www.XtremePapers.com UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Ordinary Level 5070/03
... You should show the essential steps in any calculations and record experimental results in the spaces provided on the question paper. At the end of the examination, fasten all your work securely together. The number of marks is given in brackets [ ] at the end of each question or part question. ...
... You should show the essential steps in any calculations and record experimental results in the spaces provided on the question paper. At the end of the examination, fasten all your work securely together. The number of marks is given in brackets [ ] at the end of each question or part question. ...
File
... Analyze We are told that isopropyl alcohol contains C, H, and O atoms and are given the quantities of CO2 and H2O produced when a given quantity of the alcohol is combusted. We must determine the empirical formula for isopropyl alcohol, a task that requires us to calculate the number of moles of C, ...
... Analyze We are told that isopropyl alcohol contains C, H, and O atoms and are given the quantities of CO2 and H2O produced when a given quantity of the alcohol is combusted. We must determine the empirical formula for isopropyl alcohol, a task that requires us to calculate the number of moles of C, ...
The Mole - Cloudfront.net
... Note that the NUMBER is always the same, but the MASS is very different! Mole is abbreviated mol (gee, that’s a lot quicker to write, huh?) ...
... Note that the NUMBER is always the same, but the MASS is very different! Mole is abbreviated mol (gee, that’s a lot quicker to write, huh?) ...
Stoichiometry Objectives
... Identify and calculate the number of representative particles in each of the following quantities. 1. 2.15 moles of gold 2. 0.151 mole of nitrogen oxide 3. 11.5 moles of potassium bromide Calculate the number of moles of the substance that contains the following number of representative particles. 4 ...
... Identify and calculate the number of representative particles in each of the following quantities. 1. 2.15 moles of gold 2. 0.151 mole of nitrogen oxide 3. 11.5 moles of potassium bromide Calculate the number of moles of the substance that contains the following number of representative particles. 4 ...
Sec 4.1 Notes
... Step 1: Solve one of the equations for one of its variables. Step 2: Substitute the expression for the variable found in Step 1 into the other equation. Step 3: Find the value of one variable by solving the equation from Step 2. Step 4: Find the value of the other variable by substituting the value ...
... Step 1: Solve one of the equations for one of its variables. Step 2: Substitute the expression for the variable found in Step 1 into the other equation. Step 3: Find the value of one variable by solving the equation from Step 2. Step 4: Find the value of the other variable by substituting the value ...
2-1 Solving One-Step Equations
... the solutions of an equation is also called solving the equation. ...
... the solutions of an equation is also called solving the equation. ...
MC84 - Southchemistry.com
... 35. The addition of an oxidizing agent such as chlorine water to a clear solution of an unknown compound results in the appearance of a brown color. When this solution is shaken with the organic solvent, methylene dichloride, the organic solvent layer turns purple. The unknown compound probably cont ...
... 35. The addition of an oxidizing agent such as chlorine water to a clear solution of an unknown compound results in the appearance of a brown color. When this solution is shaken with the organic solvent, methylene dichloride, the organic solvent layer turns purple. The unknown compound probably cont ...
Redox
... The sum of the oxidation numbers of all the atoms in an uncharged molecule is zero: in an ion, the sum is equal to the charge on the ion. TOPIC 12.7:REDOX REACTIONS ...
... The sum of the oxidation numbers of all the atoms in an uncharged molecule is zero: in an ion, the sum is equal to the charge on the ion. TOPIC 12.7:REDOX REACTIONS ...
Chapter 04
... Assign the oxidation numbers to the elements in the compound KMnO4. Step 1: Start with the oxidation numbers you know: ...
... Assign the oxidation numbers to the elements in the compound KMnO4. Step 1: Start with the oxidation numbers you know: ...
Chemical Equilibrium
... • It is important to note that Ksp cannot be used for soluble substances. • It is also sensitive to changes in solution temperature ...
... • It is important to note that Ksp cannot be used for soluble substances. • It is also sensitive to changes in solution temperature ...
covalent - Typepad
... Identify the letter of the choice that best completes the statement or answers the question. 1. In the compound sodium fluoride, NaF, the sodium atom loses one electron and the fluorine atom gains one electron to form ions that are isoelectric with a. helium. c. neon. b. oxygen. d. calcium. 2. Atoms ...
... Identify the letter of the choice that best completes the statement or answers the question. 1. In the compound sodium fluoride, NaF, the sodium atom loses one electron and the fluorine atom gains one electron to form ions that are isoelectric with a. helium. c. neon. b. oxygen. d. calcium. 2. Atoms ...
The computational-Type Problems 1 Solving Linear Diophantine
... example, to solve 6x ≡ 8 (mod 10), notice that gcd(6, 10) = 2, then by dividing 2 on both sides, we get 3x ≡ 4 (mod 5). In other words, to solve 6x ≡ 8 (mod 10), we can instead to solve 3x ≡ 4 (mod 5). Note that now gcd(3, 5)=1, so we can used the above ”naive” method above. Note that the solution ...
... example, to solve 6x ≡ 8 (mod 10), notice that gcd(6, 10) = 2, then by dividing 2 on both sides, we get 3x ≡ 4 (mod 5). In other words, to solve 6x ≡ 8 (mod 10), we can instead to solve 3x ≡ 4 (mod 5). Note that now gcd(3, 5)=1, so we can used the above ”naive” method above. Note that the solution ...
Read each question. Then fill in the correct answer on the answer
... Standardized Test Practice - Cumulative, Chapter 5 Record your answers on a sheet of paper. Show your work. 16. The volume of a rectangular prism is 864 cubic centimeters. The length is 1 centimeter less than the height, and the width is 3 centimeters more than the height. a. Write a polynomial equa ...
... Standardized Test Practice - Cumulative, Chapter 5 Record your answers on a sheet of paper. Show your work. 16. The volume of a rectangular prism is 864 cubic centimeters. The length is 1 centimeter less than the height, and the width is 3 centimeters more than the height. a. Write a polynomial equa ...
Stoichiometry: Calculations with Chemical Formulas and Equations
... Routine analysis: CHN analysis ...
... Routine analysis: CHN analysis ...
Chapter 2
... The Atomic Theory of Matter Dalton’s Theory of Matter: 1. Each element is composed of extremely small particles call atoms. 2. All atoms of a given element are identical; atoms of different elements are different. 3. Atoms of an element are not changed into different types of atoms by a chemical re ...
... The Atomic Theory of Matter Dalton’s Theory of Matter: 1. Each element is composed of extremely small particles call atoms. 2. All atoms of a given element are identical; atoms of different elements are different. 3. Atoms of an element are not changed into different types of atoms by a chemical re ...
intermediate chemistry may 2011 marking scheme
... point of magnesium is much higher than that of sodium. Both are metals and have mobile electrons in a delocalized state which can conduct current. (2) For Mg, each atom contributes 2 electrons to the electron sea not 1 as for Na and hence the bonding between metal ion and electron sea is greater (3) ...
... point of magnesium is much higher than that of sodium. Both are metals and have mobile electrons in a delocalized state which can conduct current. (2) For Mg, each atom contributes 2 electrons to the electron sea not 1 as for Na and hence the bonding between metal ion and electron sea is greater (3) ...
