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1. Choose 3 of the following five practices. Explain each one more fully from either a science or an engineering perspective (or both). There should be a full paragraph for each practice you choose so there should be three paragraphs total.
a. Developing and Using Models
b. Analyzing and Interpreting Data
c. Constructing Explanations and Designing Solutions
d. Engaging in Argument from Evidence
e. Obtaining, Evaluating, and Communication Information
(These 5 practices are those least likely to be included in science teaching.)
A 0.411-g sample of potassium hydrogen phthalate, KHC8H4O4 (molar mass=204.44 g/mol) is dissolved with 50 mL of deionized water in a 125 mL Erlenmeyer flask.
Formic acid (HCOOH) is secreted by ants. Calculate [H3O+] for a 7.40E-3 M aqueous solution of formic acid (Ka = 1.80E-4).
A cleaning solution is found to have a [OH-] = 3.2 x 10-12M. What is the [H3O+] and is the solution acidic or basic?
Starting with 2 different samples of propyne, show how you can make 2-methyl-pent-3-yn-2-ol (condensed formula (CH3)2C(OH)C=CCH3 ). In other words, you can convert propyne into a nucleophile, and convert propyne into an electrophile, and react the..
Question- Calculate the theoretical yield of 4-acetamidobenzensulfonamide from 2.7g of acetanilide and 8.0ml of CISO3H
Bromine reacts with aluminum iodide. If 6.35x10^21 molecules of iodide are produced , how many grams of aluminum iodide is reacted. need help writing out the equation.
Explain how many grams of copper will be plated out by a current of 2.3 A applied for 25 minutes to a 0.50 M solution of copper(II) sulfate
Compare your predicted Cl-C-Cl bond angle and the program model predicted Cl-C-Cl bond angle in C2Cl4 with the actual Cl-C-Cl bond angle in C2Cl4. Are they the same. Explain any differences based on electron repulsion and sizes of atoms and electr..
Question- The voltaic cell described by the balanced chemical equation has a standard cell potential of 0.12 V. Calculate the value (kJ) for the standard free energy change of the cell. Round your answer to three significant figures.
The half-equivalence of a titration occurs half way to the end point, where half of the analyte has reacted to form its conjugate, and the other half still remains unreacted.
Draw the mechanism, including formal charges on the N's, of the first step of the synthesis where anthranilic acid is converted to the anthranyl diazonium chloride intermediate
Tincture of iodine is I2 dissolved in ethanol, C2H5OH. A 1% solution of tincture of iodine is 10.0g of solute for 1000. g of solution. How many grams of solvent are present in 1000. g of this solution? How many moles of solute are in 10.0g of I2? ..
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