Stoichiometry - MolesAvacado
... The text I chose is Chemistry: Connections to Our Changing World, 2002, written by LeMay, Beall, Robblee, and Brower, and published by Prentice Hall. When studying any area of science there are common terms that texts often use. To help understand and distinguish between the terms, I have prepared d ...
... The text I chose is Chemistry: Connections to Our Changing World, 2002, written by LeMay, Beall, Robblee, and Brower, and published by Prentice Hall. When studying any area of science there are common terms that texts often use. To help understand and distinguish between the terms, I have prepared d ...
Semester 1 Study Guide – Chemistry
... 17. The water molecule is a polar molecule. True or false? ____________________ 18. When a molecule has a center of positive charge and a center of negative charge, it is said to be a polar molecule. True or false? ...
... 17. The water molecule is a polar molecule. True or false? ____________________ 18. When a molecule has a center of positive charge and a center of negative charge, it is said to be a polar molecule. True or false? ...
examples of chemical and physical reactions.
... called _______________. The substances that are present at the end of the reaction are called the _____________. Example: If we take a paper, the reactant is the paper. If we burn the paper the reaction is burning. At the end of the reaction i.e. when the paper completely burns, the product is ash. ...
... called _______________. The substances that are present at the end of the reaction are called the _____________. Example: If we take a paper, the reactant is the paper. If we burn the paper the reaction is burning. At the end of the reaction i.e. when the paper completely burns, the product is ash. ...
Review for Exam 1
... Determine how many of each ion type is needed for an overall charge of zero. When the cation and anion have different charges, use the ion charges to determine the number of ions of each needed. ...
... Determine how many of each ion type is needed for an overall charge of zero. When the cation and anion have different charges, use the ion charges to determine the number of ions of each needed. ...
Document
... 1. Write the reaction. NixCyOy -> X Ni + Y CO 2. Use conservation of mass to find the mass of CO. 97.4 mg (mass tot) – 33.5 mg (mass Ni) = 63.9 g (mass CO) 3. Find the number of moles of CO and of Ni. CO : 63.9 mg / (12.0+16.0 g/mol) = 2.28 mmol Ni : 33.5 mg / 58.7 g / mol) = 0.57 mmol 4. Find the r ...
... 1. Write the reaction. NixCyOy -> X Ni + Y CO 2. Use conservation of mass to find the mass of CO. 97.4 mg (mass tot) – 33.5 mg (mass Ni) = 63.9 g (mass CO) 3. Find the number of moles of CO and of Ni. CO : 63.9 mg / (12.0+16.0 g/mol) = 2.28 mmol Ni : 33.5 mg / 58.7 g / mol) = 0.57 mmol 4. Find the r ...
UNIT 1—Water AB
... a) If you have 36.0 grams of Sodium Bromide and an excess of chlorine, what mass of Br 2 can be produced? 3. Refer to the following reaction: Aluminum reacts with Hydrochloric Acid to produce Aluminum Chloride and Hydrogen Gas. a) Write the balanced chemical equation for this reaction. b) If you rea ...
... a) If you have 36.0 grams of Sodium Bromide and an excess of chlorine, what mass of Br 2 can be produced? 3. Refer to the following reaction: Aluminum reacts with Hydrochloric Acid to produce Aluminum Chloride and Hydrogen Gas. a) Write the balanced chemical equation for this reaction. b) If you rea ...
Section 1 The Nature of Chemical Reactions
... Mg + O2 → 2MgO This equation gives you two magnesium atoms on the right and only one on the left. So you need to double the amount of magnesium on the left, ...
... Mg + O2 → 2MgO This equation gives you two magnesium atoms on the right and only one on the left. So you need to double the amount of magnesium on the left, ...
BAT
... Name: ___________________________________________ Date: ____________________ Period: ___ The final will be comprehensive, covering chapters 1-18, with the focus on chapters 10 – 18. The following questions will be what you have to Be Able To do for the final. Complete the following questions. Where ...
... Name: ___________________________________________ Date: ____________________ Period: ___ The final will be comprehensive, covering chapters 1-18, with the focus on chapters 10 – 18. The following questions will be what you have to Be Able To do for the final. Complete the following questions. Where ...
MCQ plus answers
... Your answer as recorded on the sheet will be used in the event of any ambiguity. There is only one correct choice for each question. Negative marks will not be awarded for any question. ...
... Your answer as recorded on the sheet will be used in the event of any ambiguity. There is only one correct choice for each question. Negative marks will not be awarded for any question. ...
Chemistry is a material science
... change. Substances undergoing a physical change may have an alter state of matter or changed shape, but never a change in ___________ of the matter itself. When H2O(l) as a liquid freezes it is H2O(s) as a solid, but there is no change is the fixed ________ of H:O in H2O. This indicates there is not ...
... change. Substances undergoing a physical change may have an alter state of matter or changed shape, but never a change in ___________ of the matter itself. When H2O(l) as a liquid freezes it is H2O(s) as a solid, but there is no change is the fixed ________ of H:O in H2O. This indicates there is not ...
ENVE3503 – Environmental Engineering Expectations for Chapter 2
... 2. Understand how mass/mass concentration units are applied in assessing contaminant levels in biota and sediments. 3. Be able to perform mass/mass calculations, e.g. a. Problems 2.22 and 2.23 b. Mercury levels in Lake Erie walleye averaged 0.3 ppm in 1977. Express this in an appropriate mass/mass f ...
... 2. Understand how mass/mass concentration units are applied in assessing contaminant levels in biota and sediments. 3. Be able to perform mass/mass calculations, e.g. a. Problems 2.22 and 2.23 b. Mercury levels in Lake Erie walleye averaged 0.3 ppm in 1977. Express this in an appropriate mass/mass f ...
Chemical Equations
... • To represent chemical equations correctly, equations must be balanced. • The number of atoms on both sides of the equation must be the same • Law of conservation of mass – the total mass of the reactants in a chemical reaction is equal to the total mass of the products. • Atoms are not created or ...
... • To represent chemical equations correctly, equations must be balanced. • The number of atoms on both sides of the equation must be the same • Law of conservation of mass – the total mass of the reactants in a chemical reaction is equal to the total mass of the products. • Atoms are not created or ...
Slide 1
... IUPAC names for a carboxylic acid are derived from the name of the parent hydrocarbon. – The final -e is dropped from the name of the parent hydrocarbon – The suffix -oic is added followed by the word acid. Many organic acids are called by their common (trivial) names which are derived from Greek or ...
... IUPAC names for a carboxylic acid are derived from the name of the parent hydrocarbon. – The final -e is dropped from the name of the parent hydrocarbon – The suffix -oic is added followed by the word acid. Many organic acids are called by their common (trivial) names which are derived from Greek or ...
atomic number
... each compound will switch. The reaction will be double replacement. – The product will be two new compounds. ...
... each compound will switch. The reaction will be double replacement. – The product will be two new compounds. ...
Chemical Reactions (Part One)
... a nuisance, but other reactions can even be dangerous. The reaction between iron and oxygen causes the metal to become rusty, which weakens the structure and makes it dangerous to use. Factories sometimes produce waste gases that pollute the atmosphere. These gases cause acid rain and might contribu ...
... a nuisance, but other reactions can even be dangerous. The reaction between iron and oxygen causes the metal to become rusty, which weakens the structure and makes it dangerous to use. Factories sometimes produce waste gases that pollute the atmosphere. These gases cause acid rain and might contribu ...
600 $600
... B. It will raise the freezing point. C. It will not affect the freezing point. D. Water will not be able to freeze. What is A, lower the freezing point. ...
... B. It will raise the freezing point. C. It will not affect the freezing point. D. Water will not be able to freeze. What is A, lower the freezing point. ...
2. Chemistry of Living Things Outline
... Each chemical reaction that occurs in a living thing is controlled by an _________. Enzymes are large, complex _____________ molecules that control the _______ of chemical reactions. Enzymes are the ____________ catalysts in cellular chemical reactions. In chemistry, a ____________ is something that ...
... Each chemical reaction that occurs in a living thing is controlled by an _________. Enzymes are large, complex _____________ molecules that control the _______ of chemical reactions. Enzymes are the ____________ catalysts in cellular chemical reactions. In chemistry, a ____________ is something that ...
Chemistry of Living Things Outline
... In chemistry, a ____________ is something that _________ up or ________ down a chemical reaction. Catalysts are neither permanently ____________ nor __________ by the reaction they catalyze. In organisms, _____________ allow the chemical reactions of ______________ to take place more efficien ...
... In chemistry, a ____________ is something that _________ up or ________ down a chemical reaction. Catalysts are neither permanently ____________ nor __________ by the reaction they catalyze. In organisms, _____________ allow the chemical reactions of ______________ to take place more efficien ...
Complete ionic equation
... of oxygen, 2 moles of aluminum oxide are produced. III. For every 4 grams of aluminum that react with 3 grams of oxygen, 2 grams of aluminum oxide are produced. ...
... of oxygen, 2 moles of aluminum oxide are produced. III. For every 4 grams of aluminum that react with 3 grams of oxygen, 2 grams of aluminum oxide are produced. ...
NSCC Chem 121 chapter5
... CHEMICAL EQUATIONS • Chemical equations are a convenient way to represent chemical reactions. Chemical equations are written in terms of reactants and products. • A symbol is written in parentheses to the right of each reactant and product to indicate the state or form in which the substance exists ...
... CHEMICAL EQUATIONS • Chemical equations are a convenient way to represent chemical reactions. Chemical equations are written in terms of reactants and products. • A symbol is written in parentheses to the right of each reactant and product to indicate the state or form in which the substance exists ...
Calculating the Empirical Formula from Mass % Elemental
... A 30.5-g sample of acrylic acid, used in the manufacture of acrylic plastics, is found to contain 15.25 g C, 1.71 g H, and 13.54 g O. In a separate mass spectrometer experiment, the acrylic acid is found to have a molar mass of approximately 72 g/mol. What are the empirical and molecular formulas of ...
... A 30.5-g sample of acrylic acid, used in the manufacture of acrylic plastics, is found to contain 15.25 g C, 1.71 g H, and 13.54 g O. In a separate mass spectrometer experiment, the acrylic acid is found to have a molar mass of approximately 72 g/mol. What are the empirical and molecular formulas of ...
STUDY GUIDE
... 11.1 Describing Chemical Reactions 34. Identify the reactants and products in each ...
... 11.1 Describing Chemical Reactions 34. Identify the reactants and products in each ...
Stoichiometry
Stoichiometry /ˌstɔɪkiˈɒmɨtri/ is the calculation of relative quantities of reactants and products in chemical reactions.Stoichiometry is founded on the law of conservation of mass where the total mass of the reactants equals the total mass of the products leading to the insight that the relations among quantities of reactants and products typically form a ratio of positive integers. This means that if the amounts of the separate reactants are known, then the amount of the product can be calculated. Conversely, if one reactant has a known quantity and the quantity of product can be empirically determined, then the amount of the other reactants can also be calculated.As seen in the image to the right, where the balanced equation is:CH4 + 2 O2 → CO2 + 2 H2O.Here, one molecule of methane reacts with two molecules of oxygen gas to yield one molecule of carbon dioxide and two molecules of water. Stoichiometry measures these quantitative relationships, and is used to determine the amount of products/reactants that are produced/needed in a given reaction. Describing the quantitative relationships among substances as they participate in chemical reactions is known as reaction stoichiometry. In the example above, reaction stoichiometry measures the relationship between the methane and oxygen as they react to form carbon dioxide and water.Because of the well known relationship of moles to atomic weights, the ratios that are arrived at by stoichiometry can be used to determine quantities by weight in a reaction described by a balanced equation. This is called composition stoichiometry.Gas stoichiometry deals with reactions involving gases, where the gases are at a known temperature, pressure, and volume and can be assumed to be ideal gases. For gases, the volume ratio is ideally the same by the ideal gas law, but the mass ratio of a single reaction has to be calculated from the molecular masses of the reactants and products. In practice, due to the existence of isotopes, molar masses are used instead when calculating the mass ratio.