Stoichiometry • Calculations involving quantities of consumed reactants and formed products based on a BALANCED chemical equation. Mass Molar Mass Mole Coeff Bal Eqn Mole Molar Mass Mass Example 2 • The Haber Process involves reacting gaseous nitrogen and gaseous hydrogen to form ammonia. Determine the mass in grams of hydrogen gas required to form 1.00 x 103 g ammonia. Your Turn 2 • If you react 52.9 g of potassium chlorate (KClO3) with excess phosphorus
Premium Chemical reaction Stoichiometry Hydrogen
Q. 1. During the electrolysis of molten lead bromide‚ which of the following takes place : A : Bromine is released at the cathode. B: Lead is deposited at the anode. C : Bromine ions gain electrons. D: Lead is deposited at the cathode. Ans : - D. Q. 2. Here is an electrode reaction : Cu → Cu2+ + 2e-. [i.e. Cu- 2e- →Cu2+]. At which electrode(anode or cathode) would such a reaction take place. Is this an example of oxidation or reduction. Ans : - At anode. Oxidation. Q. 3. A solution contains
Premium Electrochemistry Electrolyte Electrolysis
Isotopes and average atomic mass Isotope: element variations with different atomic mass but same atomic number Isotopic Abundance: the relative amount in which each isotope of an element Calculating: given 2 isotopes of an element [B: 10.01u] [B: 11.01u] 1) Given average atomic mass: 10.81u If given percentages‚ you can find average atomic mass by adding each portion 2) Set variables for unknown values Let x represent % abundance for 10/5 B Let 1-x represent % abundance for 11/5 B Calculate:
Premium Chemical element Neutron Atomic number
1. (a) The diagram below represents the industrial fractional distillation of crude oil. (i) Identify fraction A. (ii) What property of the fractions allows them to be separated in the column? (2) (b) A gas oil fraction from the distillation of crude oil contains hydrocarbons in the C15 to C19 range. These hydrocarbons can be cracked by strong heating. (i) Write the molecular formula for the alkane with 19 carbon atoms. (ii) Name the type of reaction involved in cracking. (iii) Write
Premium Petroleum Gasoline Internal combustion engine
Scuba diving is a form of underwater diving in which a diver uses a scuba set to breathe underwater. According to the Professional Association of Diving Instructor (PADI)‚ a “DEEP DIVE” is considered to be anything from 18 meters (60 ft) to 30 meters (100 ft). A scuba diver moves around underwater by using swim-fins attached to the feet‚ however external propulsion can be provided by a diver propulsion vehicle. Scuba diving may be performed for a number of reasons; either for recreational purposes
Premium Scuba diving Underwater diving
FINAL SUMMATIVE PRESENTATIONS This evaluation will involve working in groups of 3 to prepare a written report‚ poster and a demonstration of food preparation of your chosen topic. PART A: WRITTEN REPORT This should give the reader background information on your selected topic. This information will be shared with the class as an ongoing commentary in addition to your demonstration. The report will be typed using proper report format with a title page and subheadings. It should
Premium Demonstration Report Cooking
Keghan Chapter 8 MULTIPLE CHOICE QUESTIONS Topic: Structure Elucidation 1. An alkene adds hydrogen in the presence of a catalyst to give 3‚4-dimethylhexane. Ozonolysis of the alkene followed by treatment with zinc and acetic acid gives a single organic product. The structure of the alkene is: CH3 A) CH3CH=C-CHCH2CH3 (cis or trans) CH3 CH3 B) CH3CH2C=CCH3 (cis or trans) CH2CH3 C) CH3 CH2=CCH2CHCH2CH3 CH3 CH2 D) CH3CH2CCHCH2CH3 CH3 CH3 E) CH3CH2CHCHCH=CH2
Premium Chlorine Hydrogen Hydrochloric acid
Environmental Engineering Course Description: Ecological framework of sustainable development; pollution environments: water‚ air‚ and solid; waste treatment processes‚ disposal‚ and management; government legislation‚ rules and regulation related to the environment and waste management; and environmental management s...ystem. Pre requisite: General Chemistry Course outline: 1 Ecological Concepts 1.1 Introduction to Environmental Engineering 1.2 Ecology of life 1.3 Biogeochemichal
Premium Ecology Environment Environmental science
Chemistry 101 General Chemistry Fall 2013 –Syllabus S. Bakshandeh Office Hours: MW‚ 12:00–12:35 pm & T; 1:40-2:15 pm Room 92032 and/or Lab 92011. Email: sbakshandeh@yahoo.com – The best way to reach me is by email. Please indicate your full name and section number in the “Subject/Re” box. I will not open emails without proper identification. Blurb: Welcome to your first course in college chemistry. In this course‚ we will be exploring laws‚ theories‚ and principles of chemistry as related
Premium Chemistry Molecule Atom
CHEM 105 Chemistry in the Human Environment CRN 80464 Fall 2013 General Description CHEM 105 Chemistry in the Human Environment is a onesemester non-mathematical course for liberal arts and non-science majors‚ which fulfills G.E. requirements in physical sciences. The course stresses a humanistic approach to chemistry‚ introducing concepts via important social and environmental contexts. Students need not have any previous exposure to chemistry. Access Requirements No campus visits are required
Premium Chemistry Website Natural environment