Chemistry Regents Review

Table A and B

Questions using table A or B A gas has a volume of 100.L at a temperature and pressure of 50. K and 50. kPa. What is the volume of this gas at STP? How many joules of energy are needed to heat 5 grams of water from 25 oC to 35oC? How many joules of energy are needed to melt 5 grams of water at its melting pt (or 0oC) ? How many joules of energy are needed to vaporize 5 grams of water at its boiling pt. (or 100oC)?

Table C Convert 100. kilojoules to joules Convert 10 grams to centigrams

Table D

Table E Used to write formulas of ionic compounds 5. Write the formula of sodium nitrate 6.Write the formula of copper (I) hydroxide 7. Write the formula of aluminum sulfate

Table F 8. Which salt is the most soluble? Sodium nitrate Silver chloride Calcium carbonate Copper (I) sulfide

9. A saturated aqueous solution of which of the following solutes in 100g of water is the most concentrated at 50oC? SO2 B) NH3 C) NH4Cl D) KNO3 10. Which term describes a solution of NH4Cl made with 20g of NH4Cl in 100g of water at 50oC? Saturated Unsaturated Supersaturated 11. How many grams of NaNO3 will dissolve in 150 g of water at 25oC?

Table H 12) Which of the following liquids has the highest vapor pressure at 50oC? Water B) Ethanol C) propanone D) ethanoic aid 13) Which of the following liquids has the weakest intermolecular forces of attraction? 14) What is the normal boiling pt of ethanoic acid? 15) What is the boiling pt of water at an atmospheric pressure of 50 kPa?

Table I 16) Which reaction releases energy as it proceeds? N2 + O2  2NO H2 + I2  2HI N2 + 2O2  2NO2 2CO + O2  2CO2 17) In which reaction is the potential energy of the reactants less than the potential energy of the products? 2H2 + O2  2H2O N2 + 3H2  2NH3 2C + 2H2  C2H4 18) Which of the following salts (when dissolved in water) could be used in a chemical cold pack? KNO3 NaOH LiBr 19) How much heat is released at 298 K and 101.3 kPa, when 2 moles of Al combine with excess oxygen to produce Al2O3?

Table J 20)Which metal is able to replace Zn but not Al in a single replacement reaction? Mg Ti Cr Sr 21) Which of the following metals with react with HCl in a single replacement reaction to produce H2 gas Pb Cu Ag Au 22) Which of the following salts (when dissolved in water) could be used in a chemical cold pack? KNO3 NaOH LiBr

Table J 23) Indicate the direction of electron flow in the voltaic cell below 24) Which metal is the anode? 25) What happens to the mass of the Ag electrode as the cell operates?

26) Which of the following is an Arrhenius acid? HNO2 KNO2 NaNO3 NaOH 27) Which of the following would change the color of red litmus? Use Table K and L HCl HNO3 H3PO4 28) Which of the following substances will raise the pH of an aqueous solution H2CO3 29. Which of the following substances yields H+ as the only positive ion in solution Ca(OH)2 NH3

Table M 30) Bromcresol green and thymol are both yellow at which pH 10 11 6 2 31) Based on the results of testing colorless solutions with indicators, which solution is most acidic? A) a solution in which bromthymol blue is blue B)a solution in which bromcresol green is blue C)a solution in which phenolphthalein is pink D)a solution in which methyl orange is red 32) Which indicator would best distinguish between a solution with a pH of 3.5 and a solution with a pH of 5.5? A)bromthymol blue     B) Litmus C) bromcresol green    D) thymol blue

Table N 33) What is the decay mode of K-37? 34)Which 2 radioisotopes have the same decay mode? Ca-37 and Fe-53 Fr-220 and Co-60 K-37 and K-42 Tc-99 and Ne-19 35) Which of radioisotopes contains an alpha emitter, beta emitter and and positron emitter? C-14, N-16, P-32 Cs-137, Fr-220, Tc-99 Kr-85, Ne-19, Rn-222 Pu-239, Th-232, U-238 36) What fraction of a sample of I-131 remains after 24 days?

Table O 37) What radioactive emanation has the greatest mass? A) Alpha B) Beta C) positron D) gamma 38) What radioactive emanation has a positive charge and the weakest penetrating power Alpha B) Beta C) positron D) gamma 39) What radioactive emanation has no mass or charge? 40) Which radioactive emanation shown below represents alpha radiation? A) A B) B C)

Table P and Q 41) Draw the structure of butane 42) Draw the structure of 2-pentene 43) Draw the structure of 1-heptyne 44) Which of the follow hydrocarbons are part of the same homologous series? C3H8 , CH4, C4H10 C3H8 , CH4, C4H8 C2H4 , CH4, C4H6 C5H10 , C5H12, C4H10

Table R 45) Draw the structure of 2- propanol 46) Draw the structure of methanal Draw the structure 2-butanamine 48) Draw the structure of ethyl ethanoate

Periodic table of elements 49) 50) 51)

Periodic Table 52) 53) 54)

Table S Table S contains data on various physical properties of the elements—atomic radius, electronegativity, melting pt, boiling pt, and density 55) Which element is a liquid at 500K? a) B b) Li c) Cr d) Fe 56) 50.0 grams of which metallic element occupies a volume of 16.7 cm3? a) Li b) Na c) Sc d) Hg 57) Which element has the greatest atomic radius? a) C b) N c) Si d) P

Table T Table T contains every formula you will need to use on the Regents exam