Honors Chemistry Final Exam Study Guide Multiple Choice- (51 points @ 1/2 point ea.) Identify the letter of the choice that best completes the statement or answers the question. ____ 1. The pair of elements that forms a bond with the least ionic character is |a. |Na and Cl. |c. |O and Cl. | |b. |K and Cl. |d. |Mg and Cl.
Premium Atom Chemical bond Electron
are in a post 1982 penny? - (2.496 x 0.975) = 2.43 g of Zinc (2.496 x 0.025) = 0.062 g of Copper 4. How many moles of copper and zinc are in post 1982 pennies? (2.43 g Zn x 1 mol Zn) / 63.38 g Zn = 0.037 mol Zn (0.062 g Cu x 1 mol Cu) / 63.54 g Cu = 0.00097 mol Cu 5. Write a balanced reaction of zinc with HCl. - Zn (s) + 2HCl (aq) ZnCl2 (aq) + H2 (g) 6. How many moles of HCl are needed to react completely with all of the zinc in a post 1982 penny? (2.43 g Zn x 1 mol) / 65.38 g Zn = 0
Premium Chemistry Chemical reaction Concentration
JEET SCIENCE ACADEMY CHOWK AZAM (LAYYAH) TIME 2.5 Hr CHEMISTRY 1st YEAR CH # 1‚2‚9‚10 Marks: 85 G.Super . 1 Name…………………………………………...... Objective ROLL NO. ………………………………. Q.NO.1. Encircle the correct answer? (1×17=17) 1. Atoms of which one of the follelement have independent existance: (A) Flourine (B) Krypton (C ) Oxygen (D) Nitrogen 2.18g glucose is dissolved
Premium Electrochemistry Hydrogen Vitamin C
metal ions from aqueous solutions. The biosorption studies were conducted in batch adsorption system as a function of contact time and initial metal ion concentration. The adsorption system attained equilibrium after 150 min of contact time for Pb (II)‚ Cu (II)‚ Zn (II) and Cd (II). The removal efficiency of red alga improved as metal ions concentrations were lowered. The equilibrium sorption data was better explained by Langmuir isotherm model suggesting that the adsorption of metal cations observed
Premium Adsorption
dissolve. In this experiment a simulated water sample from Clark Fork‚ or portion of the Columbia River in Montana‚ will be analyzed to determine the presence and levels of IA and IIA metal ions as well as the concentrations of Cu 2+ and Fe 3+ ions (Na+‚ K+‚ Ca++‚ Ba++‚ Sr++‚ Cu++‚ and Fe+++). We will be using the techniques
Premium Water Water pollution Chemical element
forms a basic oxide with the formula XO and a hydride with the formula XH2. The hydride reacts with water to give hydrogen gas. The element X could be? A. K B. Ca C. N D. O 4. Which metal reacts with concentrated NaOH to produce hydrogen gas? A. Al B. Cu C. Fe D. MG 5. In which pair does the named element have the same oxidation number? A. Sulfur in H2S2O7 and H2SO4 B. Mercury in Hg2+ and Hg22+ C. Oxygen in Na2O2 and H2O D. Cobalt in Co(NH3)62+ and Co(NO3)2
Premium Oxygen Chemistry Water
Executive Summary There were multiple issues weighing heavily on the mind Wally‚ a VP at Sports Obermeyer‚ in November of 1992. Sports Obermeyer‚ a successful manufacturer of ski apparel was having trouble planning the manufacturing levels of its various skiwear items for 1993-94 based on whatever scant information it had on the end customers’ likes and dislikes. Waiting to make these decisions till after the Las Vegas trade show‚ the one event which would give reliable retailer feedback‚ would
Premium Hong Kong Forecasting Standard deviation
Name: Serene Tan Subject: Chemistry SL Date: 5th December 2012 Title: The effect of concentration of electrolyte on the potential difference in voltaic cell. Aim: To investigate the effect of concentration of electrolyte of the potential difference in voltaic cell. Introduction: Chemical reactions involving the transfer of electrons from one reactant to another are called oxidation-reduction reactions or redox reactions. In a redox reaction‚ two half-reactions occur; one reactant gives
Premium Electrochemistry Zinc
ColdH2O | HotH2O | LitmusTest | DiluteHCl | DiluteNaOH | Mg | Silver | Odorless | Slight change of color and expansion | No Reaction | Substance became buoyant‚ gas produced | No Reaction | Gas and heat produced‚ substance dissolved | No Reaction | Cu | Copper | Odorless | Added Sheen | No Reaction | No Reaction | No Reaction | No Reaction | No Reaction | Zn | Metallic Silver | Odorless | No Reaction | No Reaction | No Reaction | No Reaction | Substance dulled‚ gas produced | No Reaction | MgO
Premium Chemistry Chemical reaction Sodium
at 210.5 inches overall (216.5 inches‚ wagon) on a 118.0-inch wheelbase‚ it’s smaller than the Polara and Matador‚ but larger than the new‚ compact Lancer (188.8 inches on a 106.5-inch wheelbase). Engine options are 318 and 361-cu-in V-8s and the famed 30-degree‚ 225-cu-in slant six.1962: Dodge and Plymouth downsize their full-size lines. Chrysler blames Virgil Exner for the way these cars turned out‚ and uses it as an excuse to fire its design chief. The ’62 Dart is 202.0 inches long on a 116.0-inch
Premium