Solution
... Nuclear chemistry is used to treat some forms of disease. For example, thyroid diseases can be treated using iodine-131 (I-131). Once absorbed, the radioisotope decays emitting beta particles that destroy the surrounding tissue. a) Write the nuclear equation for this decay. ...
... Nuclear chemistry is used to treat some forms of disease. For example, thyroid diseases can be treated using iodine-131 (I-131). Once absorbed, the radioisotope decays emitting beta particles that destroy the surrounding tissue. a) Write the nuclear equation for this decay. ...
bonding notes for votech
... atom or bonded group of atoms that have a + or – charge because valence e- have been lost or gained ...
... atom or bonded group of atoms that have a + or – charge because valence e- have been lost or gained ...
1 Chemistry 222
... acid is the same as the NaOH, we expect equivalence points to occur at 20, 40, and 60 mL of titrant added. From our pKa values, we can estimate the pH at the first two equivalence points because the primary species that are present are the amphiprotic forms. Midway to each equivalence point, pH is d ...
... acid is the same as the NaOH, we expect equivalence points to occur at 20, 40, and 60 mL of titrant added. From our pKa values, we can estimate the pH at the first two equivalence points because the primary species that are present are the amphiprotic forms. Midway to each equivalence point, pH is d ...
KEY Final Exam Review - Iowa State University
... NO3¯ ---> NO 2) balance each half-reaction: 8H2S ---> S8 + 16H+ + 16e¯ 3e¯ + 4H+ + NO3¯ ---> NO + 2H2O 3) Make the number of electrons equal: 24H2S ---> 3S8 + 48H+ + 48e¯ <--- multiplied by a factor of 3 48e¯ + 64H+ + 16NO3¯ ---> 16NO + 32H2O <--- multiplied by a factor of 16 Note that 16 and 3 have ...
... NO3¯ ---> NO 2) balance each half-reaction: 8H2S ---> S8 + 16H+ + 16e¯ 3e¯ + 4H+ + NO3¯ ---> NO + 2H2O 3) Make the number of electrons equal: 24H2S ---> 3S8 + 48H+ + 48e¯ <--- multiplied by a factor of 3 48e¯ + 64H+ + 16NO3¯ ---> 16NO + 32H2O <--- multiplied by a factor of 16 Note that 16 and 3 have ...
Chemistry1100 Practice Exam 4 Choose the best answer for
... 11. A compound has an empirical formula CH2- An independent analysis gave a value of 70 for its molar mass. What is the correct molecular formula? a. C2H4 b. C3H6 c. C4O8 d. C5H10 e. C5H11 12. Given the balanced chemical equation, C4H4 + 5 O2 → 4 CO2 + 2 H2O. If 0.3618 moles of C4H4 are allowed to ...
... 11. A compound has an empirical formula CH2- An independent analysis gave a value of 70 for its molar mass. What is the correct molecular formula? a. C2H4 b. C3H6 c. C4O8 d. C5H10 e. C5H11 12. Given the balanced chemical equation, C4H4 + 5 O2 → 4 CO2 + 2 H2O. If 0.3618 moles of C4H4 are allowed to ...
IPC Semester Exam Review – Chemistry Topics
... 4. Investigating the properties of silicon. After reading cooking instructions that said to add salt to water before boiling it, Jose guessed that adding salt must make the water boil at a higher temperature. He decided to test his idea by performing the following experiment. Jose measured out 1 qua ...
... 4. Investigating the properties of silicon. After reading cooking instructions that said to add salt to water before boiling it, Jose guessed that adding salt must make the water boil at a higher temperature. He decided to test his idea by performing the following experiment. Jose measured out 1 qua ...
Chemistry
... will not affect the boiling point of a liquid. 13. ____________________________________________ is the difference in temperature between the boiling points of a pure solvent and a solution. 14. ______________________________________________ is the difference in temperature between the freezing point ...
... will not affect the boiling point of a liquid. 13. ____________________________________________ is the difference in temperature between the boiling points of a pure solvent and a solution. 14. ______________________________________________ is the difference in temperature between the freezing point ...
File
... It’s time to practice what you have already learned about moles, chemical reactions and dimensional analysis. We will learn one new conversion factor and then combine it with other concepts. Molar Volume is the volume of one mole of gas. Since the space between molecules in a gas is very great compa ...
... It’s time to practice what you have already learned about moles, chemical reactions and dimensional analysis. We will learn one new conversion factor and then combine it with other concepts. Molar Volume is the volume of one mole of gas. Since the space between molecules in a gas is very great compa ...
File - Varsity Field
... chromate (CrO42-) except alkali metals & NH4+ • Metal sulphides (S2-), except alkali metals • Most metal hydroxides and oxides, except alkali metals, ammonium & Ba(OH)2 e.g. Ca(OH)2 is poorly soluble. From +/- 5 g into 100 mL water, only 0.17 g dissolves @ 10 oC. • Ca(OH)2 (s) ...
... chromate (CrO42-) except alkali metals & NH4+ • Metal sulphides (S2-), except alkali metals • Most metal hydroxides and oxides, except alkali metals, ammonium & Ba(OH)2 e.g. Ca(OH)2 is poorly soluble. From +/- 5 g into 100 mL water, only 0.17 g dissolves @ 10 oC. • Ca(OH)2 (s) ...
Chemistry 106 – Homework Assignment #1
... 12. It is not generally known that the Lone Ranger studied chemistry in his student days. Accordingly, when he suspected that someone was tampering with his silver bullets and may have replaced them with some other metal, the Lone Ranger was able to check them for himself. First, the Masked Man rem ...
... 12. It is not generally known that the Lone Ranger studied chemistry in his student days. Accordingly, when he suspected that someone was tampering with his silver bullets and may have replaced them with some other metal, the Lone Ranger was able to check them for himself. First, the Masked Man rem ...
Formulas of Compounds
... There are additional rules if the compound is binary, ternary or higher or takes the form of acids, bases or salts. Writing formulas 1. Now we can use names and formulas of cations and anions to write formulas of compounds. 2. In these formulas, the sum of the total cation and anion charges must be ...
... There are additional rules if the compound is binary, ternary or higher or takes the form of acids, bases or salts. Writing formulas 1. Now we can use names and formulas of cations and anions to write formulas of compounds. 2. In these formulas, the sum of the total cation and anion charges must be ...
Chemical Equations
... Most chemical equations give the physical states of the reactants and products: ...
... Most chemical equations give the physical states of the reactants and products: ...
Journal - neutralization
... Grade 10 Academic Science (SNC 2D1) Chemistry - Journal Assignment The Uses of Neutralization Introduction ...
... Grade 10 Academic Science (SNC 2D1) Chemistry - Journal Assignment The Uses of Neutralization Introduction ...
Using mass to calculate molecular formula
... Check that the number of atoms of each type is correct and that the masses are conserved. If 3.4 g of methane are burnt in excess oxygen, what mass of carbon dioxide is formed. 13.4 g of CH4 is 13.4/16 = 0.837 mol of CH4 Equation shows that 1 mol CH4 produces 1 mol CO2, therefore 0.837 mol CO2, mass ...
... Check that the number of atoms of each type is correct and that the masses are conserved. If 3.4 g of methane are burnt in excess oxygen, what mass of carbon dioxide is formed. 13.4 g of CH4 is 13.4/16 = 0.837 mol of CH4 Equation shows that 1 mol CH4 produces 1 mol CO2, therefore 0.837 mol CO2, mass ...
the ap chemistry summer assignment
... studying and practicing for every hour in class. I think this is an underestimation of what is necessary to be successful. Like most AP classes, AP Chemistry comes with a summer assignment. It is due the first Friday of school and will count as your first quiz grade. We will have a test over the con ...
... studying and practicing for every hour in class. I think this is an underestimation of what is necessary to be successful. Like most AP classes, AP Chemistry comes with a summer assignment. It is due the first Friday of school and will count as your first quiz grade. We will have a test over the con ...
Chemistry 2nd Semester Final Review
... 1. If a gas occupies 3.8 L at a pressure of 2.71 atm, what would the pressure be if the volume changes to 1.47 L? (Temp. and amt. of gas constant) 2. A gas has a volume of 1.49 L at a temperature of 34.75 °C. What would the volume be at 78.41 °C? (pressure & amt. of gas constant) 3. What volume is o ...
... 1. If a gas occupies 3.8 L at a pressure of 2.71 atm, what would the pressure be if the volume changes to 1.47 L? (Temp. and amt. of gas constant) 2. A gas has a volume of 1.49 L at a temperature of 34.75 °C. What would the volume be at 78.41 °C? (pressure & amt. of gas constant) 3. What volume is o ...
Unit 8: Equilibrium Content Outline: Shifting Equilibrium and Le
... C. The principle states “If a system, at equilibrium, is subjected to a “stress”, the equilibrium will shift in the direction that tends to relieve the stress on the system. D. When a stress is applied the Reaction Quotient (Q), does not equal the Equilibrium Constant (K). 1. If K < Q, the reverse r ...
... C. The principle states “If a system, at equilibrium, is subjected to a “stress”, the equilibrium will shift in the direction that tends to relieve the stress on the system. D. When a stress is applied the Reaction Quotient (Q), does not equal the Equilibrium Constant (K). 1. If K < Q, the reverse r ...
CHE 145-381 – TEST #2 SPRING 2009 CHAPTERS 6, 7, 8 NAME
... b. how many moles of each element are in 1 mole of K2S2O3? Write your answers in the form of conversion factors. ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________ ...
... b. how many moles of each element are in 1 mole of K2S2O3? Write your answers in the form of conversion factors. ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________ ...
Chapter 1 - TamAPChemistryHart
... a pair of electrons from N to B to form a covalent bond. • Transition-metal ions are generally Lewis acids. • Lewis acids must have a vacant orbital (into which the electron pairs can be donated). • Compounds with multiple bonds can act as Lewis acids. • For example, consider the reaction: H2O(l) + ...
... a pair of electrons from N to B to form a covalent bond. • Transition-metal ions are generally Lewis acids. • Lewis acids must have a vacant orbital (into which the electron pairs can be donated). • Compounds with multiple bonds can act as Lewis acids. • For example, consider the reaction: H2O(l) + ...
Spring 2014 Chemistry Review
... 99) In the solvation of gases, solubility rates increase with (high / low) temperatures and (high / low) pressure. 100) Agitation of a solution will (increase / decrease) the dissolving rate of a solid; whereas it will (increase / decrease) the dissolving rate of a gas. 101) Adding a solute to a sol ...
... 99) In the solvation of gases, solubility rates increase with (high / low) temperatures and (high / low) pressure. 100) Agitation of a solution will (increase / decrease) the dissolving rate of a solid; whereas it will (increase / decrease) the dissolving rate of a gas. 101) Adding a solute to a sol ...
PH
In chemistry, pH (/piːˈeɪtʃ/) is a numeric scale used to specify the acidity or alkalinity of an aqueous solution. It is the negative of the logarithm to base 10 of the activity of the hydrogen ion. Solutions with a pH less than 7 are acidic and solutions with a pH greater than 7 are alkaline or basic. Pure water is neutral, being neither an acid nor a base. Contrary to popular belief, the pH value can be less than 0 or greater than 14 for very strong acids and bases respectively.pH measurements are important in medicine, biology, chemistry, agriculture, forestry, food science, environmental science, oceanography, civil engineering, chemical engineering, nutrition, water treatment & water purification, and many other applications. The pH scale is traceable to a set of standard solutions whose pH is established by international agreement.Primary pH standard values are determined using a concentration cell with transference, by measuring the potential difference between a hydrogen electrode and a standard electrode such as the silver chloride electrode.The pH of aqueous solutions can be measured with a glass electrode and a pH meter, or indicator.pH is the negative of the logarithm to base 10 of the activity of the (solvated) hydronium ion, more often (albeit somewhat inaccurately) expressed as the measure of the hydronium ion concentration.The rest of this article uses the technically correct word ""base"" and its inflections in place of ""alkaline"", which specifically refers to a base dissolved in water, and its inflections.