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LESSON 2: Bar None • 831 Reasoning about equations and determining solutions with bar models provides a visual representation of the structure of the equations. A bar model uses rectangular bars to represent known and unknown quantities. Reasoning About Addition Equations ACTIVITY 2.1 WORKED EXAMPLE Consider the addition equation x 1 10 515 .
- Bar None 2
LESSON 2: Bar None • 829A MATERIALS None Lesson Overview...
- Bar None 2
LESSON 2: Bar None • 829A MATERIALS None Lesson Overview Students use bar models to solve a variety of one-step addition equations. They analyze Worked Examples and solution strategies to develop an understanding of using bar models to solve addition equations. The term inverse operations is defined. Students use properties
Throughout this course, you have used a variety of tools to solve mathematical problems, including area models, pictures, tables, tape diagrams, double number lines, graphs, and expressions.
LESSON 2: Bar None. Write a definition for each term in your own words. one-step equation. solution. inverse operations. Remember. hat makes the equation true. To solve a one-step addition equation, perform inverse operations to both sides of the equ. Practice. Use a bar model to solve each equation. 1. x 1 7 5 15 . 3. 14.5 5 6 1 y.
28 Μαΐ 2020 · Calculate the number of moles and the mass of the solute in each of the following solutions: (a) 2.00 L of 18.5 M H 2 SO 4, concentrated sulfuric acid. (b) 100.0 mL of 3.8 × 10 −5 M NaCN, the minimum lethal concentration of sodium cyanide in blood serum.
17. Phase equilibrium and solutions. Answers to worked examples. Using a phase diagram (on p. 772 in Chemistry3) The normal melting and boiling points for methanol (CH3OH) are 175.7 K and 337.8 K, respectively. The critical temperature and pressure are 512.8 K and 81 bar.
Solutions: 1.Yes, A= B. We will prove this by showing that A Band B A. We begin by showing that A B. Let a2A, then we know that a= 2k for some integer k.
