfate

5 For the equation NH4Cl s NH3 g HCl g If NH3 0 035 M HC1 0 255 M and there is 4 18 g of NH4Cl at equilibrium what is the equilibrium constant Find the equilibrium constant for the reaction COC12 g CO g Cl g if at equilibrium COC1 0 324 M CO 2 69 10 M Cl 4 12 x 106 M

4 Which of the following is dilute A 0 10 M HCI B 1 50 M HCI C 2 50 M HCI D 2 50 M HNO2

DUC CNCO Q8 What is the A of light that is emitted when an excited electron in the hydrogen atom falls from n 7 to m 47 A 4 45 x 10 m B 2 16 x 10 m C 9 18 x 10 m D 2 16 x 10 m

Ms Wendy has a blood volume of 5 22 L and a LDL low density lipoprotein level of 198 mg per 100 cm of blood How many grams of blood cholesterol LDL does Ms Wendy have Type numbers in the boxe 3 points

The density of gold is 19 3 g cm Johan van der Smoot determines the mass of an irregularly shaped piece of gold to be 419 07 g Calculate the volume of van der Smoot s piece of gold with correct significant figures cm Type numbers in the boxes 3 points

56 2 points The type of potential energy contained in a battery is mechanical Ochemical O electrical nuclear

Review on Moles and Reactions 1 3 1 C2H6 O2 CO2 H O 2 Nal Pb NO3 2 NaNO3 Pbl2 3 Al S8 Al2S3 4 7 Balance the reactions as indicated Determine the molar mass of each of the following 4 Na 5 H2 6 H2O 7 Al2 SO4 3 8 10 8 65 2 grams of Cu 9 502 grams of CH4 Name Convert to moles as indicated Pe

M 3 52 2 points Would the molecule below have primarily hydrogen bonding permanent dipole or temporary forces A X B 1 A hydrogen bonding temporary dipole permanent dipole Previous

50 2 points A Boeing 747 one hour after taking off for a nonstop flight from Los Angeles to Australia Does this have more kinetic or potential energy potential kinetic Previous

fee 8 3 O M 37 38 39 40 58 2 points A large raindrop weighs about 0 166 g How many atoms are there in two raindrops 5 55 x 1022 1 66 x 1022 5 55 x 1021 3 32 x 1022 Previous

Determine the number of atoms for each element i this sheet or write on a separate sheet take 1234 1 2 3 4 5 6 7 8 AICI K N MgO Al Se3 FeCl3 TiO V 05 Znl SCF3 9 10 11 12 NH Cl 13 14 15 16 17 18 19 20 21 Na CO3 Ba ClO3 2 Al SO3 3 H O P O5 Cl 0 NO N O NO N O5 NH4 2SO4

34 35 6 40 2 points How many electrons are there in the following ion 76 33 As 3 33 74 9 76 36 30

35 2 points An orange is homogeneous mixture a heterogeneous mixture a compound an element Previous

2 points An unknown compound consists of 30 51 carbon 11 86 nitrogen 54 24 oxygen and 3 39 hydrogen and has a molar mass of 354 0 g Using this information determine molecular formula for this compound C3NO4H4 C5NO6H7 C9N3012H12 C10N2012H14

5 2 points What is the formula for tetraarsenic octasulfide 4AsSg As4S8 As2S4 2 As2S4

7 2 points What is the name of the compound V HSO3 5 Vanadium pentahydrogensulfate Vanadium V hydrogensulfate Vanadium V hydrogensulfite Vanadium bisulfite

18 2 points Which of the following would have the lowest boiling point H O TiO2 CO2 CH4

24 2 points What is the formula for iridium III perchlorate IrCIO4 Ir3CIO4 Ir CIO4 3 Ir CIO4 3

13 2 points The name of the binary acid consisting of hydrogen and fluorine is hydrogen fluoridic acid hydrogen flouride fluoric acid hydrofluoric acid

What is the name of the transparent membrane that encloses each kidney O Renal Papilla Renal Pelvis Renal Medulla Renal Capsule

1 Write a well organized argument letter of three or four paragraphs on an issue that is meaningful to you 2 Direct it toward a specific audience a person or group that is in a position to do something about the issue 3 Clearly state your issue and your position at the beginning 4 Use logical reasons and evidence to support your position 5 Include at least two of the three following three types of appeals to convince this audience logos pathos ethos 6 Address possible counterclaims 7 End with a call to action aimed at achieving an identified goal 8 Use language in ways that will help convince the audience such as rhetorical devices appropriate vocabulary an objective tone a formal style allusions and address 9 As appropriate invent names for individuals groups companies restaurants and other relevant entities 10 Use proper MLA format along with correct grammar spelling and formal tone 11 Use either an appropriate topic of your choice or one of these Write to the president of a local or national company to argue that the company should do more to protect the environment Write to the owner of a local restaurant to argue that it should change its menu to offer more healthy options Write an open letter to people who buy pets at pet stores to argue that they should rescue animals from shelters instead Write to the govern fyour stats to que that the LA LUTONOLUTNU

How can there be an infinite number of equilibrium positions for a particular system at a particular temperature but only one equilibrium constant for this system at this temperature

1 2 points Calculate the weight percent of carbon in C6HO6 40 4 53 9 4 5 30

The heat of vaporization for ethanol is 0 826 kJ g Calculate the heat energy in joules required to boil 86 35 g of ethanol heat energy J

How many orbitals are there in the 8th energy level 64 128 infinite 8

2 2 points C6H12O6 represents the empirical actual formula of a compound

Name Determine the molar mass of each of the following Na Cu Si CI Pb 1 2 3 4 5 Determine the number of moles in each of the following 23 5 grams of Co 216 grams of Ag 6 7 8 9 467 1 kg of K Determine the number of moles in each of the following 10 4 53 x 1023 atoms of Na 11 7 899 x 1023 atoms of Cu 12 1 42 x 1024 atoms of Ti Titanium 5 08 x 1022 atoms of Fe 13 Determine the mass of each of the following 35 1 mol of K 1 04 mol of Cu 0250 mol of Au 14 15 16 17 0759 g of W 1 90 X 102 Mol Of U Determine the number of atoms in each of the following 2 35 mol of Rb 1 79 mol of S 0500 mol of Ar 105 mol of Br Determine the molar mass of the following compounds KF NaOH Ca N MgSO4 18 19 20 21 22 23 24 25 26 27 28 29 CH CO CH NH Ca OH 2 Al SO4 3 K NH4 PO4

The ancient Romans also used the mile as a measurement but the Roman mile was 4854 feet How many meters long is the Roman mile Show work for full credit Just writing the answer even if correct will not earn full credit

True False Question 6 8 messages occur A conversation over the phone has greater message richness than a conversation face to face True 2 pts

The heat of vaporization of water is 40 66 kJ mol How much heat is absorbed when 3 09 g of water boils at atmospheric pressure heat

1 2 3 4 5 Na Cu Si CI Pb Determine the number of moles in each of the following 23 5 grams of Co 216 grams of Ag 0759 g of W 4671 kg of K 6 7 8

15 Why must you first balance a chemical equation before you can write the equilibrium expression

A 25 59 g sample of a substance is initially at 23 7 C After absorbing 1531 J of heat the temperature of the substance is 149 3 C What is the specific heat c of the substance C x10 J g C

3 Which anion will not precipitate silver ion A Chloride B Nitrate C Bromide D Carbonate 4 The following reaction Mg FeO MgO Fe is an example of A combination B cecomposition C single displacement D double displacement 5 Which compound s name ends in ide A KC1 B KCIO C KC102 D KC103 6 What volume of carbon dioxide gas is produced when 3 00 L of oxygen gas react with 7 5 L of carbon monoxide in the following equation 2 CO g O2 g 2 CO g A 6 00 L B 10 5 L C 6 75 L D 3 00 L Page 1 7 A solution is prepared by mixing 50 0 mL of ethanol with 300 0 mL of water What i the volume percent of ethanol in this solution Assume volumes are additive A 14 3 B 16 7 C 25 0 D 50 0 8 What is the density of carbon dioxide gas at STP A 1 96 g L

Fluoride is added to the municipal water supply in many areas to reduce tooth decay On average people are recommended to drink 64 oz 893 g of water each day In doing so you would consume about 6 25 x 10 4 g F ions What is the concentration of F ions in ppm in the water supply 21 ppm F

want to reference Page Section 15 2 mpleting this problem half reaction method to balance each of wing in acidic solution Part A Zn s NO3 aq Zn aq NO g Express your answer as a ionic equation Identify all of the phases in your answer 0 Review A O

Which of the following is a homogeneous mixture Be sure to select all correct answers a iron b salt and sand c oxygen O d none are homogeneous mixtures e air

What is the volume of a 1 25 M solution if it contains 42 grams of sodium hydroxide Volume NaOH mL

72 2 points Identify the conjugate base in the following reaction C6H5 H O C6H6 OH O OH H O C6H5 C6H6 Previous

6 7 8 2 35 2 points HNO would be classified as a weak acid weak base strong acid strong base Previous

1 You walk down the street 19 miles south to the beach from your home What is your a Displacement b Distance walked 2 You walk down the street 2 miles south to the beach from Ball High school and back What is your a Displacement b Distance walked 3 You walk from home to school a distance of 15 miles You turn and walk back 12 miles towards home and stop to rest What is your a Displacement b Distance walked 4 From home you walk 6 miles east then 7 miles north What is your show work a Displacement b Distance walked 5 You are running 5 2 miles per hour Is this a vector or a scalar 6 You are running 2 6 miles per hour towards the seawall Is this a vector or a scalar 7 Given the units meters second meters sec meters seconds Determine units for a velocity b distance c acceleration II PROBLEMS must show work for credit 8 What is your speed velocity if you travel 126 5 meters in 11 5 seconds 9 You run 2 5 m s in tennis shoes for 20 seconds How far have you traveled

Determine the net ionic equation for the following reaction aqueous solutions of silver nitrate and potassium iodide are mixed O Ag aq l aq Agl s O Ag aq NO3 aq K aq aq Agl s KNO3 aq O NO3 aq K aq KNO3 s O AgNO3 aq K aq l aq Agl s KNO3 aq O S aq aq SI s

The molecule PCl3 has a geometric shape similar to OBF3 O H O O CHA O NH3

the net ionic equation for the following reaction aqueous solutions of nickel II chloride and sodium phosphate are mixed o 3Ni2 aq 2PO4 aq Ni3 PO4 2 s O 3Na aq 2PO4 aq Na3PO4 s O Na aq Cl aq NaCl s o 3NICI aq 2Na PO aq Ni PO s 6NaCl aq o 6CI aq 6Na aq 2PO4 aq 6Nat aq 6Cl aq Question 24 Determine the net ionic equation for the following reaction the neutralization of hydrobromic acid with calcium hydroxide solution O 2H aq 2OH aq 2H O l 2HBr aq Ca OH 2 CaBr aq 2H O 1 O2 Br aq Ca2 aq 2OH aq CaBr s 2H O 1 o 2H aq Ca2 aq 2OH aq Ca aq 2H O l

The formula for the oxide of a metal is La 03 The formula for the chloride of the same metal is LaCi O LaCl O LaCl O LaCl