Chem Review

March 25, 2018 | Author: coolio86 | Category: Chemical Elements, Carbon, Mole (Unit), Chemical Substances, Chemical Reactions


Comments



Description

FINAL EXAM REVIEWCHM 1032 *SI Leader: Darneisha Print & bring toDecember 4/29/15, 6pm 6th review session Sunday, ,2015 4pm-6pm Room: Garden Key in SU 1. Provide the name, symbol number of electrons, mass number, and atomic number of an isotope that contains 10 protons and 11 neutrons (respectively). a) Fluorine, F, 9, 19, 9 b) Neon, Ne, 10, 21, 10 c) Fluorine, F, 10, 18, 9 d) None of the above 2. Determine whether each change is physical or chemical. (a)  A copper wire is hammered flat (b)  A nickel dissolves in acid to form a green solution (c)  Dry ice sublimes (d)  a match ignites when struck on a flint 3. Calculate the molecular mass for calcium nitrate a) 164.09 g/mol b) 142.16 g/mol c) 164.086 g/mol d) 102.082 g/mol 4. How many significant figures are in each of the following numbers? (a) 554km (b) 7 pennies (c) 1.01 x 10^15 (d) 0.00099 s 5. Classify each substance as a pure substance or mixture. If it is a pure substance, classify it as a element or compound. If it is a mixture, classify it as homogeneous or heterogeneous. (a) Wine (b) Beef stew (c) Iron (d) Carbon monoxide 6. What is true of isotope elements? a)Elements have the same number of protons b) Elements have the same number of neutrons c) The elements are the same, just have a different mass. d) A and C e) None of the above 7% d)100% 11. Identify the Bronsted -Lowry acid.3 x 10^15 moles of H2 are reacted with acetylene.0 mL at an unknown pressure. and 159 g of Al2O3 are calculated as the product. to form ethane (C2H6). A gas has an initial volume of 39.8 x 10^-4 a) 7. If the previous reaction is carried in the laboratory.2 mol of Fe2O3.7.9 L b) [OH-] = 1.6 x 10^15 mol 9. In an experiment carried out at a very low pressure. be if the pressure drops to 12. what was conjugate base.022 x 10^23 mol b) 6. A gas bubble forms inside a vat containing a hot liquid.5 torr + b) 4990H2torr SO4(aq) + H2O(l) ——> HSO4 (aq) + H3O (aq) c) 1750 torr d) 9490 torr 12. 1. on the surface of a catalyst. If the sample occupies 514 11. If 3. what will its each solution and tell it is acidic or volume basic.5 x 10^14 mol c) 1.6ofatm with a volume of whether 5.the initial pressure? a) 17.3% b) 91. C2H2. how many moles of acetylene are consumed? a) 6.4 moles of Al is combined with 6.7 L b) 6. the conjugate acid mL atand 720the torr. What would be the balanced equation for this reaction? a) 2H2 +C2H2 ——> C2H6 b) H2 + C2H2 ——> C2H4 c) H2 + 2C2H2 ——-> C4H6 d) 2H2 + 2C2H2 ——> C4H8 8.3 x 10^15 mol d) 2.8 L.2 atm and the temperature drops to 304K? + a) [H3O ] = 1. 1. If the bubble is originally at 341K and aCalculate pressurethe ofpH 1. Based on the balanced equation of the previous problem.3 x10^-2 . what is the percent yield? a) 50.9% c) 80. which is the limiting reagent? 2Al + Fe2O3 ——> Al2O3 + 2Fe a) Al b) Fe2O3 c) Fe d) Al2O3 10. the Bronsted-Lowry base. c) 5.5 KJ N2(g) + O2(g) ——> 2NO(g) a) 20.1 L d) 3.37. Write the short electronic configuration for the Fe atom a) [Kr] 4s2 3d9 b) [Ar] 4s2 3d6 c) [Ar] 3d8 d) [Ne] 3s2 3p6 4s2 3d6 14.Calculate A metaltheradiator is made fromfor 26.0 °C? a) 19300 kJ b) 346 kJ c) 0. much heat must be supplied to the H3O+ Concentration a solution with aHow pH of 15.2 g 15.0 kg of iron.346 kJ d) 193 kJ 16.7 g d) 41.9 L 13.6 g b) 87. radiator to raise the temperature from 25.3 g c) 43. Which halogen has the smallest London force? a) I2 b) Cl2 c) Br2 d) F2 .0 °C to 55. what mass of NO must have been produced? ΔH° = 180. 8. If 124 kJ of heat is absorbed in a reaction that forma nitric oxide from nitrogen and oxygen. What mass of KBr do you need to make 250. tetrahedral b) Trigonal planar. Ionic bonding a) I and II b) I. trigonal pyramidal 19.17. III c) IV d) I 20. Predict the electron and molecular and molecular geometry to ammonia. London Dispersion forces II.5 g b) 375 g . What is the name of the compound? 21. trigonal pyramidal d) Bent. Hydrogen Bonding IV. Write a formula for the compound formed between aluminum and nitrogen. Dipole-Dipole III. How many valence electrons does ammonium have? a) 9 b) 7 c) 6 d) 8 18. NH3 (respectively). In the previous problem. Write the formula for each compound: (a) Silver Nitrate (b) Iron (II) Phosphate (c) Chlorous Acid 22. what intermolecular forces are present? I. bent c) Tetrahedral.0 mL of a 150 M KBr Solution? a) 37. a) Trigonal pyramidal. II. 332 kg of water. to obtain a volume of 6.00 L c) 0.120 mol 27.30* a) 0.46 kg 5) 4.0885 mol d) 1. How many valence electrons are present in sulfur hexaflouride? a) 48 b) 13 c) 43 d) 18 24.225 mol c) 3.00 M NaOH solution? a) 0.2 g of He and 25.c) 4. Name each compound: (a) Ba(OH)2 (b) HNO2 (c) SnO (d) Ca(ClO4)2 25. and the volume of its 4Na(s) + O2 (g) ——> 28.4 g sucrose in 0.200 L of a 15. What is NOT true about sulfur dioxide? a) Contains polar bonds b) Is a non polar molecule c) Has a trigonal planar electron geometry d) Has a bent molecular geometry 28.00793 M 26 A c) 4.46 g 23. will happen to the 2Na pressure of a gas if the temperature is doubled. Themixture final volume of thepressure solution is *Molar mass of sucrose = 342. mixture. the and total of355 the mL. What 2 O(s) is quadrupled? The container following reaction is an example of a a) The pressure will double a) Gas evolution reaction b) Acid-Base reaction . 4.0443sample M d) I’m just trying week. How many additional moles of 0.5-L scuba diving tank contains a helium-Oxygen mixture made up of 24.0 M NaOH solution to obtain 3.200 b) 1. A 12. To what volume should you dilute 0.225 mol of helium.5 mL d) 0. temperature and pressure are constant.314 molL a) 0.32 g of O2 at 298K Calculate the mole fraction and partial pressure of each component in Find the Molarity of a solution prepared by dissolving 50.00 L b) 0.48L? Assume the helium gas musttowesurvive add tofinals the sample 26.65-L of helium gas contains 0.415 M b) 0. b) The pressure will quadruple c) No reaction occurs c) The pressure will not beReaction affected d) Oxidation-Reduction d) The pressure will decrease by half. Arrange the following colors of visible light.green. 29. Consider the following precipitation reaction occurring in an aqueous solution: 3 SrCl2 (aq) + 2 Li3PO4 (aq) ———> Sr3(PO4)2 (s) + 6 LiCl (aq) Write the complete ionic equation and net ionic equation for this reaction.in order of increasing: (a) Wavelength: (b) Frequency: 30. . and blue. red.
Copyright © 2024 DOKUMEN.SITE Inc.