Stoichiometry Study guides, Class notes & Summaries

Chapter 4 Stoichiometry of Chemical Reactions

Experiment 9: Ideal Gas Law and Gas Stoichiometry Questions with Complete Solutions

CH120 - chemical reactions, stoichiometry and chemical reactions

Stoichiometry (Gizmo) Questions and Answers Already Passed 1. A student tried to solve the following problem by selecting the tile as shown. What, if anything, did the student do wrong? B. The student chose the correct tile, but needs to flip the tile to make the units cancel 2. Based on the tiles, shown, how many moles of oxygen gas (O2) are needed to produce 36.04 grams of water (H2O) when reacting with access ethane in the equation: 2C2H6 + 7O2 —> 5CO2 + 6H2O? C. 2.3 moles of oxygen (O...

Stoichiometry Gizmo - answer key Stoichiometry Gizmo - answer key Stoichiometry Gizmo - answer key

1. Balance these chemical reactions: (2 point each, 8 points total) 2. Calculate the formula mass of Al2(SO4)3. (2 points) 3. Calculate the mass of 2.5 moles of NaOH. (1 points) 4. For the balanced chemical equation: Answer the following questions: a. If you produce 7 mols of KBr, how many mols of MgBr2 did you need? (1 point) b. If I have 2 moles of MgBr2, how much KBr can I make in moles? (2 points) 5. You are making 100 ml of a 2 M solution of HCl. How many ml of a 4 M HCl solution will y...

Vocabulary: Avogadro’s number, balanced equation, cancel, coefficient, conversion factor, dimensional analysis, molar mass, mole, molecular mass, stoichiometry Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. A 250 mL glass of orange juice contains 22 grams of sugar. How much sugar is in a two-liter (2,000 mL) bottle of orange juice? _176 grams 2. It requires two sticks of butter to make a batch of 20 cookies. How much butter will it take to make 150 cooki...

Unit 2 Chemical Reactions & Stoichiometry

Chemical Reactions and Stoichiometry

Gizmos Student Exploration Stoichiometry Answers Key. Calculate: The molecular mass of a molecule is the sum of the masses of each atom in the molecule. The unit of molecular mass is the universal mass unit (u). Iron’s atomic mass is 55.85 u, carbon’s mass is 12.01 u, and oxygen’s mass is 16.00 u. A. Calculate the molecular mass of carbon monoxide (CO) by adding the atomic mass of carbon and the atomic mass of oxygen: ______28.01g____________________ B. Calculate the molecular mass of...